CoReg.py 61 KB
Newer Older
1
2
3
4
5
6
7
8
9
# -*- coding: utf-8 -*-
__author__='Daniel Scheffler'

import os
import re
import shutil
import subprocess
import time
import warnings
10
from copy import copy
11
12

# custom
13
14
15
16
try:
    import gdal
except ImportError:
    from osgeo import gdal
17
import numpy as np
18
19
20
try:
    import pyfftw
except ImportError:
21
    pyfftw = None
22
from shapely.geometry import Point, Polygon
23
24

# internal modules
25
from .DeShifter import DESHIFTER, _dict_rspAlg_rsp_Int
26
27
28
29
30
31
from .          import geometry  as GEO
from .          import io        as IO
from .          import plotting  as PLT

from py_tools_ds.ptds                      import GeoArray
from py_tools_ds.ptds.geo.coord_calc       import corner_coord_to_minmax, get_corner_coordinates
32
from py_tools_ds.ptds.geo.vector.topology  import get_overlap_polygon, get_smallest_boxImYX_that_contains_boxMapYX
33
from py_tools_ds.ptds.geo.projection       import prj_equal, get_proj4info
34
35
from py_tools_ds.ptds.geo.vector.geometry  import boxObj, round_shapelyPoly_coords
from py_tools_ds.ptds.geo.coord_grid       import move_shapelyPoly_to_image_grid
36
from py_tools_ds.ptds.geo.coord_trafo      import pixelToMapYX, reproject_shapelyGeometry
37
38
39
40
41
42
43
44
45
46
47
from py_tools_ds.ptds.geo.raster.reproject import warp_ndarray
from py_tools_ds.ptds.geo.map_info         import geotransform2mapinfo
from py_tools_ds.ptds.numeric.vector       import find_nearest





class imParamObj(object):
    def __init__(self, CoReg_params, imID):
        assert imID in ['ref', 'shift']
Daniel Scheffler's avatar
CoReg:    
Daniel Scheffler committed
48

49
        self.imName = 'reference image' if imID == 'ref' else 'image to be shifted'
50
51
        self.v = CoReg_params['v']
        self.q = CoReg_params['q'] if not self.v else False
52
53

        # set GeoArray
54
        get_geoArr    = lambda p: GeoArray(p) if not isinstance(p,GeoArray) else p
55
        self.GeoArray = get_geoArr(CoReg_params['im_ref']) if imID == 'ref' else get_geoArr(CoReg_params['im_tgt'])
56
57
58
59
        init_nodata   = CoReg_params['nodata'][0 if imID == 'ref' else 1]
        self.GeoArray.nodata   = init_nodata if init_nodata is not None else self.GeoArray.nodata
        self.GeoArray.progress = CoReg_params['progress']
        self.GeoArray.q        = CoReg_params['q']
60
61
62
63
64
65
66

        # set title to be used in plots
        self.title = os.path.basename(self.GeoArray.filePath) if self.GeoArray.filePath else self.imName

        # set params
        self.prj   = self.GeoArray.projection
        self.gt    = self.GeoArray.geotransform
Daniel Scheffler's avatar
CoReg:    
Daniel Scheffler committed
67
68
69
70
71
        self.xgsd  = self.GeoArray.xgsd
        self.ygsd  = self.GeoArray.ygsd
        self.rows  = self.GeoArray.rows
        self.cols  = self.GeoArray.cols
        self.bands = self.GeoArray.bands
72
73
74
75
76
77
78

        # validate params
        assert self.prj, 'The %s has no projection.' % self.imName
        assert not re.search('LOCAL_CS', self.prj), 'The %s is not georeferenced.' % self.imName
        assert self.gt, 'The %s has no map information.' % self.imName

        # set band4match
79
80
        self.band4match = (CoReg_params['r_b4match'] if imID == 'ref' else CoReg_params['s_b4match'])-1
        assert self.bands >= self.band4match+1 >= 1, "The %s has %s %s. So its band number to match must be %s%s." \
81
82
83
84
            % (self.imName, self.bands, 'bands' if self.bands > 1 else 'band', 'between 1 and '
                if self.bands > 1 else '', self.bands)

        # set nodata
Daniel Scheffler's avatar
CoReg:    
Daniel Scheffler committed
85
        if CoReg_params['nodata'][0 if imID == 'ref' else 1] is not None:
86
            self.nodata = CoReg_params['nodata'][0 if imID == 'ref' else 1]
Daniel Scheffler's avatar
CoReg:    
Daniel Scheffler committed
87
        else:
88
            self.nodata = self.GeoArray.nodata
89

90
91
92
93
94
95
96
97
98
99
100
101
        # set footprint_poly
        given_footprint_poly = CoReg_params['footprint_poly_%s' % ('ref' if imID == 'ref' else 'tgt')]
        given_corner_coord   = CoReg_params['data_corners_%s'   % ('ref' if imID == 'ref' else 'tgt')]

        if given_footprint_poly:
            self.GeoArray.footprint_poly = given_footprint_poly
        elif given_corner_coord is not None:
            self.GeoArray.footprint_poly = Polygon(given_corner_coord)
        elif not CoReg_params['calc_corners']:
            # use the image extent
            self.GeoArray.footprint_poly = Polygon(get_corner_coordinates(gt=self.GeoArray.geotransform,
                                                                          cols=self.cols,rows=self.rows))
102
        else:
103
104
105
106
            # footprint_poly is calculated automatically by GeoArray
            if not CoReg_params['q']:
                print('Calculating actual data corner coordinates for %s...' % self.imName)
            self.GeoArray.calc_mask_nodata(fromBand=self.band4match)  # this avoids that all bands have to be read
107

108
        self.poly = self.GeoArray.footprint_poly  # returns a shapely geometry
109

110
111
        if not CoReg_params['q']:
            print('Bounding box of calculated footprint for %s:\n\t%s' % (self.imName, self.poly.bounds))
112

113
114
115


class COREG(object):
116
117
    """See help(COREG) for documentation!"""

118
119
    def __init__(self, im_ref, im_tgt, path_out=None, fmt_out='ENVI', r_b4match=1, s_b4match=1, wp=(None,None),
                 ws=(512, 512), max_iter=5, max_shift=5, align_grids=False, match_gsd=False, out_gsd=None,
120
121
                 resamp_alg_deshift='cubic', resamp_alg_calc='cubic', footprint_poly_ref=None, footprint_poly_tgt=None,
                 data_corners_ref=None, data_corners_tgt=None,
122
                 nodata=(None,None), calc_corners=True, multiproc=True, binary_ws=True, force_quadratic_win=True,
123
                 progress=True, v=False, path_verbose_out=None, q=False, ignore_errors=False):
124
125
126
127

        """Detects and corrects global X/Y shifts between a target and refernce image. Geometric shifts are calculated
        at a specific (adjustable) image position. Correction performs a global shifting in X- or Y direction.

128
129
130
131
        :param im_ref(str, GeoArray):   source path (any GDAL compatible image format is supported) or GeoArray instance
                                        of reference image
        :param im_tgt(str, GeoArray):   source path (any GDAL compatible image format is supported) or GeoArray instance
                                        of image to be shifted
132
        :param path_out(str):           target path of the coregistered image
133
134
135
136
                                            - if None (default), the method correct_shifts() does not write to disk
                                            - if 'auto': /dir/of/im1/<im1>__shifted_to__<im0>.bsq
        :param fmt_out(str):            raster file format for output file. ignored if path_out is None. can be any GDAL
                                        compatible raster file format (e.g. 'ENVI', 'GeoTIFF'; default: ENVI)
137
138
139
140
141
142
143
144
145
146
147
        :param r_b4match(int):          band of reference image to be used for matching (starts with 1; default: 1)
        :param s_b4match(int):          band of shift image to be used for matching (starts with 1; default: 1)
        :param wp(tuple):               custom matching window position as map values in the same projection like the
                                        reference image (default: central position of image overlap)
        :param ws(tuple):               custom matching window size [pixels] (default: (512,512))
        :param max_iter(int):           maximum number of iterations for matching (default: 5)
        :param max_shift(int):          maximum shift distance in reference image pixel units (default: 5 px)
        :param align_grids(bool):       align the coordinate grids of the image to be and the reference image (default: 0)
        :param match_gsd(bool):         match the output pixel size to pixel size of the reference image (default: 0)
        :param out_gsd(tuple):          xgsd ygsd: set the output pixel size in map units
                                        (default: original pixel size of the image to be shifted)
148
149
150
151
152
153
154
155
156
        :param resamp_alg_deshift(str)  the resampling algorithm to be used for shift correction (if neccessary)
                                        valid algorithms: nearest, bilinear, cubic, cubic_spline, lanczos, average, mode,
                                                          max, min, med, q1, q3
                                        default: cubic
        :param resamp_alg_calc(str)     the resampling algorithm to be used for all warping processes during calculation
                                        of spatial shifts
                                        (valid algorithms: nearest, bilinear, cubic, cubic_spline, lanczos, average, mode,
                                                       max, min, med, q1, q3)
                                        default: cubic (highly recommended)
157
158
159
160
        :param footprint_poly_ref(str):
        :param footprint_poly_tgt(str):
        :param data_corners_ref(list):  map coordinates of data corners within reference image
        :param data_corners_tgt(list):  map coordinates of data corners within image to be shifted
161
162
163
164
165
166
167
        :param nodata(tuple):           no data values for reference image and image to be shifted
        :param calc_corners(bool):      calculate true positions of the dataset corners in order to get a useful
                                        matching window position within the actual image overlap
                                        (default: 1; deactivated if '-cor0' and '-cor1' are given
        :param multiproc(bool):         enable multiprocessing (default: 1)
        :param binary_ws(bool):         use binary X/Y dimensions for the matching window (default: 1)
        :param force_quadratic_win(bool):   force a quadratic matching window (default: 1)
168
        :param progress(bool):          show progress bars (default: True)
169
        :param v(bool):                 verbose mode (default: False)
170
171
        :param path_verbose_out(str):   an optional output directory for intermediate results
                                        (if not given, no intermediate results are written to disk)
172
173
        :param q(bool):                 quiet mode (default: False)
        :param ignore_errors(bool):     Useful for batch processing. (default: False)
174
175
176
177
178
179
180
181
                                        In case of error COREG.success == False and COREG.x_shift_px/COREG.y_shift_px
                                        is None
        """

        self.params              = dict([x for x in locals().items() if x[0] != "self"])

        if match_gsd and out_gsd: warnings.warn("'-out_gsd' is ignored because '-match_gsd' is set.\n")
        if out_gsd:  assert isinstance(out_gsd, list) and len(out_gsd) == 2, 'out_gsd must be a list with two values.'
182
183
184
185
        if data_corners_ref and not isinstance(data_corners_ref[0], list): # group if not [[x,y],[x,y]..] but [x,y,x,y,]
            data_corners_ref = [data_corners_ref[i:i + 2] for i in range(0, len(data_corners_ref), 2)]
        if data_corners_tgt and not isinstance(data_corners_tgt[0], list): # group if not [[x,y],[x,y]..]
            data_corners_tgt = [data_corners_tgt[i:i + 2] for i in range(0, len(data_corners_tgt), 2)]
186
187
        if nodata: assert isinstance(nodata, tuple) and len(nodata) == 2, "'nodata' must be a tuple with two values." \
                                                                          "Got %s with length %s." %(type(nodata),len(nodata))
188
        for rspAlg in [resamp_alg_deshift, resamp_alg_calc]:
189
            assert rspAlg in _dict_rspAlg_rsp_Int.keys(), "'%s' is not a supported resampling algorithm." % rspAlg
190
191
192
193
        if resamp_alg_calc=='average':
            warnings.warn("The resampling algorithm 'average' causes sinus-shaped patterns in fft images that will "
                          "affect the precision of the calculated spatial shifts! It is highly recommended to"
                          "choose another resampling algorithm")
194
195

        self.path_out            = path_out            # updated by self.set_outpathes
196
        self.fmt_out             = fmt_out
197
198
199
200
201
202
203
        self.win_pos_XY          = wp                  # updated by self.get_opt_winpos_winsize()
        self.win_size_XY         = ws                  # updated by self.get_opt_winpos_winsize()
        self.max_iter            = max_iter
        self.max_shift           = max_shift
        self.align_grids         = align_grids
        self.match_gsd           = match_gsd
        self.out_gsd             = out_gsd
204
205
        self.rspAlg_DS           = resamp_alg_deshift
        self.rspAlg_calc         = resamp_alg_calc
206
207
208
209
210
211
        self.calc_corners        = calc_corners
        self.mp                  = multiproc
        self.bin_ws              = binary_ws
        self.force_quadratic_win = force_quadratic_win
        self.v                   = v
        self.path_verbose_out    = path_verbose_out
212
213
214
        self.q                   = q if not v else False # overridden by v
        self.progress            = progress if not q else False  # overridden by q

215
216
217
218
219
220
221
222
223
224
225
226
227
        self.ignErr              = ignore_errors
        self.max_win_sz_changes  = 3                   # TODO: änderung der window size, falls nach max_iter kein valider match gefunden
        self.ref                 = None                # set by self.get_image_params
        self.shift               = None                # set by self.get_image_params
        self.matchWin            = None                # set by self.get_clip_window_properties()
        self.otherWin            = None                # set by self.get_clip_window_properties()
        self.imfft_gsd           = None                # set by self.get_clip_window_properties()
        self.fftw_win_size_YX    = None                # set by calc_shifted_cross_power_spectrum

        self.x_shift_px          = None                # always in shift image units (image coords) # set by calculate_spatial_shifts()
        self.y_shift_px          = None                # always in shift image units (image coords) # set by calculate_spatial_shifts()
        self.x_shift_map         = None                # set by self.get_updated_map_info()
        self.y_shift_map         = None                # set by self.get_updated_map_info()
228
229
        self.vec_length_map      = None
        self.vec_angle_deg       = None
230
231
232
        self.updated_map_info    = None                # set by self.get_updated_map_info()

        self.tracked_errors      = []                  # expanded each time an error occurs
233
        self.success             = None                # default
234
        self.deshift_results     = None                # set by self.correct_shifts()
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259

        gdal.AllRegister()
        self._get_image_params()
        self._set_outpathes(im_ref, im_tgt)
        self.grid2use                 = 'ref' if self.shift.xgsd <= self.ref.xgsd else 'shift'
        if self.v: print('resolutions: ', self.ref.xgsd, self.shift.xgsd)

        overlap_tmp                   = get_overlap_polygon(self.ref.poly, self.shift.poly, self.v)
        self.overlap_poly             = overlap_tmp['overlap poly'] # has to be in reference projection
        assert self.overlap_poly, 'The input images have no spatial overlap.'
        self.overlap_percentage       = overlap_tmp['overlap percentage']
        self.overlap_area             = overlap_tmp['overlap area']

        if self.v and self.path_verbose_out:
            IO.write_shp(os.path.join(self.path_verbose_out, 'poly_imref.shp'),    self.ref.poly,     self.ref.prj)
            IO.write_shp(os.path.join(self.path_verbose_out, 'poly_im2shift.shp'), self.shift.poly,   self.shift.prj)
            IO.write_shp(os.path.join(self.path_verbose_out, 'overlap_poly.shp'),  self.overlap_poly, self.ref.prj)

        ### FIXME: transform_mapPt1_to_mapPt2(im2shift_center_map, ds_imref.GetProjection(), ds_im2shift.GetProjection()) # später basteln für den fall, dass projektionen nicht gleich sind

        # get_clip_window_properties
        self._get_opt_winpos_winsize()
        if not self.q: print('Matching window position (X,Y): %s/%s' % (self.win_pos_XY[0], self.win_pos_XY[1]))
        self._get_clip_window_properties()

260
        if self.v and self.path_verbose_out and self.matchWin.mapPoly and self.success is not False:
261
262
263
            IO.write_shp(os.path.join(self.path_verbose_out, 'poly_matchWin.shp'),
                         self.matchWin.mapPoly, self.matchWin.prj)

264
        self.success     = False if self.success is False or not self.matchWin.boxMapYX else None
265
        self._coreg_info = None # private attribute to be filled by self.coreg_info property
266
267
268
269
270
271
272
273
274


    def _set_outpathes(self, im_ref, im_tgt):
        get_baseN = lambda path: os.path.splitext(os.path.basename(path))[0]

        # get input pathes
        path_im_ref = im_ref.filePath if isinstance(im_ref, GeoArray) else im_ref
        path_im_tgt = im_tgt.filePath if isinstance(im_tgt, GeoArray) else im_tgt

275
276
277
278
279
280
        if self.path_out: # this also applies to self.path_out='auto'

            if self.path_out == 'auto':
                dir_out, fName_out = os.path.dirname(path_im_tgt), ''
            else:
                dir_out, fName_out = os.path.split(path_im_tgt)
281
282
283
284
285
286
287
288
289
290
291
292
293
294

            if dir_out and fName_out:
                # a valid output path is given => do nothing
                pass

            else:
                # automatically create an output directory and filename if not given
                if not dir_out:
                    if not path_im_ref:
                        dir_out = os.path.abspath(os.path.curdir)
                    else:
                        dir_out = os.path.dirname(path_im_ref)

                if not fName_out:
295
296
297
298
299
                    ext         = 'bsq' if self.fmt_out=='ENVI' else \
                                    gdal.GetDriverByName(self.fmt_out).GetMetadataItem(gdal.DMD_EXTENSION)
                    fName_out   = fName_out if not fName_out in ['.',''] else '%s__shifted_to__%s' \
                                    %(get_baseN(path_im_tgt), get_baseN(path_im_ref))
                    fName_out   = fName_out+'.%s'%ext if ext else fName_out
300

301
                self.path_out   = os.path.abspath(os.path.join(dir_out,fName_out))
302
303
304
305

                assert ' ' not in self.path_out, \
                    "The path of the output image contains whitespaces. This is not supported by GDAL."
        else:
306
            # this only happens if COREG is not instanced from within Python and self.path_out is explicitly set to None
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
            # => DESHIFTER will return an array
            pass

        if self.v:
            if self.path_verbose_out:
                dir_out, dirname_out = os.path.split(self.path_verbose_out)

                if not dir_out:
                    if self.path_out:
                        self.path_verbose_out = os.path.dirname(self.path_out)
                    else:
                        self.path_verbose_out = os.path.abspath(os.path.join(os.path.curdir,
                            'CoReg_verboseOut__%s__shifted_to__%s' % (get_baseN(path_im_tgt), get_baseN(path_im_ref))))
                elif dirname_out and not dir_out:
                    self.path_verbose_out = os.path.abspath(os.path.join(os.path.curdir, dirname_out))

                assert ' ' not in self.path_verbose_out, \
                    "'path_verbose_out' contains whitespaces. This is not supported by GDAL."

        else:
            self.path_verbose_out = None

        if self.path_verbose_out and not os.path.isdir(self.path_verbose_out): os.makedirs(self.path_verbose_out)


    def _get_image_params(self):
        self.ref   = imParamObj(self.params,'ref')
        self.shift = imParamObj(self.params,'shift')
        assert prj_equal(self.ref.prj, self.shift.prj), \
336
337
            'Input projections are not equal. Different projections are currently not supported. Got %s / %s.'\
            %(get_proj4info(proj=self.ref.prj), get_proj4info(proj=self.shift.prj))
338
339


340
341
342
343
344
345
346
347
348
    def show_image_footprints(self):
        """This method is intended to be called from Jupyter Notebook and shows a web map containing the calculated
        footprints of the input images as well as the corresponding overlap area."""
        # TODO different colors for polygons
        assert self.overlap_poly, 'Please calculate the overlap polygon first.'

        try:
            import folium, geojson
        except ImportError:
349
350
            folium, geojson = None, None
        if not folium or not geojson:
351
352
353
            raise ImportError("This method requires the libraries 'folium' and 'geojson'. They can be installed with "
                              "the shell command 'pip install folium geojson'.")

354
355
356
        refPoly      = reproject_shapelyGeometry(self.ref  .poly      , self.ref  .GeoArray.epsg, 4326)
        shiftPoly    = reproject_shapelyGeometry(self.shift.poly      , self.shift.GeoArray.epsg, 4326)
        overlapPoly  = reproject_shapelyGeometry(self.overlap_poly    , self.shift.GeoArray.epsg, 4326)
357
358
359
360
361
362
363
364
365
        matchWinPoly = reproject_shapelyGeometry(self.matchWin.mapPoly, self.shift.GeoArray.epsg, 4326)

        m = folium.Map(location=tuple(np.array(overlapPoly.centroid.coords.xy).flatten())[::-1])
        for poly in [refPoly, shiftPoly, overlapPoly, matchWinPoly]:
            gjs = geojson.Feature(geometry=poly, properties={})
            folium.GeoJson(gjs).add_to(m)
        return m


366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
    def _get_opt_winpos_winsize(self):
        # type: (tuple,tuple) -> tuple,tuple
        """Calculates optimal window position and size in reference image units according to DGM, cloud_mask and
        trueCornerLonLat."""
        # dummy algorithm: get center position of overlap instead of searching ideal window position in whole overlap
        # TODO automatischer Algorithmus zur Bestimmung der optimalen Window Position

        wp = tuple(self.win_pos_XY)
        assert type(self.win_pos_XY) in [tuple,list,np.ndarray],\
            'The window position must be a tuple of two elements. Got %s with %s elements.' %(type(wp),len(wp))
        wp = tuple(wp)

        if None in wp:
            overlap_center_pos_x, overlap_center_pos_y = self.overlap_poly.centroid.coords.xy
            wp = (wp[0] if wp[0] else overlap_center_pos_x[0]), (wp[1] if wp[1] else overlap_center_pos_y[0])

382
        # validate window position
383
384
        assert self.overlap_poly.contains(Point(wp)), 'The provided window position %s/%s is outside of the overlap ' \
                                                      'area of the two input images. Check the coordinates.' %wp
385
386
387
388
389
390
391
392
393
        #for im in [self.ref, self.shift]:
        #    imX, imY = mapXY2imXY(wp, im.gt)
            #if self.ignErr:
            #    if  im.GeoArray[int(imY), int(imX), im.band4match]!=im.nodata:
            #        self.success = False
            #else:
        #    assert im.GeoArray[int(imY), int(imX), im.band4match]!=im.nodata,\
        #        'The provided window position is within the nodata area of the %s. Check the coordinates.' %im.imName

394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
        self.win_pos_XY  = wp
        self.win_size_XY = (int(self.win_size_XY[0]), int(self.win_size_XY[1])) if self.win_size_XY else (512,512)


    def _get_clip_window_properties(self):
        """Calculate all properties of the matching window and the other window. These windows are used to read the
        corresponding image positions in the reference and the target image.
        hint: Even if X- and Y-dimension of the target window is equal, the output window can be NOT quadratic!
        """
        # FIXME image sizes like 10000*256 are still possible

        wpX,wpY             = self.win_pos_XY
        wsX,wsY             = self.win_size_XY
        ref_wsX, ref_wsY    = (wsX*self.ref.xgsd  , wsY*self.ref.ygsd)   # image units -> map units
        shift_wsX,shift_wsY = (wsX*self.shift.xgsd, wsY*self.shift.ygsd) # image units -> map units
        ref_box_kwargs      = {'wp':(wpX,wpY),'ws':(ref_wsX,ref_wsY)    ,'gt':self.ref.gt  }
        shift_box_kwargs    = {'wp':(wpX,wpY),'ws':(shift_wsX,shift_wsY),'gt':self.shift.gt}
        matchWin            = boxObj(**ref_box_kwargs)   if self.grid2use=='ref' else boxObj(**shift_box_kwargs)
        otherWin            = boxObj(**shift_box_kwargs) if self.grid2use=='ref' else boxObj(**ref_box_kwargs)
        overlapWin          = boxObj(mapPoly=self.overlap_poly,gt=self.ref.gt)

        # clip matching window to overlap area
        matchWin.mapPoly = matchWin.mapPoly.intersection(overlapWin.mapPoly)

        # move matching window to imref grid or im2shift grid
        mW_rows, mW_cols = (self.ref.rows, self.ref.cols) if self.grid2use == 'ref' else (self.shift.rows, self.shift.cols)
        matchWin.mapPoly = move_shapelyPoly_to_image_grid(matchWin.mapPoly, matchWin.gt, mW_rows, mW_cols, 'NW')

        # check, ob durch Verschiebung auf Grid das matchWin außerhalb von overlap_poly geschoben wurde
        if not matchWin.mapPoly.within(overlapWin.mapPoly):
            # matchPoly weiter verkleinern # 1 px buffer reicht, weil window nur auf das Grid verschoben wurde
            xLarger,yLarger = matchWin.is_larger_DimXY(overlapWin.boundsIm)
            matchWin.buffer_imXY(-1 if xLarger else 0, -1 if yLarger else 0)

        # matching_win direkt auf grid2use (Rundungsfehler bei Koordinatentrafo beseitigen)
        matchWin.imPoly = round_shapelyPoly_coords(matchWin.imPoly, precision=0, out_dtype=int)

        # Check, ob match Fenster größer als anderes Fenster
        if not (matchWin.mapPoly.within(otherWin.mapPoly) or matchWin.mapPoly==otherWin.mapPoly):
            # dann für anderes Fenster kleinstes Fenster finden, das match-Fenster umgibt
            otherWin.boxImYX = get_smallest_boxImYX_that_contains_boxMapYX(matchWin.boxMapYX,otherWin.gt)

        # evtl. kann es sein, dass bei Shift-Fenster-Vergrößerung das shift-Fenster zu groß für den overlap wird
        while not otherWin.mapPoly.within(overlapWin.mapPoly):
            # -> match Fenster verkleinern und neues anderes Fenster berechnen
            xLarger, yLarger = otherWin.is_larger_DimXY(overlapWin.boundsIm)
            matchWin.buffer_imXY(-1 if xLarger else 0, -1 if yLarger else 0)
441
            previous_area    = otherWin.mapPoly.area
442
443
            otherWin.boxImYX = get_smallest_boxImYX_that_contains_boxMapYX(matchWin.boxMapYX,otherWin.gt)

444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
            if previous_area == otherWin.mapPoly.area:
                self.tracked_errors.append(
                    RuntimeError('Matching window in target image is larger than overlap area but further shrinking '
                                 'the matching window is not possible. Check if the footprints of the input data have '
                                 'been computed correctly. '))
                if not self.ignErr:
                    raise self.tracked_errors[-1]
                break # break out of while loop in order to avoid that code gets stuck here

        if self.tracked_errors:
            self.success = False
        else:
            # check results
            assert matchWin.mapPoly.within(otherWin.mapPoly)
            assert otherWin.mapPoly.within(overlapWin.mapPoly)

            self.imfft_gsd              = self.ref.xgsd       if self.grid2use =='ref' else self.shift.xgsd
            self.ref.win,self.shift.win = (matchWin,otherWin) if self.grid2use =='ref' else (otherWin,matchWin)
            self.matchWin,self.otherWin = matchWin, otherWin
            self.ref.  win.size_YX      = tuple([int(i) for i in self.ref.  win.imDimsYX])
            self.shift.win.size_YX      = tuple([int(i) for i in self.shift.win.imDimsYX])
            match_win_size_XY           = tuple(reversed([int(i) for i in matchWin.imDimsYX]))
            if not self.q and match_win_size_XY != self.win_size_XY:
                print('Target window size %s not possible due to too small overlap area or window position too close '
                      'to an image edge. New matching window size: %s.' %(self.win_size_XY,match_win_size_XY))
            #IO.write_shp('/misc/hy5/scheffler/Temp/matchMapPoly.shp', matchWin.mapPoly,matchWin.prj)
            #IO.write_shp('/misc/hy5/scheffler/Temp/otherMapPoly.shp', otherWin.mapPoly,otherWin.prj)
471
472
473
474
475
476
477
478
479
480
481
482
483
484


    def _get_image_windows_to_match(self):
        """Reads the matching window and the other window using subset read, and resamples the other window to the
        resolution and the pixel grid of the matching window. The result consists of two images with the same
        dimensions and exactly the same corner coordinates."""

        self.matchWin.imParams = self.ref   if self.grid2use=='ref' else self.shift
        self.otherWin.imParams = self.shift if self.grid2use=='ref' else self.ref

        # matchWin per subset-read einlesen -> self.matchWin.data
        rS, rE, cS, cE = GEO.get_GeoArrayPosition_from_boxImYX(self.matchWin.boxImYX)
        assert np.array_equal(np.abs(np.array([rS,rE,cS,cE])), np.array([rS,rE,cS,cE])), \
            'Got negative values in gdalReadInputs for %s.' %self.matchWin.imParams.imName
485
        self.matchWin.data = self.matchWin.imParams.GeoArray[rS:rE,cS:cE, self.matchWin.imParams.band4match]
486
487
488
489
490

        # otherWin per subset-read einlesen
        rS, rE, cS, cE = GEO.get_GeoArrayPosition_from_boxImYX(self.otherWin.boxImYX)
        assert np.array_equal(np.abs(np.array([rS,rE,cS,cE])), np.array([rS,rE,cS,cE])), \
            'Got negative values in gdalReadInputs for %s.' %self.otherWin.imParams.imName
491
        self.otherWin.data = self.otherWin.imParams.GeoArray[rS:rE, cS:cE, self.otherWin.imParams.band4match]
492
493
494
495
496
497
498
499
500
501
502
503
504

        if self.v:
            print('Original matching windows:')
            ref_data, shift_data =  (self.matchWin.data, self.otherWin.data) if self.grid2use=='ref' else \
                                    (self.otherWin.data, self.matchWin.data)
            PLT.subplot_imshow([ref_data, shift_data],[self.ref.title,self.shift.title], grid=True)

        otherWin_subgt = GEO.get_subset_GeoTransform(self.otherWin.gt, self.otherWin.boxImYX)

        # resample otherWin.data to the resolution of matchWin AND make sure the pixel edges are identical
        # (in order to make each image show the same window with the same coordinates)
        # TODO replace cubic resampling by PSF resampling - average resampling leads to sinus like distortions in the fft image that make a precise coregistration impossible. Thats why there is currently no way around cubic resampling.
        tgt_xmin,tgt_xmax,tgt_ymin,tgt_ymax = self.matchWin.boundsMap
505
506
507
508
509
510
        self.otherWin.data = warp_ndarray(self.otherWin.data,
                                          otherWin_subgt,
                                          self.otherWin.imParams.prj,
                                          self.matchWin.imParams.prj,
                                          out_gsd    = (self.imfft_gsd, self.imfft_gsd),
                                          out_bounds = ([tgt_xmin, tgt_ymin, tgt_xmax, tgt_ymax]),
511
                                          rspAlg     = self.rspAlg_calc,
512
                                          in_nodata  = self.otherWin.imParams.nodata,
513
                                          CPUs       = None if self.mp else 1,
514
                                          progress   = False) [0]
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579

        if self.matchWin.data.shape != self.otherWin.data.shape:
            self.tracked_errors.append(
                RuntimeError('Bad output of get_image_windows_to_match. Reference image shape is %s whereas shift '
                             'image shape is %s.' % (self.matchWin.data.shape, self.otherWin.data.shape)))
            raise self.tracked_errors[-1]
        rows, cols = [i if i % 2 == 0 else i - 1 for i in self.matchWin.data.shape]
        self.matchWin.data, self.otherWin.data = self.matchWin.data[:rows, :cols], self.otherWin.data[:rows, :cols]

        assert self.matchWin.data is not None and self.otherWin.data is not None, 'Creation of matching windows failed.'


    @staticmethod
    def _shrink_winsize_to_binarySize(win_shape_YX, target_size=None):
        # type: (tuple, tuple, int , int) -> tuple
        """Shrinks a given window size to the closest binary window size (a power of 2) -
        separately for X- and Y-dimension.

        :param win_shape_YX:    <tuple> source window shape as pixel units (rows,colums)
        :param target_size:     <tuple> source window shape as pixel units (rows,colums)
        """

        binarySizes   = [2**i for i in range(3,14)] # [8, 16, 32, 64, 128, 256, 512, 1024, 2048, 4096, 8192]
        possibSizes_X = [i for i in binarySizes if i <= win_shape_YX[1]]
        possibSizes_Y = [i for i in binarySizes if i <= win_shape_YX[0]]
        if possibSizes_X and possibSizes_Y:
            tgt_size_X,tgt_size_Y = target_size if target_size else (max(possibSizes_X),max(possibSizes_Y))
            closest_to_target_X = int(min(possibSizes_X, key=lambda x:abs(x-tgt_size_X)))
            closest_to_target_Y = int(min(possibSizes_Y, key=lambda y:abs(y-tgt_size_Y)))
            return closest_to_target_Y,closest_to_target_X
        else:
            return None


    def _calc_shifted_cross_power_spectrum(self, im0=None, im1=None, precision=np.complex64):
        """Calculates shifted cross power spectrum for quantifying x/y-shifts.

            :param im0:         reference image
            :param im1:         subject image to shift
            :param precision:   to be quantified as a datatype
            :return:            2D-numpy-array of the shifted cross power spectrum
        """

        im0 = im0 if im0 is not None else self.ref.win.data
        im1 = im1 if im1 is not None else self.shift.win.data
        assert im0.shape == im1.shape, 'The reference and the target image must have the same dimensions.'
        if im0.shape[0]%2!=0: warnings.warn('Odd row count in one of the match images!')
        if im1.shape[1]%2!=0: warnings.warn('Odd column count in one of the match images!')

        wsYX = self._shrink_winsize_to_binarySize(im0.shape) if self.bin_ws              else im0.shape
        wsYX = ((min(wsYX),) * 2                            if self.force_quadratic_win else wsYX) if wsYX else None

        if wsYX:
            time0 = time.time()
            if self.v: print('final window size: %s/%s (X/Y)' % (wsYX[1], wsYX[0]))
            center_YX = np.array(im0.shape)/2
            xmin,xmax,ymin,ymax = int(center_YX[1]-wsYX[1]/2), int(center_YX[1]+wsYX[1]/2),\
                                  int(center_YX[0]-wsYX[0]/2), int(center_YX[0]+wsYX[0]/2)
            in_arr0  = im0[ymin:ymax,xmin:xmax].astype(precision)
            in_arr1  = im1[ymin:ymax,xmin:xmax].astype(precision)

            if self.v:
                PLT.subplot_imshow([in_arr0.astype(np.float32), in_arr1.astype(np.float32)],
                               ['FFTin '+self.ref.title,'FFTin '+self.shift.title], grid=True)

580
            if pyfftw: # if module is installed
581
582
583
584
585
                fft_arr0 = pyfftw.FFTW(in_arr0,np.empty_like(in_arr0), axes=(0,1))()
                fft_arr1 = pyfftw.FFTW(in_arr1,np.empty_like(in_arr1), axes=(0,1))()
            else:
                fft_arr0 = np.fft.fft2(in_arr0)
                fft_arr1 = np.fft.fft2(in_arr1)
586

587
588
589
590
591
            if self.v: print('forward FFTW: %.2fs' %(time.time() -time0))

            eps = np.abs(fft_arr1).max() * 1e-15
            # cps == cross-power spectrum of im0 and im2

592
            temp = np.array(fft_arr0 * fft_arr1.conjugate()) / (np.abs(fft_arr0) * np.abs(fft_arr1) + eps)
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623

            time0 = time.time()
            if 'pyfft' in globals():
                ifft_arr = pyfftw.FFTW(temp,np.empty_like(temp), axes=(0,1),direction='FFTW_BACKWARD')()
            else:
                ifft_arr = np.fft.ifft2(temp)
            if self.v: print('backward FFTW: %.2fs' %(time.time() -time0))

            cps = np.abs(ifft_arr)
            # scps = shifted cps
            scps = np.fft.fftshift(cps)
            if self.v:
                PLT.subplot_imshow([in_arr0.astype(np.uint16), in_arr1.astype(np.uint16), fft_arr0.astype(np.uint8),
                                fft_arr1.astype(np.uint8), scps], titles=['matching window im0', 'matching window im1',
                                "fft result im0", "fft result im1", "cross power spectrum"], grid=True)
                PLT.subplot_3dsurface(scps.astype(np.float32))
        else:
            self.tracked_errors.append(
                RuntimeError('The matching window became too small for calculating a reliable match. Matching failed.'))
            if self.ignErr:
                scps = None
            else:
                raise self.tracked_errors[-1]

        self.fftw_win_size_YX = wsYX
        return scps


    @staticmethod
    def _get_peakpos(scps):
        max_flat_idx = np.argmax(scps)
624
        return np.array(np.unravel_index(max_flat_idx, scps.shape))
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727


    @staticmethod
    def _get_shifts_from_peakpos(peakpos, arr_shape):
        y_shift = peakpos[0]-arr_shape[0]//2
        x_shift = peakpos[1]-arr_shape[1]//2
        return x_shift,y_shift


    @staticmethod
    def _clip_image(im, center_YX, winSzYX): # TODO this is also implemented in GeoArray
        get_bounds = lambda YX,wsY,wsX: (int(YX[1]-(wsX/2)),int(YX[1]+(wsX/2)),int(YX[0]-(wsY/2)),int(YX[0]+(wsY/2)))
        wsY,wsX    = winSzYX
        xmin,xmax,ymin,ymax = get_bounds(center_YX,wsY,wsX)
        return im[ymin:ymax,xmin:xmax]


    def _get_grossly_deshifted_images(self, im0, im1, x_intshift, y_intshift): # TODO this is also implemented in GeoArray # this should update ref.win.data and shift.win.data
        # get_grossly_deshifted_im0
        old_center_YX = np.array(im0.shape)/2
        new_center_YX = [old_center_YX[0]+y_intshift, old_center_YX[1]+x_intshift]

        x_left  = new_center_YX[1]
        x_right = im0.shape[1]-new_center_YX[1]
        y_above = new_center_YX[0]
        y_below = im0.shape[0]-new_center_YX[0]
        maxposs_winsz = 2*min(x_left,x_right,y_above,y_below)

        gdsh_im0 = self._clip_image(im0, new_center_YX, [maxposs_winsz, maxposs_winsz])

        # get_corresponding_im1_clip
        crsp_im1  = self._clip_image(im1, np.array(im1.shape) / 2, gdsh_im0.shape)

        if self.v:
            PLT.subplot_imshow([self._clip_image(im0, old_center_YX, gdsh_im0.shape), crsp_im1],
                               titles=['reference original', 'target'], grid=True)
            PLT.subplot_imshow([gdsh_im0, crsp_im1], titles=['reference virtually shifted', 'target'], grid=True)
        return gdsh_im0,crsp_im1


    @staticmethod
    def _find_side_maximum(scps, v=0):
        centerpos = [scps.shape[0]//2, scps.shape[1]//2]
        profile_left  = scps[ centerpos [0]  ,:centerpos[1]+1]
        profile_right = scps[ centerpos [0]  , centerpos[1]:]
        profile_above = scps[:centerpos [0]+1, centerpos[1]]
        profile_below = scps[ centerpos [0]: , centerpos[1]]

        if v:
            max_count_vals = 10
            PLT.subplot_2dline([[range(len(profile_left)) [-max_count_vals:], profile_left[-max_count_vals:]],
                                [range(len(profile_right))[:max_count_vals] , profile_right[:max_count_vals]],
                                [range(len(profile_above))[-max_count_vals:], profile_above[-max_count_vals:]],
                                [range(len(profile_below))[:max_count_vals:], profile_below[:max_count_vals]]],
                                titles =['Profile left', 'Profile right', 'Profile above', 'Profile below'],
                                shapetuple=(2,2))

        get_sidemaxVal_from_profile = lambda pf: np.array(pf)[::-1][1] if pf[0]<pf[-1] else np.array(pf)[1]
        sm_dicts_lr  = [{'side':si, 'value': get_sidemaxVal_from_profile(pf)} \
                        for pf,si in zip([profile_left,profile_right],['left','right'])]
        sm_dicts_ab  = [{'side':si, 'value': get_sidemaxVal_from_profile(pf)} \
                        for pf,si in zip([profile_above,profile_below],['above','below'])]
        sm_maxVal_lr = max([i['value'] for i in sm_dicts_lr])
        sm_maxVal_ab = max([i['value'] for i in sm_dicts_ab])
        sidemax_lr   = [sm for sm in sm_dicts_lr if sm['value'] is sm_maxVal_lr][0]
        sidemax_ab   = [sm for sm in sm_dicts_ab if sm['value'] is sm_maxVal_ab][0]
        sidemax_lr['direction_factor'] = {'left':-1, 'right':1} [sidemax_lr['side']]
        sidemax_ab['direction_factor'] = {'above':-1,'below':1} [sidemax_ab['side']]

        if v:
            print('Horizontal side maximum found %s. value: %s' %(sidemax_lr['side'],sidemax_lr['value']))
            print('Vertical side maximum found %s. value: %s' %(sidemax_ab['side'],sidemax_ab['value']))

        return sidemax_lr, sidemax_ab


    def _calc_integer_shifts(self, scps):
        peakpos = self._get_peakpos(scps)
        x_intshift, y_intshift = self._get_shifts_from_peakpos(peakpos, scps.shape)
        return x_intshift, y_intshift


    def _validate_integer_shifts(self, im0, im1, x_intshift, y_intshift):

        if (x_intshift, y_intshift)!=(0,0):
            # temporalily deshift images on the basis of calculated integer shifts
            gdsh_im0, crsp_im1 = self._get_grossly_deshifted_images(im0, im1, x_intshift, y_intshift)

            # check if integer shifts are now gone (0/0)
            scps = self._calc_shifted_cross_power_spectrum(gdsh_im0, crsp_im1)
            if scps is not None:
                peakpos = self._get_peakpos(scps)
                x_shift, y_shift = self._get_shifts_from_peakpos(peakpos, scps.shape)
                if (x_shift, y_shift) == (0,0):
                    return 'valid', 0, 0, scps
                else:
                    return 'invalid', x_shift, y_shift, scps
            else:
                return 'invalid', None, None, scps
        else:
            return 'valid', 0, 0, None


728
    def _calc_subpixel_shifts(self, scps):
729
730
731
732
733
734
735
736
737
738
739
        sidemax_lr, sidemax_ab = self._find_side_maximum(scps, self.v)
        x_subshift = (sidemax_lr['direction_factor']*sidemax_lr['value'])/(np.max(scps)+sidemax_lr['value'])
        y_subshift = (sidemax_ab['direction_factor']*sidemax_ab['value'])/(np.max(scps)+sidemax_ab['value'])
        return x_subshift, y_subshift


    @staticmethod
    def _get_total_shifts(x_intshift, y_intshift, x_subshift, y_subshift):
        return x_intshift+x_subshift, y_intshift+y_subshift


740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
    def _validate_ssim_improvement(self):
        # get image dynamic range
        dr = max(self.ref.win.data.max(), self.shift.win.data.max()) - \
             min(self.ref.win.data.max(), self.shift.win.data.max())

        # compute ssim BEFORE shift correction
        from py_tools_ds.ptds.similarity.raster import calc_ssim
        ssim_before = calc_ssim(self.matchWin.data, self.otherWin.data, dynamic_range=dr)
        print('SSIM before', ssim_before)

        #ws = int(self.matchWin.imDimsYX[1]), int(self.matchWin.imDimsYX[0])

        # get shifted GeoArray in the reference image grid
        shifted_geoArr         = copy(self.shift.GeoArray)
        geotransform           = list(shifted_geoArr.gt)
        geotransform[0]       += self.x_shift_map
        geotransform[3]       += self.y_shift_map
        shifted_geoArr.gt      = geotransform
        tgt_xmin, tgt_xmax, tgt_ymin, tgt_ymax = self.ref.win.boundsMap

        arr2warp = shifted_geoArr[:,:,self.shift.band4match] if shifted_geoArr.ndim==3 else shifted_geoArr[:] # FIXME dont read complete band

        from py_tools_ds.ptds.io.raster.GeoArray import get_array_at_mapPos
        sub_arr, sub_gt, sub_prj = get_array_at_mapPos(arr2warp, shifted_geoArr.gt, shifted_geoArr.prj, self.ref.prj,
                                                       mapBounds=(tgt_xmin, tgt_ymin, tgt_xmax, tgt_ymax),
                                                       mapBounds_prj=self.ref.prj,
                                                       out_gsd=(5,5), # FIXME stimmt das?
                                                       rspAlg='cubic')

        # # otherWin per subset-read einlesen
        # rS, rE, cS, cE = GEO.get_GeoArrayPosition_from_boxImYX(self.otherWin.boxImYX)
        # assert np.array_equal(np.abs(np.array([rS, rE, cS, cE])), np.array([rS, rE, cS, cE])), \
        #     'Got negative values in gdalReadInputs for %s.' % self.otherWin.imParams.imName
        # data2warp = shifted_geoArr[rS:rE, cS:cE, self.otherWin.imParams.band4match]
        #
        #
        # if self.v:
        #     print('Original matching windows:')
        #     ref_data, shift_data =  (self.matchWin.data, self.otherWin.data) if self.grid2use=='ref' else \
        #                             (self.otherWin.data, self.matchWin.data)
        #     PLT.subplot_imshow([ref_data, shift_data],[self.ref.title,self.shift.title], grid=True)
        #
        # otherWin_subgt = GEO.get_subset_GeoTransform(self.otherWin.gt, self.otherWin.boxImYX)
        #
        # # resample otherWin.data to the resolution of matchWin AND make sure the pixel edges are identical
        # # (in order to make each image show the same window with the same coordinates)
        # # TODO replace cubic resampling by PSF resampling - average resampling leads to sinus like distortions in the fft image that make a precise coregistration impossible. Thats why there is currently no way around cubic resampling.
        # #tgt_xmin,tgt_xmax,tgt_ymin,tgt_ymax = self.matchWin.boundsMap
        # sub_arr = warp_ndarray(data2warp,
        #                                   otherWin_subgt,
        #                                   self.shift.prj,
        #                                   self.ref.prj,
        #                                   out_gsd    = (self.imfft_gsd, self.imfft_gsd),
        #                                   out_bounds = ([tgt_xmin, tgt_ymin, tgt_xmax, tgt_ymax]),
        #                                   rspAlg     = self.rspAlg_calc,
        #                                   in_nodata  = self.shift.nodata,
        #                                   CPUs       = None if self.mp else 1,
        #                                   progress   = False) [0]




        #out_arr, out_gt, out_prj = \
        #    warp_ndarray(arr, arr_gt, arr_prj, out_prj=out_prj, out_bounds=mapBounds, out_bounds_prj=mapBounds_prj,
        #                 in_nodata=fillVal, out_nodata=fillVal, rspAlg=rspAlg, out_gsd=out_gsd)

        print(sub_arr.shape)
        #GeoArray(sub_arr).show(figsize=(15,15))

        ssim_after = calc_ssim(sub_arr, self.otherWin.data)
        print('SSIM after', ssim_after)



814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
    def calculate_spatial_shifts(self):
        if self.success is False: return None,None

        if self.q:  warnings.simplefilter('ignore')

        # set self.ref.win.data and self.shift.win.data
        self._get_image_windows_to_match()

        im0,im1 = self.ref.win.data, self.shift.win.data

        if self.v:
            print('Matching windows with equalized spatial resolution:')
            PLT.subplot_imshow([im0, im1], [self.ref.title, self.shift.title], grid=True)

        gsd_factor = self.imfft_gsd/self.shift.xgsd

        if self.v: print('gsd_factor',         gsd_factor)
        if self.v: print('imfft_gsd_mapvalues',self.imfft_gsd)

        # calculate cross power spectrum without any de-shifting applied
        scps = self._calc_shifted_cross_power_spectrum()

        if scps is None:
            self.success = False
838
839
840
841
842
843
844
845
846
847
848
            warnings.simplefilter('default')

            return 'fail'


        # calculate spatial shifts
        count_iter = 1
        x_intshift, y_intshift = self._calc_integer_shifts(scps)

        if (x_intshift, y_intshift) == (0, 0):
            self.success = True
849
        else:
850
851
            valid_invalid, x_val_shift, y_val_shift, scps = \
                self._validate_integer_shifts(im0, im1, x_intshift, y_intshift)
852

853
854
            while valid_invalid!='valid':
                count_iter += 1
855

856
                if count_iter > self.max_iter:
857
                    self.success = False
858
                    self.tracked_errors.append(RuntimeError('No match found in the given window.'))
859
860
                    if not self.ignErr:
                        raise self.tracked_errors[-1]
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
                    else:
                        warnings.warn('No match found in the given window.'); break

                if valid_invalid=='invalid' and (x_val_shift, y_val_shift)==(None, None):
                    # this happens if matching window became too small
                    self.success = False
                    break

                if not self.q: print('No clear match found yet. Jumping to iteration %s...' % count_iter)
                if not self.q: print('input shifts: ', x_val_shift, y_val_shift)

                valid_invalid, x_val_shift, y_val_shift, scps = \
                    self._validate_integer_shifts(im0, im1, x_val_shift, y_val_shift)

                # overwrite previous integer shifts if a valid match has been found
                if valid_invalid=='valid':
877
                    self.success = True
878
879
880
881
                    x_intshift, y_intshift = x_val_shift, y_val_shift

        if self.success or self.success is None:
            # get total pixel shifts
882
            x_subshift,   y_subshift         = self._calc_subpixel_shifts(scps)
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
            x_totalshift, y_totalshift       = self._get_total_shifts(x_intshift, y_intshift, x_subshift, y_subshift)

            if max([abs(x_totalshift),abs(y_totalshift)]) > self.max_shift:
                self.success = False
                self.tracked_errors.append(
                    RuntimeError("The calculated shift (X: %s px / Y: %s px) is recognized as too large to "
                                 "be valid. If you know that it is valid, just set the '-max_shift' "
                                 "parameter to an appropriate value. Otherwise try to use a different window "
                                 "size for matching via the '-ws' parameter or define the spectral bands "
                                 "to be used for matching manually ('-br' and '-bs')."
                                 % (x_totalshift, y_totalshift)))
                if not self.ignErr:
                    raise self.tracked_errors[-1]
            else:
                self.success = True
                self.x_shift_px, self.y_shift_px = x_totalshift*gsd_factor, y_totalshift*gsd_factor

                # get map shifts
                new_originY, new_originX    = pixelToMapYX([self.x_shift_px, self.y_shift_px],
                                                geotransform=self.shift.gt, projection=self.shift.prj)[0]
                self.x_shift_map, self.y_shift_map = new_originX - self.shift.gt[0], new_originY - self.shift.gt[3]

                # get length of shift vecor in map units
                self.vec_length_map = float(np.sqrt(self.x_shift_map ** 2 + self.y_shift_map ** 2))

                # get angle of shift vector
                self.vec_angle_deg  = GEO.angle_to_north((self.x_shift_px,self.y_shift_px)).tolist()[0]

                # print results
                if not self.q:
                    print('Detected integer shifts (X/Y):                            %s/%s' %(x_intshift,y_intshift))
                    print('Detected subpixel shifts (X/Y):                           %s/%s' %(x_subshift,y_subshift))
                    print('Calculated total shifts in fft pixel units (X/Y):         %s/%s' %(x_totalshift,y_totalshift))
                    print('Calculated total shifts in reference pixel units (X/Y):   %s/%s' %(x_totalshift,y_totalshift))
                    print('Calculated total shifts in target pixel units (X/Y):      %s/%s' %(self.x_shift_px,self.y_shift_px))
                    print('Calculated map shifts (X,Y):\t\t\t\t  %s/%s' %(self.x_shift_map, self.y_shift_map))
                    print('Calculated absolute shift vector length in map units:     %s'    %self.vec_length_map)
                    print('Calculated angle of shift vector in degrees from North:   %s'    %self.vec_angle_deg)
921
922
923
924
925
926

        if self.x_shift_px or self.y_shift_px:
            self._get_updated_map_info()

        warnings.simplefilter('default')

927
        return 'success'
928
929


930
931
    def _get_updated_map_info(self):
        original_map_info        = geotransform2mapinfo(self.shift.gt, self.shift.prj)
932
        self.updated_map_info    = copy(original_map_info)
933
934
935
936
937
938
939
940
        self.updated_map_info[3] = str(float(original_map_info[3]) + self.x_shift_map)
        self.updated_map_info[4] = str(float(original_map_info[4]) + self.y_shift_map)
        if not self.q: print('Original map info:', original_map_info)
        if not self.q: print('Updated map info: ',self.updated_map_info)


    @property
    def coreg_info(self):
941
942
943
        if self._coreg_info:
            return self._coreg_info
        else:
944
945
            if self.success is None:
                self.calculate_spatial_shifts()
946
947
948
949
950
951
952
953
954
955
956
957
            self._coreg_info = {
                'corrected_shifts_px'   : {'x':self.x_shift_px,  'y':self.y_shift_px },
                'corrected_shifts_map'  : {'x':self.x_shift_map, 'y':self.y_shift_map},
                'original map info'     : geotransform2mapinfo(self.shift.gt, self.shift.prj),
                'updated map info'      : self.updated_map_info,
                'reference projection'  : self.ref.prj,
                'reference geotransform': self.ref.gt,
                'reference grid'        : [ [self.ref.gt[0], self.ref.gt[0]+self.ref.gt[1]],
                                            [self.ref.gt[3], self.ref.gt[3]+self.ref.gt[5]] ],
                'reference extent'      : {'cols':self.ref.xgsd, 'rows':self.ref.ygsd}, # FIXME not needed anymore
                'success'               : self.success}
            return self.coreg_info
958
959
960


    def correct_shifts(self):
961
962
963
964
965
966
967
968
969
        DS = DESHIFTER(self.shift.GeoArray, self.coreg_info,
                       path_out     = self.path_out,
                       fmt_out      = self.fmt_out,
                       out_gsd      = self.out_gsd,
                       resamp_alg   = self.rspAlg_DS,
                       align_grids  = self.align_grids,
                       match_gsd    = self.match_gsd,
                       nodata       = self.shift.nodata,
                       CPUs         = None if self.mp else 1,
970
                       progress     = self.progress,
971
972
                       v            = self.v,
                       q            = self.q)
973
974
        self.deshift_results = DS.correct_shifts()
        return self.deshift_results
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000


    def correct_shifts_OLD(self):
        if self.success:
            if not os.path.exists(os.path.dirname(self.path_out)): os.makedirs(os.path.dirname(self.path_out))
            equal_prj = prj_equal(self.ref.prj, self.shift.prj)

            if equal_prj and not self.align_grids and not self.match_gsd and \
                self.out_gsd in [None,[self.shift.xgsd,self.shift.ygsd]]:
                self._shift_image_by_updating_map_info()
            elif equal_prj and self.align_grids: # match_gsd and out_gsd are respected
                self._align_coordinate_grids()
            else: # match_gsd and out_gsd are respected ### TODO: out_proj implementieren
                self._resample_without_grid_aligning()
        else:
            warnings.warn('No result written because detection of image displacements failed.')


    def _shift_image_by_updating_map_info(self):
        if not self.q: print('\nWriting output...')
        ds_im2shift = gdal.Open(self.shift.path)
        if not ds_im2shift.GetDriver().ShortName == 'ENVI': # FIXME laaangsam
            if self.mp:
                IO.convert_gdal_to_bsq__mp(self.shift.path, self.path_out)
            else:
                os.system('gdal_translate -of ENVI %s %s' %(self.shift.path, self.path_out))