Issue 14047
authorLaurentBerger <laurent.berger@univ-lemans.fr>
Wed, 13 Mar 2019 21:28:02 +0000 (22:28 +0100)
committerLaurentBerger <laurent.berger@univ-lemans.fr>
Wed, 13 Mar 2019 21:28:02 +0000 (22:28 +0100)
samples/python/stitching_detailed.py

index 26afd22..645f659 100644 (file)
@@ -64,344 +64,345 @@ import cv2 as cv
 import sys
 import argparse
 
-parser = argparse.ArgumentParser(description='stitching_detailed')
-parser.add_argument('img_names', nargs='+',help='files to stitch',type=str)
-parser.add_argument('--preview',help='Run stitching in the preview mode. Works faster than usual mode but output image will have lower resolution.',type=bool,dest = 'preview' )
-parser.add_argument('--try_cuda',action = 'store', default = False,help='Try to use CUDA. The default value is no. All default values are for CPU mode.',type=bool,dest = 'try_cuda' )
-parser.add_argument('--work_megapix',action = 'store', default = 0.6,help=' Resolution for image registration step. The default is 0.6 Mpx',type=float,dest = 'work_megapix' )
-parser.add_argument('--features',action = 'store', default = 'orb',help='Type of features used for images matching. The default is orb.',type=str,dest = 'features' )
-parser.add_argument('--matcher',action = 'store', default = 'homography',help='Matcher used for pairwise image matching.',type=str,dest = 'matcher' )
-parser.add_argument('--estimator',action = 'store', default = 'homography',help='Type of estimator used for transformation estimation.',type=str,dest = 'estimator' )
-parser.add_argument('--match_conf',action = 'store', default = 0.3,help='Confidence for feature matching step. The default is 0.65 for surf and 0.3 for orb.',type=float,dest = 'match_conf' )
-parser.add_argument('--conf_thresh',action = 'store', default = 1.0,help='Threshold for two images are from the same panorama confidence.The default is 1.0.',type=float,dest = 'conf_thresh' )
-parser.add_argument('--ba',action = 'store', default = 'ray',help='Bundle adjustment cost function. The default is ray.',type=str,dest = 'ba' )
-parser.add_argument('--ba_refine_mask',action = 'store', default = 'xxxxx',help='Set refinement mask for bundle adjustment.  mask is "xxxxx"',type=str,dest = 'ba_refine_mask' )
-parser.add_argument('--wave_correct',action = 'store', default = 'horiz',help='Perform wave effect correction. The default is "horiz"',type=str,dest = 'wave_correct' )
-parser.add_argument('--save_graph',action = 'store', default = None,help='Save matches graph represented in DOT language to <file_name> file.',type=str,dest = 'save_graph' )
-parser.add_argument('--warp',action = 'store', default = 'plane',help='Warp surface type. The default is "spherical".',type=str,dest = 'warp' )
-parser.add_argument('--seam_megapix',action = 'store', default = 0.1,help=' Resolution for seam estimation step. The default is 0.1 Mpx.',type=float,dest = 'seam_megapix' )
-parser.add_argument('--seam',action = 'store', default = 'no',help='Seam estimation method. The default is "gc_color".',type=str,dest = 'seam' )
-parser.add_argument('--compose_megapix',action = 'store', default = -1,help='Resolution for compositing step. Use -1 for original resolution.',type=float,dest = 'compose_megapix' )
-parser.add_argument('--expos_comp',action = 'store', default = 'no',help='Exposure compensation method. The default is "gain_blocks".',type=str,dest = 'expos_comp' )
-parser.add_argument('--expos_comp_nr_feeds',action = 'store', default = 1,help='Number of exposure compensation feed.',type=np.int32,dest = 'expos_comp_nr_feeds' )
-parser.add_argument('--expos_comp_nr_filtering',action = 'store', default = 2,help='Number of filtering iterations of the exposure compensation gains',type=float,dest = 'expos_comp_nr_filtering' )
-parser.add_argument('--expos_comp_block_size',action = 'store', default = 32,help='BLock size in pixels used by the exposure compensator.',type=np.int32,dest = 'expos_comp_block_size' )
-parser.add_argument('--blend',action = 'store', default = 'multiband',help='Blending method. The default is "multiband".',type=str,dest = 'blend' )
-parser.add_argument('--blend_strength',action = 'store', default = 5,help='Blending strength from [0,100] range.',type=np.int32,dest = 'blend_strength' )
-parser.add_argument('--output',action = 'store', default = 'result.jpg',help='The default is "result.jpg"',type=str,dest = 'output' )
-parser.add_argument('--timelapse',action = 'store', default = None,help='Output warped images separately as frames of a time lapse movie, with "fixed_" prepended to input file names.',type=str,dest = 'timelapse' )
-parser.add_argument('--rangewidth',action = 'store', default = -1,help='uses range_width to limit number of images to match with.',type=int,dest = 'rangewidth' )
-args = parser.parse_args()
-img_names=args.img_names
-print(img_names)
-preview = args.preview
-try_cuda = args.try_cuda
-work_megapix = args.work_megapix
-seam_megapix = args.seam_megapix
-compose_megapix = args.compose_megapix
-conf_thresh = args.conf_thresh
-features_type = args.features
-matcher_type = args.matcher
-estimator_type = args.estimator
-ba_cost_func = args.ba
-ba_refine_mask = args.ba_refine_mask
-wave_correct = args.wave_correct
-if wave_correct=='no':
-    do_wave_correct= False
-else:
-    do_wave_correct=True
-if args.save_graph is None:
-    save_graph = False
-else:
-    save_graph =True
-    save_graph_to = args.save_graph
-warp_type = args.warp
-if args.expos_comp=='no':
-    expos_comp_type = cv.detail.ExposureCompensator_NO
-elif  args.expos_comp=='gain':
-    expos_comp_type = cv.detail.ExposureCompensator_GAIN
-elif  args.expos_comp=='gain_blocks':
-    expos_comp_type = cv.detail.ExposureCompensator_GAIN_BLOCKS
-elif  args.expos_comp=='channel':
-    expos_comp_type = cv.detail.ExposureCompensator_CHANNELS
-elif  args.expos_comp=='channel_blocks':
-    expos_comp_type = cv.detail.ExposureCompensator_CHANNELS_BLOCKS
-else:
-    print("Bad exposure compensation method")
-    exit()
-expos_comp_nr_feeds = args.expos_comp_nr_feeds
-expos_comp_nr_filtering = args.expos_comp_nr_filtering
-expos_comp_block_size = args.expos_comp_block_size
-match_conf = args.match_conf
-seam_find_type = args.seam
-blend_type = args.blend
-blend_strength = args.blend_strength
-result_name = args.output
-if args.timelapse is not None:
-    timelapse = True
-    if args.timelapse=="as_is":
-        timelapse_type = cv.detail.Timelapser_AS_IS
-    elif args.timelapse=="crop":
-        timelapse_type = cv.detail.Timelapser_CROP
+if __name__ == '__main__':
+    parser = argparse.ArgumentParser(description='stitching_detailed')
+    parser.add_argument('img_names', nargs='+',help='files to stitch',type=str)
+    parser.add_argument('--preview',help='Run stitching in the preview mode. Works faster than usual mode but output image will have lower resolution.',type=bool,dest = 'preview' )
+    parser.add_argument('--try_cuda',action = 'store', default = False,help='Try to use CUDA. The default value is no. All default values are for CPU mode.',type=bool,dest = 'try_cuda' )
+    parser.add_argument('--work_megapix',action = 'store', default = 0.6,help=' Resolution for image registration step. The default is 0.6 Mpx',type=float,dest = 'work_megapix' )
+    parser.add_argument('--features',action = 'store', default = 'orb',help='Type of features used for images matching. The default is orb.',type=str,dest = 'features' )
+    parser.add_argument('--matcher',action = 'store', default = 'homography',help='Matcher used for pairwise image matching.',type=str,dest = 'matcher' )
+    parser.add_argument('--estimator',action = 'store', default = 'homography',help='Type of estimator used for transformation estimation.',type=str,dest = 'estimator' )
+    parser.add_argument('--match_conf',action = 'store', default = 0.3,help='Confidence for feature matching step. The default is 0.65 for surf and 0.3 for orb.',type=float,dest = 'match_conf' )
+    parser.add_argument('--conf_thresh',action = 'store', default = 1.0,help='Threshold for two images are from the same panorama confidence.The default is 1.0.',type=float,dest = 'conf_thresh' )
+    parser.add_argument('--ba',action = 'store', default = 'ray',help='Bundle adjustment cost function. The default is ray.',type=str,dest = 'ba' )
+    parser.add_argument('--ba_refine_mask',action = 'store', default = 'xxxxx',help='Set refinement mask for bundle adjustment.  mask is "xxxxx"',type=str,dest = 'ba_refine_mask' )
+    parser.add_argument('--wave_correct',action = 'store', default = 'horiz',help='Perform wave effect correction. The default is "horiz"',type=str,dest = 'wave_correct' )
+    parser.add_argument('--save_graph',action = 'store', default = None,help='Save matches graph represented in DOT language to <file_name> file.',type=str,dest = 'save_graph' )
+    parser.add_argument('--warp',action = 'store', default = 'plane',help='Warp surface type. The default is "spherical".',type=str,dest = 'warp' )
+    parser.add_argument('--seam_megapix',action = 'store', default = 0.1,help=' Resolution for seam estimation step. The default is 0.1 Mpx.',type=float,dest = 'seam_megapix' )
+    parser.add_argument('--seam',action = 'store', default = 'no',help='Seam estimation method. The default is "gc_color".',type=str,dest = 'seam' )
+    parser.add_argument('--compose_megapix',action = 'store', default = -1,help='Resolution for compositing step. Use -1 for original resolution.',type=float,dest = 'compose_megapix' )
+    parser.add_argument('--expos_comp',action = 'store', default = 'no',help='Exposure compensation method. The default is "gain_blocks".',type=str,dest = 'expos_comp' )
+    parser.add_argument('--expos_comp_nr_feeds',action = 'store', default = 1,help='Number of exposure compensation feed.',type=np.int32,dest = 'expos_comp_nr_feeds' )
+    parser.add_argument('--expos_comp_nr_filtering',action = 'store', default = 2,help='Number of filtering iterations of the exposure compensation gains',type=float,dest = 'expos_comp_nr_filtering' )
+    parser.add_argument('--expos_comp_block_size',action = 'store', default = 32,help='BLock size in pixels used by the exposure compensator.',type=np.int32,dest = 'expos_comp_block_size' )
+    parser.add_argument('--blend',action = 'store', default = 'multiband',help='Blending method. The default is "multiband".',type=str,dest = 'blend' )
+    parser.add_argument('--blend_strength',action = 'store', default = 5,help='Blending strength from [0,100] range.',type=np.int32,dest = 'blend_strength' )
+    parser.add_argument('--output',action = 'store', default = 'result.jpg',help='The default is "result.jpg"',type=str,dest = 'output' )
+    parser.add_argument('--timelapse',action = 'store', default = None,help='Output warped images separately as frames of a time lapse movie, with "fixed_" prepended to input file names.',type=str,dest = 'timelapse' )
+    parser.add_argument('--rangewidth',action = 'store', default = -1,help='uses range_width to limit number of images to match with.',type=int,dest = 'rangewidth' )
+    args = parser.parse_args()
+    img_names=args.img_names
+    print(img_names)
+    preview = args.preview
+    try_cuda = args.try_cuda
+    work_megapix = args.work_megapix
+    seam_megapix = args.seam_megapix
+    compose_megapix = args.compose_megapix
+    conf_thresh = args.conf_thresh
+    features_type = args.features
+    matcher_type = args.matcher
+    estimator_type = args.estimator
+    ba_cost_func = args.ba
+    ba_refine_mask = args.ba_refine_mask
+    wave_correct = args.wave_correct
+    if wave_correct=='no':
+        do_wave_correct= False
     else:
-        print("Bad timelapse method")
-        exit()
-else:
-    timelapse= False
-range_width = args.rangewidth
-if features_type=='orb':
-    finder= cv.ORB.create()
-elif features_type=='surf':
-    finder= cv.xfeatures2d_SURF.create()
-elif features_type=='sift':
-    finder= cv.xfeatures2d_SIFT.create()
-else:
-    print ("Unknown descriptor type")
-    exit()
-seam_work_aspect = 1
-full_img_sizes=[]
-features=[]
-images=[]
-is_work_scale_set = False
-is_seam_scale_set = False
-is_compose_scale_set = False;
-for name in img_names:
-    full_img = cv.imread(name)
-    if full_img is None:
-        print("Cannot read image ",name)
+        do_wave_correct=True
+    if args.save_graph is None:
+        save_graph = False
+    else:
+        save_graph =True
+        save_graph_to = args.save_graph
+    warp_type = args.warp
+    if args.expos_comp=='no':
+        expos_comp_type = cv.detail.ExposureCompensator_NO
+    elif  args.expos_comp=='gain':
+        expos_comp_type = cv.detail.ExposureCompensator_GAIN
+    elif  args.expos_comp=='gain_blocks':
+        expos_comp_type = cv.detail.ExposureCompensator_GAIN_BLOCKS
+    elif  args.expos_comp=='channel':
+        expos_comp_type = cv.detail.ExposureCompensator_CHANNELS
+    elif  args.expos_comp=='channel_blocks':
+        expos_comp_type = cv.detail.ExposureCompensator_CHANNELS_BLOCKS
+    else:
+        print("Bad exposure compensation method")
         exit()
-    full_img_sizes.append((full_img.shape[1],full_img.shape[0]))
-    if work_megapix < 0:
-        img = full_img
-        work_scale = 1
-        is_work_scale_set = True
+    expos_comp_nr_feeds = args.expos_comp_nr_feeds
+    expos_comp_nr_filtering = args.expos_comp_nr_filtering
+    expos_comp_block_size = args.expos_comp_block_size
+    match_conf = args.match_conf
+    seam_find_type = args.seam
+    blend_type = args.blend
+    blend_strength = args.blend_strength
+    result_name = args.output
+    if args.timelapse is not None:
+        timelapse = True
+        if args.timelapse=="as_is":
+            timelapse_type = cv.detail.Timelapser_AS_IS
+        elif args.timelapse=="crop":
+            timelapse_type = cv.detail.Timelapser_CROP
+        else:
+            print("Bad timelapse method")
+            exit()
+    else:
+        timelapse= False
+    range_width = args.rangewidth
+    if features_type=='orb':
+        finder= cv.ORB.create()
+    elif features_type=='surf':
+        finder= cv.xfeatures2d_SURF.create()
+    elif features_type=='sift':
+        finder= cv.xfeatures2d_SIFT.create()
     else:
-        if is_work_scale_set is False:
-            work_scale = min(1.0, np.sqrt(work_megapix * 1e6 / (full_img.shape[0]*full_img.shape[1])))
+        print ("Unknown descriptor type")
+        exit()
+    seam_work_aspect = 1
+    full_img_sizes=[]
+    features=[]
+    images=[]
+    is_work_scale_set = False
+    is_seam_scale_set = False
+    is_compose_scale_set = False;
+    for name in img_names:
+        full_img = cv.imread(name)
+        if full_img is None:
+            print("Cannot read image ",name)
+            exit()
+        full_img_sizes.append((full_img.shape[1],full_img.shape[0]))
+        if work_megapix < 0:
+            img = full_img
+            work_scale = 1
             is_work_scale_set = True
-        img = cv.resize(src=full_img, dsize=None, fx=work_scale, fy=work_scale, interpolation=cv.INTER_LINEAR_EXACT)
-    if is_seam_scale_set is False:
-        seam_scale = min(1.0, np.sqrt(seam_megapix * 1e6 / (full_img.shape[0]*full_img.shape[1])))
-        seam_work_aspect = seam_scale / work_scale
-        is_seam_scale_set = True
-    imgFea= cv.detail.computeImageFeatures2(finder,img)
-    features.append(imgFea)
-    img = cv.resize(src=full_img, dsize=None, fx=seam_scale, fy=seam_scale, interpolation=cv.INTER_LINEAR_EXACT)
-    images.append(img)
-if matcher_type== "affine":
-    matcher = cv.detail_AffineBestOf2NearestMatcher(False, try_cuda, match_conf)
-elif range_width==-1:
-    matcher = cv.detail.BestOf2NearestMatcher_create(try_cuda, match_conf)
-else:
-    matcher = cv.detail.BestOf2NearestRangeMatcher_create(range_width, try_cuda, match_conf)
-p=matcher.apply2(features)
-matcher.collectGarbage()
-if save_graph:
-    f = open(save_graph_to,"w")
-    f.write(cv.detail.matchesGraphAsString(img_names, p, conf_thresh))
-    f.close()
-indices=cv.detail.leaveBiggestComponent(features,p,0.3)
-img_subset =[]
-img_names_subset=[]
-full_img_sizes_subset=[]
-num_images=len(indices)
-for i in range(len(indices)):
-    img_names_subset.append(img_names[indices[i,0]])
-    img_subset.append(images[indices[i,0]])
-    full_img_sizes_subset.append(full_img_sizes[indices[i,0]])
-images = img_subset;
-img_names = img_names_subset;
-full_img_sizes = full_img_sizes_subset;
-num_images = len(img_names)
-if num_images < 2:
-    print("Need more images")
-    exit()
+        else:
+            if is_work_scale_set is False:
+                work_scale = min(1.0, np.sqrt(work_megapix * 1e6 / (full_img.shape[0]*full_img.shape[1])))
+                is_work_scale_set = True
+            img = cv.resize(src=full_img, dsize=None, fx=work_scale, fy=work_scale, interpolation=cv.INTER_LINEAR_EXACT)
+        if is_seam_scale_set is False:
+            seam_scale = min(1.0, np.sqrt(seam_megapix * 1e6 / (full_img.shape[0]*full_img.shape[1])))
+            seam_work_aspect = seam_scale / work_scale
+            is_seam_scale_set = True
+        imgFea= cv.detail.computeImageFeatures2(finder,img)
+        features.append(imgFea)
+        img = cv.resize(src=full_img, dsize=None, fx=seam_scale, fy=seam_scale, interpolation=cv.INTER_LINEAR_EXACT)
+        images.append(img)
+    if matcher_type== "affine":
+        matcher = cv.detail_AffineBestOf2NearestMatcher(False, try_cuda, match_conf)
+    elif range_width==-1:
+        matcher = cv.detail.BestOf2NearestMatcher_create(try_cuda, match_conf)
+    else:
+        matcher = cv.detail.BestOf2NearestRangeMatcher_create(range_width, try_cuda, match_conf)
+    p=matcher.apply2(features)
+    matcher.collectGarbage()
+    if save_graph:
+        f = open(save_graph_to,"w")
+        f.write(cv.detail.matchesGraphAsString(img_names, p, conf_thresh))
+        f.close()
+    indices=cv.detail.leaveBiggestComponent(features,p,0.3)
+    img_subset =[]
+    img_names_subset=[]
+    full_img_sizes_subset=[]
+    num_images=len(indices)
+    for i in range(len(indices)):
+        img_names_subset.append(img_names[indices[i,0]])
+        img_subset.append(images[indices[i,0]])
+        full_img_sizes_subset.append(full_img_sizes[indices[i,0]])
+    images = img_subset;
+    img_names = img_names_subset;
+    full_img_sizes = full_img_sizes_subset;
+    num_images = len(img_names)
+    if num_images < 2:
+        print("Need more images")
+        exit()
 
-if estimator_type == "affine":
-    estimator = cv.detail_AffineBasedEstimator()
-else:
-    estimator = cv.detail_HomographyBasedEstimator()
-b, cameras =estimator.apply(features,p,None)
-if not b:
-    print("Homography estimation failed.")
-    exit()
-for cam in cameras:
-    cam.R=cam.R.astype(np.float32)
+    if estimator_type == "affine":
+        estimator = cv.detail_AffineBasedEstimator()
+    else:
+        estimator = cv.detail_HomographyBasedEstimator()
+    b, cameras =estimator.apply(features,p,None)
+    if not b:
+        print("Homography estimation failed.")
+        exit()
+    for cam in cameras:
+        cam.R=cam.R.astype(np.float32)
 
-if ba_cost_func == "reproj":
-    adjuster = cv.detail_BundleAdjusterReproj()
-elif ba_cost_func == "ray":
-    adjuster = cv.detail_BundleAdjusterRay()
-elif ba_cost_func == "affine":
-    adjuster = cv.detail_BundleAdjusterAffinePartial()
-elif ba_cost_func == "no":
-    adjuster = cv.detail_NoBundleAdjuster()
-else:
-    print( "Unknown bundle adjustment cost function: ", ba_cost_func )
-    exit()
-adjuster.setConfThresh(1)
-refine_mask=np.zeros((3,3),np.uint8)
-if ba_refine_mask[0] == 'x':
-    refine_mask[0,0] = 1
-if ba_refine_mask[1] == 'x':
-    refine_mask[0,1] = 1
-if ba_refine_mask[2] == 'x':
-    refine_mask[0,2] = 1
-if ba_refine_mask[3] == 'x':
-    refine_mask[1,1] = 1
-if ba_refine_mask[4] == 'x':
-    refine_mask[1,2] = 1
-adjuster.setRefinementMask(refine_mask)
-b,cameras = adjuster.apply(features,p,cameras)
-if not b:
-    print("Camera parameters adjusting failed.")
-    exit()
-focals=[]
-for cam in cameras:
-    focals.append(cam.focal)
-sorted(focals)
-if len(focals)%2==1:
-    warped_image_scale = focals[len(focals) // 2]
-else:
-    warped_image_scale = (focals[len(focals) // 2]+focals[len(focals) // 2-1])/2
-if do_wave_correct:
-    rmats=[]
+    if ba_cost_func == "reproj":
+        adjuster = cv.detail_BundleAdjusterReproj()
+    elif ba_cost_func == "ray":
+        adjuster = cv.detail_BundleAdjusterRay()
+    elif ba_cost_func == "affine":
+        adjuster = cv.detail_BundleAdjusterAffinePartial()
+    elif ba_cost_func == "no":
+        adjuster = cv.detail_NoBundleAdjuster()
+    else:
+        print( "Unknown bundle adjustment cost function: ", ba_cost_func )
+        exit()
+    adjuster.setConfThresh(1)
+    refine_mask=np.zeros((3,3),np.uint8)
+    if ba_refine_mask[0] == 'x':
+        refine_mask[0,0] = 1
+    if ba_refine_mask[1] == 'x':
+        refine_mask[0,1] = 1
+    if ba_refine_mask[2] == 'x':
+        refine_mask[0,2] = 1
+    if ba_refine_mask[3] == 'x':
+        refine_mask[1,1] = 1
+    if ba_refine_mask[4] == 'x':
+        refine_mask[1,2] = 1
+    adjuster.setRefinementMask(refine_mask)
+    b,cameras = adjuster.apply(features,p,cameras)
+    if not b:
+        print("Camera parameters adjusting failed.")
+        exit()
+    focals=[]
     for cam in cameras:
-        rmats.append(np.copy(cam.R))
-    rmats      =       cv.detail.waveCorrect(  rmats,  cv.detail.WAVE_CORRECT_HORIZ)
-    for idx,cam in enumerate(cameras):
-        cam.R = rmats[idx]
-corners=[]
-mask=[]
-masks_warped=[]
-images_warped=[]
-sizes=[]
-masks=[]
-for i in range(0,num_images):
-    um=cv.UMat(255*np.ones((images[i].shape[0],images[i].shape[1]),np.uint8))
-    masks.append(um)
+        focals.append(cam.focal)
+    sorted(focals)
+    if len(focals)%2==1:
+        warped_image_scale = focals[len(focals) // 2]
+    else:
+        warped_image_scale = (focals[len(focals) // 2]+focals[len(focals) // 2-1])/2
+    if do_wave_correct:
+        rmats=[]
+        for cam in cameras:
+            rmats.append(np.copy(cam.R))
+        rmats  =       cv.detail.waveCorrect(  rmats,  cv.detail.WAVE_CORRECT_HORIZ)
+        for idx,cam in enumerate(cameras):
+            cam.R = rmats[idx]
+    corners=[]
+    mask=[]
+    masks_warped=[]
+    images_warped=[]
+    sizes=[]
+    masks=[]
+    for i in range(0,num_images):
+        um=cv.UMat(255*np.ones((images[i].shape[0],images[i].shape[1]),np.uint8))
+        masks.append(um)
 
-warper = cv.PyRotationWarper(warp_type,warped_image_scale*seam_work_aspect) # warper peut etre nullptr?
-for idx in range(0,num_images):
-    K = cameras[idx].K().astype(np.float32)
-    swa = seam_work_aspect
-    K[0,0] *= swa
-    K[0,2] *= swa
-    K[1,1] *= swa
-    K[1,2] *= swa
-    corner,image_wp =warper.warp(images[idx],K,cameras[idx].R,cv.INTER_LINEAR, cv.BORDER_REFLECT)
-    corners.append(corner)
-    sizes.append((image_wp.shape[1],image_wp.shape[0]))
-    images_warped.append(image_wp)
+    warper = cv.PyRotationWarper(warp_type,warped_image_scale*seam_work_aspect) # warper peut etre nullptr?
+    for idx in range(0,num_images):
+        K = cameras[idx].K().astype(np.float32)
+        swa = seam_work_aspect
+        K[0,0] *= swa
+        K[0,2] *= swa
+        K[1,1] *= swa
+        K[1,2] *= swa
+        corner,image_wp =warper.warp(images[idx],K,cameras[idx].R,cv.INTER_LINEAR, cv.BORDER_REFLECT)
+        corners.append(corner)
+        sizes.append((image_wp.shape[1],image_wp.shape[0]))
+        images_warped.append(image_wp)
 
-    p,mask_wp =warper.warp(masks[idx],K,cameras[idx].R,cv.INTER_NEAREST, cv.BORDER_CONSTANT)
-    masks_warped.append(mask_wp.get())
-images_warped_f=[]
-for img in images_warped:
-    imgf=img.astype(np.float32)
-    images_warped_f.append(imgf)
-if cv.detail.ExposureCompensator_CHANNELS == expos_comp_type:
-    compensator = cv.detail_ChannelsCompensator(expos_comp_nr_feeds)
-#    compensator.setNrGainsFilteringIterations(expos_comp_nr_filtering)
-elif cv.detail.ExposureCompensator_CHANNELS_BLOCKS == expos_comp_type:
-    compensator=cv.detail_BlocksChannelsCompensator(expos_comp_block_size, expos_comp_block_size,expos_comp_nr_feeds)
-#    compensator.setNrGainsFilteringIterations(expos_comp_nr_filtering)
-else:
-    compensator=cv.detail.ExposureCompensator_createDefault(expos_comp_type)
-compensator.feed(corners=corners, images=images_warped, masks=masks_warped)
-if seam_find_type == "no":
-    seam_finder = cv.detail.SeamFinder_createDefault(cv.detail.SeamFinder_NO)
-elif seam_find_type == "voronoi":
-    seam_finder = cv.detail.SeamFinder_createDefault(cv.detail.SeamFinder_VORONOI_SEAM);
-elif seam_find_type == "gc_color":
-    seam_finder = cv.detail_GraphCutSeamFinder("COST_COLOR")
-elif seam_find_type == "gc_colorgrad":
-    seam_finder = cv.detail_GraphCutSeamFinder("COST_COLOR_GRAD")
-elif seam_find_type == "dp_color":
-    seam_finder = cv.detail_DpSeamFinder("COLOR")
-elif seam_find_type == "dp_colorgrad":
-    seam_finder = cv.detail_DpSeamFinder("COLOR_GRAD")
-if seam_finder is None:
-    print("Can't create the following seam finder ",seam_find_type)
-    exit()
-seam_finder.find(images_warped_f, corners,masks_warped )
-imgListe=[]
-compose_scale=1
-corners=[]
-sizes=[]
-images_warped=[]
-images_warped_f=[]
-masks=[]
-blender= None
-timelapser=None
-compose_work_aspect=1
-for idx,name in enumerate(img_names): # https://github.com/opencv/opencv/blob/master/samples/cpp/stitching_detailed.cpp#L725 ?
-    full_img  = cv.imread(name)
-    if not is_compose_scale_set:
-        if compose_megapix > 0:
-            compose_scale = min(1.0, np.sqrt(compose_megapix * 1e6 / (full_img.shape[0]*full_img.shape[1])))
-        is_compose_scale_set = True;
-        compose_work_aspect = compose_scale / work_scale;
-        warped_image_scale *= compose_work_aspect
-        warper =  cv.PyRotationWarper(warp_type,warped_image_scale)
-        for i in range(0,len(img_names)):
-            cameras[i].focal *= compose_work_aspect
-            cameras[i].ppx *= compose_work_aspect
-            cameras[i].ppy *= compose_work_aspect
-            sz = (full_img_sizes[i][0] * compose_scale,full_img_sizes[i][1]* compose_scale)
-            K = cameras[i].K().astype(np.float32)
-            roi = warper.warpRoi(sz, K, cameras[i].R);
-            corners.append(roi[0:2])
-            sizes.append(roi[2:4])
-    if abs(compose_scale - 1) > 1e-1:
-        img =cv.resize(src=full_img, dsize=None, fx=compose_scale, fy=compose_scale, interpolation=cv.INTER_LINEAR_EXACT)
+        p,mask_wp =warper.warp(masks[idx],K,cameras[idx].R,cv.INTER_NEAREST, cv.BORDER_CONSTANT)
+        masks_warped.append(mask_wp.get())
+    images_warped_f=[]
+    for img in images_warped:
+        imgf=img.astype(np.float32)
+        images_warped_f.append(imgf)
+    if cv.detail.ExposureCompensator_CHANNELS == expos_comp_type:
+        compensator = cv.detail_ChannelsCompensator(expos_comp_nr_feeds)
+    #    compensator.setNrGainsFilteringIterations(expos_comp_nr_filtering)
+    elif cv.detail.ExposureCompensator_CHANNELS_BLOCKS == expos_comp_type:
+        compensator=cv.detail_BlocksChannelsCompensator(expos_comp_block_size, expos_comp_block_size,expos_comp_nr_feeds)
+    #    compensator.setNrGainsFilteringIterations(expos_comp_nr_filtering)
     else:
-        img = full_img;
-    img_size = (img.shape[1],img.shape[0]);
-    K=cameras[idx].K().astype(np.float32)
-    corner,image_warped =warper.warp(img,K,cameras[idx].R,cv.INTER_LINEAR, cv.BORDER_REFLECT)
-    mask =255*np.ones((img.shape[0],img.shape[1]),np.uint8)
-    p,mask_warped =warper.warp(mask,K,cameras[idx].R,cv.INTER_NEAREST, cv.BORDER_CONSTANT)
-    compensator.apply(idx,corners[idx],image_warped,mask_warped)
-    image_warped_s = image_warped.astype(np.int16)
-    image_warped=[]
-    dilated_mask = cv.dilate(masks_warped[idx],None)
-    seam_mask = cv.resize(dilated_mask,(mask_warped.shape[1],mask_warped.shape[0]),0,0,cv.INTER_LINEAR_EXACT)
-    mask_warped = cv.bitwise_and(seam_mask,mask_warped)
-    if blender==None and not timelapse:
-        blender = cv.detail.Blender_createDefault(cv.detail.Blender_NO)
-        dst_sz = cv.detail.resultRoi(corners=corners,sizes=sizes)
-        blend_width = np.sqrt(dst_sz[2]*dst_sz[3]) * blend_strength / 100
-        if blend_width < 1:
+        compensator=cv.detail.ExposureCompensator_createDefault(expos_comp_type)
+    compensator.feed(corners=corners, images=images_warped, masks=masks_warped)
+    if seam_find_type == "no":
+        seam_finder = cv.detail.SeamFinder_createDefault(cv.detail.SeamFinder_NO)
+    elif seam_find_type == "voronoi":
+        seam_finder = cv.detail.SeamFinder_createDefault(cv.detail.SeamFinder_VORONOI_SEAM);
+    elif seam_find_type == "gc_color":
+        seam_finder = cv.detail_GraphCutSeamFinder("COST_COLOR")
+    elif seam_find_type == "gc_colorgrad":
+        seam_finder = cv.detail_GraphCutSeamFinder("COST_COLOR_GRAD")
+    elif seam_find_type == "dp_color":
+        seam_finder = cv.detail_DpSeamFinder("COLOR")
+    elif seam_find_type == "dp_colorgrad":
+        seam_finder = cv.detail_DpSeamFinder("COLOR_GRAD")
+    if seam_finder is None:
+        print("Can't create the following seam finder ",seam_find_type)
+        exit()
+    seam_finder.find(images_warped_f, corners,masks_warped )
+    imgListe=[]
+    compose_scale=1
+    corners=[]
+    sizes=[]
+    images_warped=[]
+    images_warped_f=[]
+    masks=[]
+    blender= None
+    timelapser=None
+    compose_work_aspect=1
+    for idx,name in enumerate(img_names): # https://github.com/opencv/opencv/blob/master/samples/cpp/stitching_detailed.cpp#L725 ?
+        full_img  = cv.imread(name)
+        if not is_compose_scale_set:
+            if compose_megapix > 0:
+                compose_scale = min(1.0, np.sqrt(compose_megapix * 1e6 / (full_img.shape[0]*full_img.shape[1])))
+            is_compose_scale_set = True;
+            compose_work_aspect = compose_scale / work_scale;
+            warped_image_scale *= compose_work_aspect
+            warper =  cv.PyRotationWarper(warp_type,warped_image_scale)
+            for i in range(0,len(img_names)):
+                cameras[i].focal *= compose_work_aspect
+                cameras[i].ppx *= compose_work_aspect
+                cameras[i].ppy *= compose_work_aspect
+                sz = (full_img_sizes[i][0] * compose_scale,full_img_sizes[i][1]* compose_scale)
+                K = cameras[i].K().astype(np.float32)
+                roi = warper.warpRoi(sz, K, cameras[i].R);
+                corners.append(roi[0:2])
+                sizes.append(roi[2:4])
+        if abs(compose_scale - 1) > 1e-1:
+            img =cv.resize(src=full_img, dsize=None, fx=compose_scale, fy=compose_scale, interpolation=cv.INTER_LINEAR_EXACT)
+        else:
+            img = full_img;
+        img_size = (img.shape[1],img.shape[0]);
+        K=cameras[idx].K().astype(np.float32)
+        corner,image_warped =warper.warp(img,K,cameras[idx].R,cv.INTER_LINEAR, cv.BORDER_REFLECT)
+        mask =255*np.ones((img.shape[0],img.shape[1]),np.uint8)
+        p,mask_warped =warper.warp(mask,K,cameras[idx].R,cv.INTER_NEAREST, cv.BORDER_CONSTANT)
+        compensator.apply(idx,corners[idx],image_warped,mask_warped)
+        image_warped_s = image_warped.astype(np.int16)
+        image_warped=[]
+        dilated_mask = cv.dilate(masks_warped[idx],None)
+        seam_mask = cv.resize(dilated_mask,(mask_warped.shape[1],mask_warped.shape[0]),0,0,cv.INTER_LINEAR_EXACT)
+        mask_warped = cv.bitwise_and(seam_mask,mask_warped)
+        if blender==None and not timelapse:
             blender = cv.detail.Blender_createDefault(cv.detail.Blender_NO)
-        elif blend_type == "multiband":
-            blender = cv.detail_MultiBandBlender()
-            blender.setNumBands((np.log(blend_width)/np.log(2.) - 1.).astype(np.int))
-        elif blend_type == "feather":
-            blender = cv.detail_FeatherBlender()
-            blender.setSharpness(1./blend_width)
-        blender.prepare(dst_sz)
-    elif timelapser==None  and timelapse:
-        timelapser = cv.detail.Timelapser_createDefault(timelapse_type)
-        timelapser.initialize(corners, sizes)
-    if timelapse:
-        matones=np.ones((image_warped_s.shape[0],image_warped_s.shape[1]), np.uint8)
-        timelapser.process(image_warped_s, matones, corners[idx])
-        pos_s = img_names[idx].rfind("/");
-        if pos_s == -1:
-            fixedFileName = "fixed_" + img_names[idx];
+            dst_sz = cv.detail.resultRoi(corners=corners,sizes=sizes)
+            blend_width = np.sqrt(dst_sz[2]*dst_sz[3]) * blend_strength / 100
+            if blend_width < 1:
+                blender = cv.detail.Blender_createDefault(cv.detail.Blender_NO)
+            elif blend_type == "multiband":
+                blender = cv.detail_MultiBandBlender()
+                blender.setNumBands((np.log(blend_width)/np.log(2.) - 1.).astype(np.int))
+            elif blend_type == "feather":
+                blender = cv.detail_FeatherBlender()
+                blender.setSharpness(1./blend_width)
+            blender.prepare(dst_sz)
+        elif timelapser==None  and timelapse:
+            timelapser = cv.detail.Timelapser_createDefault(timelapse_type)
+            timelapser.initialize(corners, sizes)
+        if timelapse:
+            matones=np.ones((image_warped_s.shape[0],image_warped_s.shape[1]), np.uint8)
+            timelapser.process(image_warped_s, matones, corners[idx])
+            pos_s = img_names[idx].rfind("/");
+            if pos_s == -1:
+                fixedFileName = "fixed_" + img_names[idx];
+            else:
+                fixedFileName = img_names[idx][:pos_s + 1 ]+"fixed_" + img_names[idx][pos_s + 1: ]
+            cv.imwrite(fixedFileName, timelapser.getDst())
         else:
-            fixedFileName = img_names[idx][:pos_s + 1 ]+"fixed_" + img_names[idx][pos_s + 1: ]
-        cv.imwrite(fixedFileName, timelapser.getDst())
-    else:
-        blender.feed(cv.UMat(image_warped_s), mask_warped, corners[idx])
-if not timelapse:
-    result=None
-    result_mask=None
-    result,result_mask = blender.blend(result,result_mask)
-    cv.imwrite(result_name,result)
-    zoomx =600/result.shape[1]
-    dst=cv.normalize(src=result,dst=None,alpha=255.,norm_type=cv.NORM_MINMAX,dtype=cv.CV_8U)
-    dst=cv.resize(dst,dsize=None,fx=zoomx,fy=zoomx)
-    cv.imshow(result_name,dst)
-    cv.waitKey()
+            blender.feed(cv.UMat(image_warped_s), mask_warped, corners[idx])
+    if not timelapse:
+        result=None
+        result_mask=None
+        result,result_mask = blender.blend(result,result_mask)
+        cv.imwrite(result_name,result)
+        zoomx =600/result.shape[1]
+        dst=cv.normalize(src=result,dst=None,alpha=255.,norm_type=cv.NORM_MINMAX,dtype=cv.CV_8U)
+        dst=cv.resize(dst,dsize=None,fx=zoomx,fy=zoomx)
+        cv.imshow(result_name,dst)
+        cv.waitKey()