| import cv2 |
| import pkg_resources |
| from skimage.exposure import match_histograms |
|
|
| def maintain_colors(prev_img, color_match_sample, mode): |
| skimage_version = pkg_resources.get_distribution('scikit-image').version |
| is_skimage_v20_or_higher = pkg_resources.parse_version(skimage_version) >= pkg_resources.parse_version('0.20.0') |
| |
| match_histograms_kwargs = {'channel_axis': -1} if is_skimage_v20_or_higher else {'multichannel': True} |
| |
| if mode == 'RGB': |
| return match_histograms(prev_img, color_match_sample, **match_histograms_kwargs) |
| elif mode == 'HSV': |
| prev_img_hsv = cv2.cvtColor(prev_img, cv2.COLOR_RGB2HSV) |
| color_match_hsv = cv2.cvtColor(color_match_sample, cv2.COLOR_RGB2HSV) |
| matched_hsv = match_histograms(prev_img_hsv, color_match_hsv, **match_histograms_kwargs) |
| return cv2.cvtColor(matched_hsv, cv2.COLOR_HSV2RGB) |
| else: |
| prev_img_lab = cv2.cvtColor(prev_img, cv2.COLOR_RGB2LAB) |
| color_match_lab = cv2.cvtColor(color_match_sample, cv2.COLOR_RGB2LAB) |
| matched_lab = match_histograms(prev_img_lab, color_match_lab, **match_histograms_kwargs) |
| return cv2.cvtColor(matched_lab, cv2.COLOR_LAB2RGB) |
|
|
