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- import itertools
-
- import cv2
-
-
- def show_and_wait(img, name="img", wait=True, save=False):
- cv2.imshow(name, img)
- if wait:
- while cv2.waitKey() != ord('q'):
- continue
- cv2.destroyAllWindows()
- if save:
- cv2.imwrite(f"{name}.jpeg", img)
-
-
- def check_if_generator_is_empty(generator):
- try:
- first = next(generator)
- except StopIteration:
- return None
- return itertools.chain([first], generator)
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