Potential integer overflow

[sizov-kirill]

In the code below we see that img can be of type uint8, then img is multiplied by 2⁸ and 2¹⁶, but uint8 cannot store such large numbers.

datumaro/datumaro/util/mask_tools.py

Lines 116 to 119 in 5209d42

	def bgr2index(img):
	if img.dtype.kind not in {'b', 'i', 'u'}:
	img = img.astype(np.uint8)
	return (img[..., 0] << 16) + (img[..., 1] << 8) + img[..., 2]