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fix LUT_CACHE is None error #725

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fix LUT_CACHE is None error #725

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4 changes: 4 additions & 0 deletions imgaug/augmenters/color.py
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Original file line number Diff line number Diff line change
Expand Up @@ -2485,6 +2485,10 @@ def _transform_image_cv2(cls, image_hsv, hue, saturation):
# image_hsv[..., 1] = cv2.LUT(image_hsv[..., 1], table_saturation)

# code with using cache (at best maybe 10% faster for 64x64):
# if process is spawned cls._LUT_CACHE is None
if cls._LUT_CACHE is None:
cls._LUT_CACHE = cls._generate_lut_table()

table_hue = cls._LUT_CACHE[0]
table_saturation = cls._LUT_CACHE[1]
tables = [
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