12 lines
406 B
Python
12 lines
406 B
Python
def lum_contrast(clip, lum = 0, contrast=0, contrast_thr=127):
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""" luminosity-contrast correction of a clip """
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def fl_image(im):
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im = 1.0*im # float conversion
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corrected = im + lum + contrast*(im-float(contrast_thr))
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corrected[corrected < 0] = 0
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corrected[corrected > 255] = 255
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return corrected.astype('uint8')
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return clip.fl_image(fl_image)
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