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23 lines
710 B
Python
23 lines
710 B
Python
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import numpy as np
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def sRGB_linear_to_sRGB(rgb_linear):
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'''sRGB standard for gamma inverse correction.'''
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rgb = np.where( rgb_linear <= 0.00304, 12.92 * rgb_linear, 1.055 * np.power(rgb_linear, 1.0/2.4) - 0.055)
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# clip intensity if needed (rgb values > 1.0) by scaling
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rgb_max = np.amax(rgb, axis=0) + 0.00001 # avoid division by zero
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intensity_cutoff = 1.0
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rgb = np.where(rgb_max > intensity_cutoff, rgb * intensity_cutoff / (rgb_max), rgb)
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return rgb
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def sRGB_to_sRGB_linear(rgb):
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'''sRGB standard for gamma inverse correction.'''
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rgb_linear = np.where( rgb <= 0.03928, rgb / 12.92, np.power((rgb + 0.055) / 1.055, 2.4))
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return rgb_linear
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