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39 lines
684 B
Python
39 lines
684 B
Python
4 years ago
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#!/usr/bin/env python3
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import pyvips
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image = pyvips.Image.new_from_file("demo.jpg", access="random")
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# T = [
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# 0.418385,
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# -0.064912,
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# 1.11204e-12,
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# -1.07285e-16,
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# 0.407118,
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# 1.85136e-13,
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# -0.000143964,
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# -0.0000155811,
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# ]
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T = [
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2.39014,
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0.381091,
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-5.07071e-13,
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8.09745e-16,
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2.45629,
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-1.95474e-12,
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0.000344095,
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0.0000931351,
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]
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i = pyvips.Image.xyz(image.width, image.height)
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x = (i[0] * T[0] + i[1] * T[1] + T[2]) / (i[0] * T[6] + i[1] * T[7] + 1)
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y = (i[0] * T[2] + i[1] * T[4] + T[5]) / (i[0] * T[6] + i[1] * T[7] + 1)
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m = x.bandjoin(y)
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image = image.mapim(m)
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image.write_to_file("./output_pyvips.jpg")
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