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sRGB EOTF incorrect value for linear section?
See original GitHub issueIssue Description
sRGB EOTF threshold error?
In colour/colour/models/rgb/transfer_functions/srgb.py
in the function “def oetf_reverse_sRGB(V):”
V <= oetf_sRGB(0.0031308),
I was thinking this was an incorrect value till I parsed the code more… Now I see that you’re using the oetf_sRGB to create the “inverse”… the specified value per ISO spec is 0.04045 (or the unrounded 0.0404482) … as a thought the following would reduce overhead wouldn’t it? (Or is this solving some other problem? Perhaps a comment indicating the reasons as at first glance it look like the wrong threshold value is in place).
L = np.where( V <= 0.0404482, V / 12.92, spow((V + 0.055) / 1.055, 2.4), )
Issue Analytics
- State:
- Created 4 years ago
- Comments:5 (3 by maintainers)
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You are welcome! I will close this one but feel free to ask any more questions!
Thank you @KelSolaar — I really appreciate the quick tutorial on numpy !