#9947: Misbehaving Curves Filter
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Reporter: kesh | Owner: (none)
Type: defect | Status: new
Priority: normal | Component:
| undetermined
Version: unspecified | Resolution:
Keywords: curves | Blocked By:
Blocking: | Reproduced by developer: 0
Analyzed by developer: 0 |
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Comment (by kesh):
IMHO, it appears that
[https://docs.scipy.org/doc/scipy/reference/generated/scipy.interpolate.PchipInterpolator.html#scipy.interpolate.PchipInterpolator
PCHIP 1-D monotonic cubic interpolation] produces a curve much like GIMP.
Here is the PCHIP curve of the presented case over the FFmpeg curve:
[[Image(pchip_ffmpeg_curves.png)]]
Based on what I've seen online, this interpolation algorithm may very well
be what Photoshop uses.
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Ticket URL: <https://trac.ffmpeg.org/ticket/9947#comment:3>
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