[FFmpeg-trac] #7825(avfilter:closed): Malfunctioning `ssim` filter?..
FFmpeg
trac at avcodec.org
Sat Feb 8 13:12:18 EET 2020
#7825: Malfunctioning `ssim` filter?..
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Reporter: gdgsdg123 | Owner:
Type: defect | Status: closed
Priority: normal | Component: avfilter
Version: git-master | Resolution: fixed
Keywords: ssim | Blocked By:
Blocking: | Reproduced by developer: 0
Analyzed by developer: 0 |
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Comment (by gdgsdg123):
Replying to [comment:4 cehoyos]:
> ...please understand that there will always be a resolution high enough
to compensate for one different pixel.
I do understand that but also realize: the error is certainly avoidable.
[[BR]]
By distinguishing the case of zero absolute difference from other cases
(using a flag), conditionally adapt the original algorithm's evaluation to
some slightly more inaccurate but practically still accurate enough
values. (thus the distinction, and better fit of the definition)
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Ticket URL: <https://trac.ffmpeg.org/ticket/7825#comment:14>
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