[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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