[FFmpeg-trac] #3404(avfilter:open): High quality magnification filter

FFmpeg trac at avcodec.org
Fri Jun 6 01:36:51 CEST 2014

#3404: High quality magnification filter
             Reporter:  wyatt8740    |                    Owner:  ubitux
                 Type:  enhancement  |                   Status:  open
             Priority:  wish         |                Component:  avfilter
              Version:  git-master   |               Resolution:
             Keywords:  hqx xbr      |               Blocked By:
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |

Comment (by ubitux):

 Representation for optional combinations implemented (that was painful...
 code a bit ugly). So now, we have:

 - red:   must have a diff with center pixel
 - gray:  must not have a diff with center pixel
 - black: whether there is a diff or not doesn't matter

 I hope I didn't get it wrong. I think I'll try to implement from this,
 unless I see a way of improving even more the representation.

 (Note: the wrong colors for the coeff intensity are also fixed)

Ticket URL: <https://trac.ffmpeg.org/ticket/3404#comment:6>
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