[Bug 722656] videoconvert: scoring system ranks colour loss very low

[GStreamer (bugzilla.gnome.org)]

https://bugzilla.gnome.org/show_bug.cgi?id=722656
  GStreamer | gst-plugins-base | git

Wim Taymans <wim.taymans> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
                 CC|                            |wim.taymans at gmail.com
         Resolution|                            |FIXED
   Target Milestone|HEAD                        |1.2.3

--- Comment #2 from Wim Taymans <wim.taymans at gmail.com> 2014-01-24 11:27:10 UTC ---
Commited a fairly more elaborate and scientifically correct version:

commit 4c8e211e57146f00fff325403c07217274e9b2f1
Author: Wim Taymans <wtaymans at redhat.com>
Date:   Fri Jan 24 12:19:43 2014 +0100

    videoconvert: tweak the scoring algorithm

    Make a little table of conversions and manually score them. Use this
    info to define better weights for the scoring algorithm.
    give separate scores for doing changes and the impact of the change,
    This allows us to avoid conversion when we can but still allow fairly
    lossless changes.
    The old code did not penalize GRAY conversions, PAL conversions were
    punished too low and depth conversions too high.

    Fixes https://bugzilla.gnome.org/show_bug.cgi?id=722656

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