On Wed, Apr 13, 2016 at 7:24 PM, Davinder Singh <ds.mud...@gmail.com> wrote: > good vectors? how can i improve them? since it search for every possible > place, it should give best match. can you give more details, why > surrounding vectors need to be considered? > > also i tried to compare it with export_mvs, they seems quite similar. > the export_mvs ones, sometimes use multiple vectors at for certain blocks.
In relatively feature less blocks your search will end up just fitting noise-- vector points in some random direction because some random white patch of wall happens to be a slightly better fit, rather than the true motion. Good motion field estimation should be regularized by considering larger areas, because real motion is piece-wise smooth. When the motion field is coded (as in video coding) the bit-cost of the vectors is also a consideration, but this kind of regularization is important even when the field is not coded because it will make a more accurate result. _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-devel
