[vorbis-dev] video compression using textured polygons?
jsr at dds.nl
Sun Jan 7 03:43:05 PST 2001
> Also, if the movements of the vertices would be taken
> across multiple frames they could be expressed as splines,
> causing more compression.
That's nice ofcourse, but how about taking this to 3D? The problem would
be equivalent to finding surfaces in a voxel volume, for which there are
already algorithms available. The textures become two-axis-aligned
surfaces in the volume. And if we use surfaces we will also have the
motion data encoded straight away, making matching of triangles a lot
easier, which should speed up the decoder a lot. We could also chop the
volume if a totally new image appears (ie an I-frame (I think? one that
totally replaces the previous one, like when the video switches from one
camera to another one)). On MTV-style videos with lots of camera
switching this would do worse though. Perhaps only cut if the resulting
slices are thick enough.
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