Terranigma
26th May 2007, 16:02
Which would be more efficient to use? DCT 1 or 2?
1 - use block DCT instead of spatial data (slow);
2 - mixed spatial and DCT data; weight is dependent on mean frame luma difference;
Would mode 2 be combining the spatial and DCT data for a frame, or would it decide whether or not to use spatial or DCT data on a per-frame basis? If it combines and use both the spatial and DCT data for a frame, rather than being adaptive with it and having it choose which it thinks would be more suitable, then obviously mode 2 would be more efficient. Basically I need a better understanding of how DCT 2 works. :devil:
Terranigma looks at Fizick
1 - use block DCT instead of spatial data (slow);
2 - mixed spatial and DCT data; weight is dependent on mean frame luma difference;
Would mode 2 be combining the spatial and DCT data for a frame, or would it decide whether or not to use spatial or DCT data on a per-frame basis? If it combines and use both the spatial and DCT data for a frame, rather than being adaptive with it and having it choose which it thinks would be more suitable, then obviously mode 2 would be more efficient. Basically I need a better understanding of how DCT 2 works. :devil:
Terranigma looks at Fizick