Embedded Image/Video Coder (EIC/EVC)
The underlying technologies that enable us to quickly reshape a compressed image/video to any size we want in any form we want is the embedded image/video codec (EIC/EVC).
Fig 1. The forms of reshaping supported by the EIC/EVC codec.
EIC/EVC may reshape (or transcode, scalable code) a master compressed bitstream into an application bitstream of reduced color component (from color to gray), reduced resolution, reduced frame rate, and reduced bitrate (increased compression ratio) or a combination of any of the above. Because the resultant application bitstream is a subset of the master bitstream, the reshaping operation can be performed very fast. Hundreds of megabytes of compressed media can be reshaped within seconds.
EIC/EVC related research:
Motion compensated lifting wavelet
Seamlessly multiplexed embedded codec
©Copyright by Jin Li, Feb. 23, 2003