Assessment of MPEG-4 VTC and JPEG2000 Dynamic Memory Requirements

The dynamic memory requirements for ASAP schedules of MPEG-4 and JPEG2000 wavelet codecs are studied, using a queueing model. The straightforward assumption that the tight data dependencies of the MPEG-4 parent-children tree coding induce higher memory requirements than the attractive, independent block coding approach of JPEG2000 is demonstrated to be wrong. In particular, an MPEG-4 wavelet decoder is always less memory hungry than a JPEG2000 decoder. The memory requirements for an MPEG4 wavelet encoder are often lower than, and in exceptional cases similar to those of its JPEG2000 counterpart.