On Fast Microscopic Browsing of MPEG compressed video
Boon-Lock Ye, Tim Watson · 1998
In this papel: we address the problem of rapid access to individual shots and frames in MPEG video. We build upon the compressed video processing framework proposed in L.5, 61, andpropose new and fast a1 orithms based on an adaptive mixture of approximation tec fniq ues for extracting spatially reduced image sequence of uniform quality from MPEG video across differentframe types and also under different motion activities in the scenes. The algorithms execute faster than realtime on a Pentium personal computer: demonstrate how the reduced images facilitate fast and convenient shot and frame-level video browsing and access, shot level editing and annotation, without the need.for jrequent decompression of MPEG video. We further propose methods for reducing the awcilia y data size associated with the reduced images through exploitation of spatial and temporal redundancy. The algorithms, tools for browsing and techniques,for video processing presented in this paper have been used by many in IBM Research on more than 30 hours of MPEG-I video for video browsing und analysis, and found to be indispensable.