Title :
Selective macroblock level switching for model-based coded video
Author :
Woods, J.C. ; Ramanan, S. ; Pearson, D.E.
Author_Institution :
Dept. of Electron. Syst. Eng., Essex Univ., Colchester
fDate :
3/4/1999 12:00:00 AM
Abstract :
Previous switched model-based coders have employed switching techniques at a high level, switching the entire frame between an H.261 coded image and a model-based image according to a bitrate/quality metric. The performance of a new scheme, in which the switching takes place in selected regions, is reported. Subjective quality and PSNR are improved, particularly for large rotational or translational motion
Keywords :
motion compensation; switching; video coding; PSNR improvement; model-based coded video; rotational motion; selected regions; selective macroblock level switching; subjective quality improvement; translational motion;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19990264
