Title :
The block-based coder mode in an object-based analysis-synthesis coder
Author_Institution :
AT&T Bell Labs., Holmdel, NJ, USA
fDate :
31 Oct-2 Nov 1994
Abstract :
For object-based analysis-synthesis coding (OBASC) of moving images, each moving object is described by three parameter sets defining its motion, shape and surface color. They are coded using an object-dependent parameter coding. Compared to block-based hybrid coding, OBASC requires the additional transmission of shape parameters. This is only justified, if it increases the overall coding efficiency. The efficiency of the block-based and the object-based coders depends to a large extend on the size of the moving objects. Objects smaller than 256 pels should be coded by a block-based coder whereas larger objects are preferably coded by an object-based coder
Keywords :
image coding; image colour analysis; motion estimation; signal synthesis; block-based coder mode; block-based hybrid coding; coding efficiency; moving image coding; moving objects size; object motion; object shape; object-based analysis-synthesis coder; object-dependent parameter coding; parameter sets; shape parameters transmission; surface color; Code standards; Image analysis; Image coding; Image color analysis; Image motion analysis; Image sequences; Motion analysis; PSNR; Shape; Switches;
Conference_Titel :
Signals, Systems and Computers, 1994. 1994 Conference Record of the Twenty-Eighth Asilomar Conference on
Conference_Location :
Pacific Grove, CA
Print_ISBN :
0-8186-6405-3
DOI :
10.1109/ACSSC.1994.471602
