Title :
Performance analysis of low bit rate H.26L video encoder
Author :
Hallapuro, Antti ; Lappalainen, Ville ; Hämäläinen, Timo D.
Author_Institution :
Nokia Res. Center, Tampere, Finland
Abstract :
A new video encoder proposal, H.26L, is compared against H.263 and H.263+. In the comparison, both computational complexity and compression performance are analyzed. Moreover, the trade-off possibilities between the complexity and compression performance within H.26L are presented. Experimental comparisons with H.263 and H.263+ show that H.26L reduces the output bit rate about 30% with the same quality. The computation time increases about three times compared to H.263 and leads into the encoding speed of 3-6 fps for QCIF sequences on a 400 MHz Pentium III processor. Realtime operation can be achieved by applying additional, algorithmic and platform-specific optimizations
Keywords :
computational complexity; discrete cosine transforms; encoding; image sequences; motion estimation; standards; video coding; 400 MHz Pentium III processor; H.263 video encoder; H.263+ video encoder; QCIF sequences; compression performance; computational complexity; low bit rate H.26L video encoder; output bit rate; performance analysis; real-time operation; Bit rate; Discrete cosine transforms; Encoding; Filters; Interpolation; Laboratories; MPEG 4 Standard; Motion estimation; Performance analysis; Pixel;
Conference_Titel :
Acoustics, Speech, and Signal Processing, 2001. Proceedings. (ICASSP '01). 2001 IEEE International Conference on
Conference_Location :
Salt Lake City, UT
Print_ISBN :
0-7803-7041-4
DOI :
10.1109/ICASSP.2001.941120
