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Proceedings Paper

New scene change control scheme based on pseudoskipped picture
Author(s): Youngsun Lee; Jinwhan Lee; Hyunsik Chang; Jae Yeal Nam
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Paper Abstract

A new scene change control scheme which improves the video coding performance for sequences that have many scene changed pictures is proposed in this paper. The scene changed pictures except intra-coded picture usually need more bits than normal pictures in order to maintain constant picture quality. The major idea of this paper is how to obtain extra bits which are needed to encode scene changed pictures. We encode a B picture which is located before a scene changed picture like a skipped picture. We call such a B picture as a pseudo-skipped picture. By generating the pseudo-skipped picture like a skipped picture. We call such a B picture as a pseudo-skipped picture. By generating the pseudo-skipped picture, we can save some bits and they are added to the originally allocated target bits to encode the scene changed picture. The simulation results show that the proposed algorithm improves encoding performance about 0.5 to approximately 2.0 dB of PSNR compared to MPEG-2 TM5 rate controls scheme. In addition, the suggested algorithm is compatible with MPEG-2 video syntax and the picture repetition is not recognizable.

Paper Details

Date Published: 10 January 1997
PDF: 8 pages
Proc. SPIE 3024, Visual Communications and Image Processing '97, (10 January 1997); doi: 10.1117/12.263226
Show Author Affiliations
Youngsun Lee, Electronics and Telecommunications Research Institute (South Korea)
Jinwhan Lee, Electronics and Telecommunications Research Institute (South Korea)
Hyunsik Chang, Electronics and Telecommunications Research Institute (South Korea)
Jae Yeal Nam, Keimyung Univ. (South Korea)


Published in SPIE Proceedings Vol. 3024:
Visual Communications and Image Processing '97
Jan Biemond; Edward J. Delp, Editor(s)

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