New scene change control scheme based on pseudoskipped picture

Youngsun Lee; Jinwhan Lee; Hyunsik Chang; Jae Yeal Nam

doi:10.1117/12.263226

10 January 1997 New scene change control scheme based on pseudoskipped picture

Youngsun Lee, Jinwhan Lee, Hyunsik Chang, Jae Yeal Nam

Proceedings Volume 3024, Visual Communications and Image Processing '97; (1997) https://doi.org/10.1117/12.263226
Event: Electronic Imaging '97, 1997, San Jose, CA, United States

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.

Citation Download Citation

Youngsun Lee, Jinwhan Lee, Hyunsik Chang, and Jae Yeal Nam "New scene change control scheme based on pseudoskipped picture", Proc. SPIE 3024, Visual Communications and Image Processing '97, (10 January 1997); https://doi.org/10.1117/12.263226

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KEYWORDS

Video

Computer programming

Detection and tracking algorithms

Computer simulations

Target detection

Video coding

Control systems

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