상세정보
학술대회
Multimedia Data Generation Algorithm for Multi-user Video Conferencing System over Ad-hoc Networks
- 발행일
- 201206
- 출처
- International Symposium on Consumer Electronics (ISCE) 2012, pp.1-3
- 협약과제
- 12MD1600, 근거리 이동환경 AV 그룹통신 단말 플랫폼 개발, 마평수
- 초록
- In this paper, a multimedia data generation algorithm for multi-user video conferencing system over ad-hoc networks is proposed. In the proposed method, the scene-changed frame is estimated using the number of bits pre-encoded by the hardware accelerator and the percentage of the intra-coded macroblocks in each frame. The resulting scene-changed frames are re-encoded as the intra-coded frames and then transmitted to the receiver. Compared to the bit-stream generated from encoding the entire sequence, the proposed algorithm achieves up to about 50% reduction of the bit-rate without skipping the key frames while maintaining the perceptual video quality. © 2012 IEEE.
- KSP 제안 키워드
- Ad Hoc Networks, Bit Rate, Data generation, Generation algorithm, Hardware accelerator, Key frame, Multi-user video conferencing, Multimedia data, Video conferencing system, bit stream, perceptual video quality