상세정보
학술지
Improved Redundant Picture Coding Using Polyphase Downsampling for H.264
- 발행일
- 200702
- 출처
- ETRI Journal, v.29 no.1, pp.18-26
- ISSN
- 1225-6463
- 출판사
- 한국전자통신연구원 (ETRI)
- 협약과제
- 06MR2600, 통방융합 환경에서의 유비쿼터스 콘텐츠 서비스 기술 개발, 김재곤
- 초록
- This paper presents an improved redundant picture coding method that efficiently enhances the error resiliency of H.264. The proposed method applies polyphase downsampling to residual blocks obtained from inter prediction and selectively encodes the rearranged residual blocks in the redundant picture coding process. Moreover, a spatial-temporal sample construction method is developed for the redundant coded picture, which further improves the reconstructed picture quality in error prone environments. Simulations based on JM11.0 were run to verify the proposed method on different test sequences in various error prone environments with average packet loss rates of 3%, 5%, 10%, and 20%. Results of the simulations show that the presented method significantly improves the robustness of H.264 to packet loss by 1.6 dB PSNR on average over the conventional redundant picture coding method.
- KSP 제안 키워드
- Average Packet Loss, Coding method, Construction Method, Inter prediction, Picture coding, Picture quality, Spatial and temporal, error resiliency