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Constrained In-Loop Filtering for Error Resiliency in High Efficiency Video Coding
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- Authors
- Jinho Lee, Hui Yong Kim, Sung-Chang Lim, Jin Soo Choi
- Issue Date
- 2013-04
- Citation
- Optical Engineering, v.52, no.7, pp.1-8
- ISSN
- 0091-3286
- Publisher
- SPIE
- Language
- English
- Type
- Journal Article
- Project Code
- 12PR1600, Development of Multiview 3D Compatible UHDTV Broadcasting Technology, Jin Woong Kim
- Abstract
- In error-prone environments, packets could be lost during the transmission of compressed video bitstream, and corrupted errors by the lost packets could be propagated until it meets a refresh point. To defect the error propagation, constrained intra-prediction in high efficiency video coding (HEVC) performs intra-prediction using only neighboring intracoded samples. However, the errors could be propagated to intracoded blocks by an in-loop filtering process, since the in-loop filtering is performed regardless of the prediction modes of blocks, even though constrained intra-prediction is used. In this paper, a constrained in-loop filtering is proposed to protect intra-coded samples from error propagation by adaptively applying filters depending on the prediction modes of reconstructed blocks. Simulation results show that the proposed method alleviates the distortion of the decoded pictures and thereby improves both subjective and objective quality compared with the HEVC standard.
- KSP Keywords
- HEVC standard, Intra prediction, Objective quality, Prediction mode, compressed video, error propagation, error resiliency, filtering process, high efficiency video coding, in-loop filtering, simulation results