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학술지 Constrained In-Loop Filtering for Error Resiliency in High Efficiency Video Coding
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저자
이진호, 김휘용, 임성창, 최진수
발행일
201304
출처
Optical Engineering, v.52 no.7, pp.1-8
ISSN
0091-3286
출판사
SPIE
DOI
https://dx.doi.org/10.1117/1.OE.52.7.071507
협약과제
12PR1600, 무안경 다시점 3D지원 UHDTV 방송 기술 개발, 김진웅
초록
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.
키워드
Constrained intra-prediction, Error resiliency, High efficiency video coding, Video coding
KSP 제안 키워드
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