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학술지 Motion-Vector Refinement for Video Error Concealment Using Downhill Simplex Approach
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저자
김도현, 권영진, 최경호
발행일
201804
출처
ETRI Journal, v.40 no.2, pp.266-274
ISSN
1225-6463
출판사
한국전자통신연구원 (ETRI)
DOI
https://dx.doi.org/10.4218/etrij.2017-0078
협약과제
17ZS1600, 스마트자동차를 위한 첨단 디지털 Cockpit 시스템 개발, 김도현
초록
In error-prone wireless environments, it is difficult to혻realize video coding systems that are robust to various types of data loss. In this paper, a novel motion-vector refinement approach is presented for video error concealment. A traditional boundary-matching approach is exploited to reduce blocky effects along the block boundary. More specifically, a downhill simplex approach is combined with a boundary-matching approach to fine-tune the motion vectors, reducing the blocky effects along the prediction unit block boundary, and minimizing the computational cost. Extensive simulations are performed, and the results obtained verify the robustness and effectiveness of the proposed approach.
KSP 제안 키워드
Coding system, Data loss, Downhill simplex, Matching approach, Motion Vector(MV), Video coding, Video error concealment, computational cost, prediction unit
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