基于運動矢量插值的運動補償算法
A NEW MOTION COMPENSATION ALGORITHM USING MOTION VECTOR INTERPOLATION
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摘要: 本文首先研究了相關(guān)性約束運動估值算法,然后提出了基于運動矢量插值的運動估值算法,實驗表明新算法的預(yù)測性能明顯比傳統(tǒng)塊匹配運動估值算法(BMA)好,而且預(yù)測圖象的主觀質(zhì)量得到顯著改善。
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關(guān)鍵詞:
- 運動估值; 運動補償; 視頻編碼
Abstract: In this paper, a modified Block Matching Algorithm(BMA) with motion correlation constraint is proposed at first. Then a novel motion estimation algorithm, which computes motion vector for each pixel by interpolating motion vectors is presented. In order to increase inter-frame prediction gain and decrease the computational complexity, a motion vector optimizing algorithm for local image region is described at last. Experimental results show that the proposed algorithm can improve the prediction performance obviously with a moderate increased complexity compared with the conventional BMA. -
CCITT Recommendation H.261. Video codec for audiovisual services at p x 64 Kbits/s. Geneva: 1990.[2]MPEG. ISO CD11172.2: Coding of moving pictures and associated audio for digital storage media at up to about 1.5 Mbits/s, Nov. 1991.[3]Jain J R, Jain A K. Displacement measure and its application in interframe image coding. IEEE Trans. on Comm. 1981, COM-29(12):1799-1806.[4]Yuichiro Nakaya, Hiroshi Harashima. Motion compensation based on spatial transformations. IEEE Trans, on CAS VT, 4(3): 1994, 339-356. -
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