A CODING SCHEME USING GLOBAL MOTION ESTIMATION FOR AVS P-FRAME

作     者：Gong Shengrong Guo Li Cui Zhiming 

作者机构：School of Computer Science and Technology Soochow University Suzhou 215006 China 

基　　金：Supported by the National Natural Science Foundation of China (60673092) Natural science Foundation of Ji-angsu Province (No.BK2003029) the Key Laboratory Project of Information Science & Engineering of Railway of the Ministry of Railways, China (No.TDXX0501) 

出 版 物：《Journal of Electronics(China)》 (电子科学学刊（英文版）)

年 卷 期：2007年第24卷第6期

页      码：815-820页

摘      要：Block matching has been used for motion estimation and motion compensation in the Au- dio and Video Standard (AVS) for years. While having an acceptable performance in describing mo- tion between frames, it requires quite a few bits to represent the motion vectors. In certain circum- stances, the use of global motion estimation and compensation would perform equally well or even better than the block matching in terms of motion accuracy, while it results in the coding of global motion model parameters. In this letter, we modify an AVS coder by adding (1) six global motion model parameters to the frame header, and (2) mode selection among INTRA, SKIP, INTER-16×16, INTER-16×8, INTER-8×16, INTER-8×8, and Global Motion Compensation (GMC) modes by La- grange optimal rate-distortion criteria. Simulation results demonstrate that over 0.1dB improvement in PSNR is obtained compared to the AVS coder for an average coded P-frame with the same bit- rate.

主 题 词：计算机技术 设计方案 通信技术 网络 

学科分类：0808[工学-自动化类] 0809[工学-计算机类] 081203[081203] 08[工学] 0835[0835] 0812[工学-测绘类] 

D　O　I：10.1007/s11767-006-0231-1

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