| An Object-Based Fast Motion Estimation Algorithm in MPEG-4 |
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| 作者姓名： | 孙雷 张文军 余松煜 刘勋 |
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| 作者单位： | Inst. of Image Communication ＆ Information Processing, Shanghai Jiaotong Univ. , Shanghai 200030, China |
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| 基金项目： | National High Technology Research and De-velopment Program of China (863 Program)(No.2003AA103810) |
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| 摘 要： | Introduction The MPEG has successfully developed theMPEG-4 standard1]to address a wide range ofmultimedia data compression applications. As oneof the major parts of MPEG-4 standard, MPEG-4video aims at providing standardized core technolo-gies allowing efficient storage, transmission andmanipulation of video data in multimedia environ-ments2]. Compared with its predecessor, MPEG-4 em-ploys many new compression techniques3]. One ofthe main new features of MPEG-4 is its ability tore…
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| 关 键 词： | MPEG 4 运动估计 视频对象 图象编码 |
| 文章编号： | 1007-1172（2006）03-0340-06 |
| 收稿时间： | 2004-09-27 |
An Object-Based Fast Motion Estimation Algorithm in MPEG-4 |
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| SUN Lei,ZHANG Wen-jun,YU Song-yu,LIU Xun.An Object-Based Fast Motion Estimation Algorithm in MPEG-4[J].Journal of Shanghai Jiaotong university,2006,11(3):340-345. |
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| Authors: | SUN Lei ZHANG Wen-jun YU Song-yu LIU Xun |
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| Abstract: | This paper presented an object-based fast motion estimation (ME) algorithm for object-based texture coding in moving picture experts group four (MPEG-4), which takes full advantage of the shape information of video object. Compared with the full search (FS) algorithm, the proposed algorithm can significantly speed the ME process. The speed of ME using the proposed algorithm is faster than that using new three-step search (NTSS), four-step search (4SS), diamond search (DS), and block-based gradient descent search (BBGDS) algorithms with similar motion compensation (MC) errors. The proposed algorithm can be combined with other fast ME algorithm to make the ME process faster. |
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| Keywords: | MPEG-4 motion estimation video object |
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