Improvement of region-based motion estimation by considering uncovered regions

被引：7
|
作者：
Wang, DM [1 ]
机构：
[1] Commun Res Ctr, Ottawa, ON K2H 8S2, Canada
来源：
SIGNAL PROCESSING-IMAGE COMMUNICATION | 1999年 / 14卷 / 10期
关键词：
motion estimation; video coding; object-based video coding; image segmentation;
D O I：
10.1016/S0923-5965(98)00047-2
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
In natural video sequences, object movement causes regions to be covered or uncovered. Conventional algorithms for region-based motion estimation do not take uncovered regions into full account. Uncovered regions seriously decrease the accuracy of motion estimation. This paper presents an algorithm for increasing the motion estimation accuracy. This algorithm detects uncovered regions and uses them to improve image segmentation and motion estimation. Experimental results show that the presented algorithm is effective in reducing the displaced frame difference, without introducing any extra information for coding applications. (C) 1999 Elsevier Science B.V. All rights reserved.
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页码：841 / 849
页数：9
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