Yu, A. C., Park, H. and Martin, G. R.. (2007) Dual-layer approach for improved mesh-based motion compensation. IET Image Processing, Vol.1 (No.4). pp. 343-351. ISSN 1751-9659

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Abstract

A dual-layer algorithm for mesh-based motion compensation is described. The technique utilises meshes at different scales and aims to improve the rate-distortion performance at fixed bit rates. The proposed algorithm identifies motion-active regions in the picture without the need for time-consuming, evaluation. By enhancing the mesh structure in the motion-active regions, a significant improvement in motion estimation is obtained. Furthermore, a scheme to construct two different significance maps, at both encoder and decoder, provides a reduction in transmission overhead. A block-wise motion information coding approach is proposed, permitting a group of static grid points to be represented by a one-bit codeword. Simulations are reported for a wide range of test sequences possessing different degrees of motion activity. The results demonstrate that the proposed algorithm achieves a better PSNR-rate performance compared with conventional mesh-based motion compensation methods.

Item Type:	Journal Article
Subjects:	T Technology > TK Electrical engineering. Electronics Nuclear engineering
Divisions:	Faculty of Science > Computer Science
Journal or Publication Title:	IET Image Processing
Publisher:	The Institution of Engineering and Technology
ISSN:	1751-9659
Date:	December 2007
Volume:	Vol.1
Number:	No.4
Number of Pages:	9
Page Range:	pp. 343-351
Identification Number:	10.1049/iet-ipr:20060322
Status:	Peer Reviewed
Publication Status:	Published
Access rights to Published version:	Restricted or Subscription Access
URI:	http://wrap.warwick.ac.uk/id/eprint/30714

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