Mesh-based motion estimation and compensation in the wavelet domain using a redundant transform

In this paper, a technique is presented that incorporates an irregular triangle mesh into wavelet-domain motion-estimation and motion-compensation using a shift-invariant redundant wavelet transform. Triangle vertices are identified by a simple correlation operator locating image edges in the wavelet subbands, while motion compensation takes place through an affine transformation mapping triangles from one frame to the next. The motioncompensated residual is downsampled to a non-redundant form which is then coded using any wavelet-based still-image coder. Experimental results indicate that the combined approach outperforms either technique applied separately; in addition, the proposed method outperforms a variety of motion-estimation and motion-compensation approaches operating in both the spatial and wavelet domains.

• Type: Conference
• Year: 2002
• Where: ICIP
• Authors: Suxia Cui, Yonghui Wang, James E. Fowler
• Keywords: ICIP 2002, Image Processing, Irregular Triangle Mesh, Redundant Wavelet Transform, Wavelet-based Still-image Coder