Symmetric Disparity Estimation in Distributed Coding of Stereo Images

Disparity estimation has been widely studied in the literature of stereo matching and coding. However, how to shift disparity estimation from encoder to decoder to support distributed coding applications poses a new challenge. In this paper, we present a symmetric distributed coding protocol in which interlaced representations of stereo pair are finely and coarsely quantized as primary and secondary channels respectively. At the decoder, side information is generated from the primary channel by an expectation maximization (EM)-like algorithm and a novel dual exploitation of the secondary channel is proposed to simultaneously resolve intensity uncertainty and refine disparity estimation. Preliminary experimental results for synthetic images are reported to demonstrate the potential of the proposed approach.

[1]  Jian Sun,et al.  Symmetric stereo matching for occlusion handling , 2005, 2005 IEEE Computer Society Conference on Computer Vision and Pattern Recognition (CVPR'05).

[2]  Yiannis Aloimonos,et al.  A Roadmap to the Integration of Early Visual Modules , 2007, International Journal of Computer Vision.

[3]  Kannan Ramchandran,et al.  Distributed compression in a dense microsensor network , 2002, IEEE Signal Process. Mag..

[4]  Monson H. Hayes,et al.  Stereo image coding: a projection approach , 1998, IEEE Trans. Image Process..

[5]  Xin Li Distributed coding of multispectral images: a set theoretic approach , 2004, 2004 International Conference on Image Processing, 2004. ICIP '04..

[6]  Zixiang Xiong,et al.  A distributed source coding technique for correlated images using turbo-codes , 2002, IEEE Communications Letters.

[7]  Zixiang Xiong,et al.  High performance wavelet-based stereo image coding , 2002, 2002 IEEE International Symposium on Circuits and Systems. Proceedings (Cat. No.02CH37353).

[8]  Robert D. Nowak,et al.  Distributed image compression for sensor networks using correspondence analysis and super-resolution , 2003, Proceedings 2003 International Conference on Image Processing (Cat. No.03CH37429).

[9]  Antonio Ortega,et al.  Overlapped block disparity compensation with adaptive windows for stereo image coding , 2000, IEEE Trans. Circuits Syst. Video Technol..

[10]  Hayder Radha,et al.  Disparity dependent segmentation based stereo image coding , 2003, Proceedings 2003 International Conference on Image Processing (Cat. No.03CH37429).

[11]  Richard Szeliski,et al.  A Taxonomy and Evaluation of Dense Two-Frame Stereo Correspondence Algorithms , 2001, International Journal of Computer Vision.

[12]  Jack K. Wolf,et al.  Noiseless coding of correlated information sources , 1973, IEEE Trans. Inf. Theory.

[13]  Bernd Girod,et al.  Distributed Video Coding , 2005, Proceedings of the IEEE.