Wyner-Ziv coding of video with unsupervised motion vector learning
Image Communication
A channel coding approach for human authentication from gait sequences
IEEE Transactions on Information Forensics and Security
PCS'09 Proceedings of the 27th conference on Picture Coding Symposium
Successive refinement based Wyner-Ziv video compression
Image Communication
Biometric template protection in multimodal authentication systems based on error correcting codes
Journal of Computer Security - EU-Funded ICT Research on Trust and Security
Robust distributed multiview video compression for wireless camera networks
IEEE Transactions on Image Processing
Secure image authentication by distibuted source coding using LDPC encoding
Proceedings of the Second International Conference on Computational Science, Engineering and Information Technology
Hi-index | 0.00 |
Distributed compression is particularly attractive for stereo images since it avoids communication between cameras. Since compression performance depends on exploiting the redundancy between images, knowing the disparity is important at the decoder. Unfortunately, distributed encoders cannot calculate this disparity and communicate it. We consider the compression of grayscale stereo images, and develop an Expectation Maximization algorithm to perform unsupervised learning of disparity during the decoding procedure. Towards this, we devise a novel method for joint bitplane distributed source coding of grayscale images. Our experiments with both natural and synthetic 8-bit images show that the unsupervised disparity learning algorithm outperforms a system which does no disparity compensation by between 1 and more than 3 bits/pixel and performs nearly as well as a system which knows the disparity through an oracle.