Video Compression using Wyner-Ziv Codes

Predictive coding is posed as a variant of the Wyner-Ziv coding, and problems in source and channel coding of video are addressed in this framework.

Compression of Image-based Rendering Data

The design of compression techniques for streaming of image-based rendering data to remote viewers. A compression algorithm based on the use of Wyner-Ziv codes is proposed, which satisfies the key constraints for IBR streaming, namely those of random access for interactivity, and pre-compression. In the present work, we consider the design of compression techniques for streaming of IBR data to remote viewers. The key constraints that a compression algorithm for IBR streaming is required to satisfy, are those of random access for interactivity, and precompression. We propose a compression algorithm based on the use of coset codes for this purpose. The proposed algorithm employs H.264 source compression in conjunction with LDPC coset codes to precompress the IBR data. Appropriate coset information is transmitted to the remote viewers to allow interactive view generation. Results indicate that the proposed compression algorithm provides good compression efficiency, while allowing client interactivity and server precompression.

Related Publications:

• A. Jagmohan, A. Sehgal, N. Ahuja, Compression of Light-field Rendering Data using Coset Codes, Proc. Asilomar Conf. on Sig., Syst., and Comp., 2003.