Virtual zero-tree wavelet transform coding of superhigh-definition images

Qi Wang; Mohammad Ghanbari

doi:10.1117/12.251282

16 September 1996 Virtual zero-tree wavelet transform coding of superhigh-definition images

Qi Wang, Mohammad Ghanbari

Proceedings Volume 2952, Digital Compression Technologies and Systems for Video Communications; (1996) https://doi.org/10.1117/12.251282
Event: Advanced Imaging and Network Technologies, 1996, Berlin, Germany

Abstract

A fully compatible and scalable coding scheme for super high definition images has been developed. Wavelet decomposition is performed such that the low frequency band is of CIF order, which forms a low-resolution core of the full sized video, and is coded by MPEG. The high frequency wavelet coefficients are coded by the proposed virtual zerotree which encodes the wavelets more efficiently than the simple zerotree. Embedded in the scheme is also the hierarchical motion compensation that gives high performance with a large capable compensation range, requires minimum computation, and reduces overhead motion information. With its scalability, data prioritization and precise bit-rate control, the scheme is suitable to code SHD video in multimedia applications.

Citation Download Citation

Qi Wang and Mohammad Ghanbari "Virtual zero-tree wavelet transform coding of superhigh-definition images", Proc. SPIE 2952, Digital Compression Technologies and Systems for Video Communications, (16 September 1996); https://doi.org/10.1117/12.251282

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