English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

Some state-of-art multimedia source encoders produce embedded source bitstreams that upon the reliable reception of only a fraction of the total bitstream, the decoder is able reconstruct the source up to a basic quality.Reliable reception of later source bits gradually improve the reconstructionquality. Examples include scalable extensions of H.264/AVC and progressiveimage coders such as JPEG2000. To provide an efficient protection for embeddedsource bit streams, a concatenated block coding scheme using a minimum meandistortion criterion was considered in the past. Although, the original designwas shown to achieve better mean distortion characteristics than previousstudies, the proposed coding structure was leading to dramatic qualityfluctuations. In this paper, a modification of the original design is firstpresented and then the second order statistics of the distortion is taken intoaccount in the optimization. More specifically, an extension scheme is proposedusing a minimum distortion variance optimization criterion. This robust systemdesign is tested for an image transmission scenario. Numerical results showthat the proposed extension achieves significantly lower variance than theoriginal design, while showing similar mean distortion performance using bothconvolutional codes and low density parity check codes.

Minimum Distortion Variance Concatenated Block Codes for Embedded Source Transmission