An algorithm for transform coding for lossy packet networks
نویسندگان
چکیده
We propose an algorithm to compute a modification of the classical discrete Karhunen-Loeve Transform (KLT) useful when some of the coefficients are randomly unavailable for reconstruction. Such a scheme can provide Multiple Description Coding (MDC) for signals and images transported by lossy packet links. The modification of the KLT is based on a “correlating” block that, from knowledge of the channel erasure statistics, is optimized with a gradient algorithm to provide minimum average reconstruction error. A set of simulations show appreciable improvements over standard schemes. 1. TRANSFORM CODING WITH ERASURES
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