Multiple description wavelet based image coding

Multiple-Description Wavelet based Image Coding

We consider the problem of coding images for transmission over error-prone channels. The impairments we target are transient channel shutdowns, as would occur in a packet network when a packet is lost, or in a wireless system during a deep fade: when data is delivered it is assumed to be error-free, but some of the data may never reach the receiver. The proposed algorithms are based on a combin...

A multiple description method for wavelet based image coding

We propose a new multiple description method for wavelet transform coded images. The partitioning of the coefficients at the encoder is combined with concealment at the decoder to produce descriptions. An optimal concealment method for wavelet coefficients is derived based on statistical characteristics. Concealment in LL subband is treated differently and is based on its smoothness property. W...

Multiple Des ription Wavelet Based Image Coding

Wavelet-Based Multiple Description Coding of 3-D Geometry

In this work, we present a multiple description coding (MDC) scheme for reliable transmission of compressed three dimensional (3-D) meshes. It trades off reconstruction quality for error resilience to provide the best expected reconstruction of 3-D mesh at the decoder side. The proposed scheme is based on multiresolution geometry compression achieved by using wavelet transform and modified SPIH...

Optimal Multiple Description Wavelet Video Coding

We propose an optimal Multiple Description (MD) video coding technique with 3D-Set Partitioning in Hierarchical Tree (3D-SPIHT) algorithm. Multiple Description Coding (MDC) technique generates multiple bitstreams of the video content and has useful applications in packet video networks and error-prone networks. We describe a twodescription MDC system that embraces rate-distortion optimization t...