Distributed Source Coding using Prediction Modes Obtained from Side Information

摘要

In a decoder, a desired image is estimated by first retrieving coding modes from an encoded side information image. For each bitplane in the encoded side information image, syndrome bits or parity bits are decoded to obtain an estimated bitplane of quantized transform coefficients of the desired image. A quantization and a transform are applied to a prediction residual obtained using the coding modes, wherein the decoding uses the quantized transform coefficients of the encoded side information image. The estimated bitplanes of quantized transform coefficients of the desired image are combined to produce combined bitplanes. Then, an inverse quantization, an inverse transform and a prediction based on the coding modes are applied to the combined bitplanes to recover the estimate of the desired image.

主权项

1. A method for estimating a desired image, comprising:
retrieving coding modes from an encoded side information image; decoding, for each bitplane in the encoded side information image, syndrome bits or parity bits to obtain an estimated bitplane of quantized transform coefficients of the desired image, wherein a quantization and a transform are applied to a prediction residual obtained using the coding modes, wherein the decoding uses the quantized transform coefficients of the encoded side information image; combining the estimated bitplanes of quantized transform coefficients of the to desired image to produce combined bitplanes; and applying an inverse quantization, an inverse transform, and a prediction based on the coding modes to the combined bitplanes to recover the estimate of the desired image, wherein the steps are performed in a decoder.