Estimator for estimating a probability distribution of a quantization index
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United States of America Patent
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May 26, 2015
Grant Date -
Jul 10, 2014
app pub date -
Feb 21, 2014
filing date -
Aug 23, 2011
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Abstract
The invention relates to an estimator for estimating a probability distribution of a quantization index generated from a source coder encoding a source signal, into a sequence of quantization indices, the source signal being described by a signal model, the source coder providing a current quantization index and current side information, the estimator being configured to obtain auxiliary parameters based on a configuration of the source coder and the current available side information and the signal model, the estimator being further configured to adaptively update the probability distribution of a quantization index upon the basis of a probability density function relating to a previous state of the estimator, the auxiliary parameters, the current quantization index and the current side information.
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