APPARATUSES AND METHODS FOR REDUCING RATE AND DISTORTION COSTS DURING ENCODING BY MODULATING A LAGRANGIAN PARAMETER
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United States of America Patent
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Issued Date -
Mar 26, 2015
app pub date -
Sep 25, 2013
filing date -
Sep 25, 2013
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Abandoned
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Abstract
Examples of apparatuses and methods for reducing rate and distortion costs during encoding by modulating a Lagrangian parameter are described herein. An example apparatus may include an encoder configured to provide an encoded bitstream based on a video signal. The encoder is configured to determine first rate and distortion values associated with a first quantization strength and a first Lagrangian parameter value for encoding a coding unit of the video signal. The encoder is further configured to select a second quantization strength and a second Lagrangian parameter value for encoding the coding unit that results in second rate and distortion values that are lower than the first rate and distortion values.
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