Method for determining color difference component quantization parameter and device using the method
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United States of America Patent
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Aug 7, 2018
Grant Date -
Nov 9, 2017
app pub date -
Jul 21, 2017
filing date -
Mar 3, 2011
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Abstract
Disclosed are a method for determining a color difference component quantization parameter and a device using the method. Method for decoding an image can comprise the steps of: decoding a color difference component quantization parameter offset on the basis of size information of a transform unit; and calculating a color difference component quantization parameter index on the basis of the decoded color difference component quantization parameter offset. Therefore, the present invention enables effective quantization by applying different color difference component quantization parameters according to the size of the transform unit when executing the quantization.
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