Method and apparatus for adaptively encoding and decoding a quantization parameter based on a quadtree structure
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United States of America Patent
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Jan 16, 2018
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app pub date -
Jul 31, 2015
filing date -
Jun 21, 2011
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Abstract
Disclosed are an apparatus and a method of encoding/decoding a video, particularly a method and an apparatus for storing a quantization parameter differential value in a largest coding unit (LCU) based on quadtree splitting and adaptively predicting a quantization parameter value based on context information on neighboring CUs. Quadtree-based quantization parameter encoding and decoding methods and apparatuses effectively show information on a block having a quantization parameter differential value based on splitting information on a CU and adaptively predict a quantization parameter value using context information including a block size, block partition and a quantization parameter of a neighboring CU.
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