QUANTIZATION ADJUSTMENT BASED ON TEXTURE LEVEL

专利名称：QUANTIZATION ADJUSTMENT BASED ON

TEXTURE LEVEL

发明人：Xiping Zuo,Chih-Lung Lin申请号：US13172607申请日：20110629

公开号：US20110255595A1公开日：20111020

专利附图：

摘要：A video encoder identifies a current smooth region of a current picture in asequence and performs temporal analysis by determining whether a correspondingregion in at least one previous and/or future picture is smooth. Based at least in part on

the temporal analysis, the encoder adjusts quantization in the current smooth region. Anencoder determines a differential quantization interval for a sequence, the intervalcomprising an interval number. The interval constrains the encoder to skip differentialquantization for at least the interval number of predicted pictures after a predicteddifferentially quantized picture. An encoder analyzes texture in a current picture and setsa smoothness threshold. The encoder compares texture data with the smoothnessthreshold and adjusts differential quantization for at least part of the current picturebased on a finding of at least one smooth region in the current picture according to thesmoothness threshold.

申请人：Xiping Zuo,Chih-Lung Lin

地址：Kirkland WA US,Redmond WA US

国籍：US,US

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