发明名称 |
QUANTIZATION ADJUSTMENT BASED ON TEXTURE LEVEL |
摘要 |
A video encoder identifies a current smooth region of a current picture in a sequence and performs temporal analysis by determining whether a corresponding region 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. An encoder determines a differential quantization interval for a sequence, the interval comprising an interval number. The interval constrains the encoder to skip differential quantization for at least the interval number of predicted pictures after a predicted differentially quantized picture. An encoder analyzes texture in a current picture and sets a smoothness threshold. The encoder compares texture data with the smoothness threshold and adjusts differential quantization for at least part of the current picture based on a finding of at least one smooth region in the current picture according to the smoothness threshold. |
申请公布号 |
EP2005754(A4) |
申请公布日期 |
2014.01.22 |
申请号 |
EP20070755268 |
申请日期 |
2007.04.09 |
申请人 |
MICROSOFT CORPORATION |
发明人 |
ZUO, XIPING;LIN, CHIH-LUNG |
分类号 |
H04N7/24;H04N7/26;H04N7/50 |
主分类号 |
H04N7/24 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|