专利检索 ap:("Dolby International AB" OR "Dolby Laboratories Licensing Corporation") AND inv:"KOWALIK, Uwe Michael" 第 1 页

1.

发明公开
PREDICTIVE IMAGE ENCODING AND DECODING WITH PIXEL GROUP BASED QUANTIZATION 审中-公开
标题翻译：基于像素群的量化预测图像编码和解码

公开(公告)号：EP3251351A1

公开(公告)日：2017-12-06

申请号：EP16708484.7

申请日：2016-01-25

申请人： Dolby International AB , Dolby Laboratories Licensing Corporation

发明人： SCHUEUER, Klaas Heinrich , KOWALIK, Uwe Michael , NEDDENS, Arion , KRAETZER, Philipp , SU, Guan-Ming

IPC分类号： H04N19/119 , H04N19/124 , H04N19/34 , H04N19/172 , H04N19/17 , H04N19/187 , H04N19/463 , H04N19/136

CPC分类号： H04N19/34 , H04N19/119 , H04N19/124 , H04N19/136 , H04N19/17 , H04N19/172 , H04N19/186 , H04N19/187 , H04N19/197 , H04N19/46 , H04N19/463 , H04N19/98

摘要： The present invention relates generally to images. More particularly, an embodiment of the present invention relates to the pixel group segmented quantization and de-quantization of the residual signal in layered coding of high dynamic range images. By assigning the pixels in the residual image to different pixel groups based on the pixel value of the corresponding pixel in the decoded base layer signal, and by applying pixel group quantizing functions to assigned pixels a more efficient coding can be achieved.