发明公开
EP1505837A1 Device and method for compressing digital images
有权
系统和Verfahren zur digitalen Bildkompression
- 专利标题： Device and method for compressing digital images
- 专利标题（中）： 系统和Verfahren zur digitalen Bildkompression
-
申请号： EP04077277.4申请日： 2004-07-30
-
公开(公告)号： EP1505837A1公开(公告)日： 2005-02-09
- 发明人: Thoreau, Dominique , Guillotel, Philippe , Bordes, Philippe , François, Edouard
- 申请人： Thomson Licensing S.A.
- 申请人地址： 46, quai A. Le Gallo 92100 Boulogne-Billancourt FR
- 专利权人： Thomson Licensing S.A.
- 当前专利权人： Thomson Licensing S.A.
- 当前专利权人地址： 46, quai A. Le Gallo 92100 Boulogne-Billancourt FR
- 代理机构： Ruellan-Lemonnier, Brigitte
- 优先权： FR0309713 20030807
- 主分类号： H04N7/26
- IPC分类号： H04N7/26
摘要：
The present invention relates to a device (210) for compressing a source image by means of a base layer, coding a base image, and of an enhancement layer, coding a residual existing between the source image and the base image, the source image and the base image being structured as blocks of pixels.
According to the invention, such a device is characterized in that it comprises means (250) for generating the enhancement layer of a block as a function of the quality of restitution of this block, determined by comparing the coding of this block in the source image with the coding of this block in the base image, and/or as a function of information coded by this block of pixels.
According to the invention, such a device is characterized in that it comprises means (250) for generating the enhancement layer of a block as a function of the quality of restitution of this block, determined by comparing the coding of this block in the source image with the coding of this block in the base image, and/or as a function of information coded by this block of pixels.
公开/授权文献
- EP1505837B1 Device and method for compressing digital images 公开/授权日：2018-04-04
信息查询
