发明授权
US5453845A Apparatus for providing variable gamma correction in both on-line and
off-line modes of operation
失效
用于在在线和离线操作模式下提供可变伽马校正的装置
- 专利标题： Apparatus for providing variable gamma correction in both on-line and off-line modes of operation
- 专利标题（中）： 用于在在线和离线操作模式下提供可变伽马校正的装置
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申请号： US235132申请日： 1994-04-28
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公开(公告)号： US5453845A公开(公告)日： 1995-09-26
- 发明人: Hiroshi Nonoshita , Kenjiro Cho , Seiji Saito , Yasuhisa Shigehara
- 申请人： Hiroshi Nonoshita , Kenjiro Cho , Seiji Saito , Yasuhisa Shigehara
- 申请人地址： JPX Tokyo
- 专利权人： Canon Kabushiki Kaisha
- 当前专利权人： Canon Kabushiki Kaisha
- 当前专利权人地址： JPX Tokyo
- 优先权： JPX61-255104 19861027; JPX61-255122 19861027
- 主分类号： H04N1/407
- IPC分类号： H04N1/407 ; H04N1/40
摘要：
An image processing apparatus is disclosed which includes circuitry for selectively applying variable gamma corrections to an image signal during both on-line and off-line modes of operation. In the off-line mode, the apparatus operates to simultaneously correct image signals for non-linearities produced by both an input device and an output device. In the on-line mode, correction is made for the non-linearities of the input device and a separate correction is made for the non-linearities of the output device. Such operation allows the apparatus to process linear data in the on-line mode.
公开/授权文献
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