发明授权
US06747694B1 Television signal processor for generating video signal of wide dynamic range, television camera using the same, and method for television signal processing
失效
用于生成宽动态范围的视频信号的电视信号处理器，使用该视频信号的电视摄像机以及用于电视信号处理的方法
- 专利标题： Television signal processor for generating video signal of wide dynamic range, television camera using the same, and method for television signal processing
- 专利标题（中）： 用于生成宽动态范围的视频信号的电视信号处理器，使用该视频信号的电视摄像机以及用于电视信号处理的方法
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申请号： US09588078申请日： 2000-06-06
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公开(公告)号： US06747694B1公开(公告)日： 2004-06-08
- 发明人: Hiroyuki Nishikawa , Akira Fukushima
- 申请人： Hiroyuki Nishikawa , Akira Fukushima
- 优先权： JP11-159791 19990607; JP11-271236 19990924; JP11-271237 19990924; JP11-271238 19990924; JP11-271239 19990924
- 主分类号： H04N5235
- IPC分类号： H04N5235
摘要：
A television signal processor generates a wide dynamic range video signal on the basis of a first video signal matched to the brightness of a low-brightness region of an object image, and a second video signal matched to the brightness of a high-brightness region of the object image, and adjusting means for subjecting the first and second video signals individually to white balance process. The television signal processor further has means for detecting histogram values of particular signal level regions of the second video signal, means for detecting the peak value of the second video signal, means for determining a combining ratio of the first and second video signals according to the detected peak value and combining ratio, nonlinear processing means for nonlinear-processing the first video signal according to the detected histogram value, and combining means for combining the nonlinear-processed first and second video signals at a predetermined combining ratio.
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