发明公开
EP0735778A3 Method for processing a colour signal 失效
彩色信号处理方法

  • 专利标题: Method for processing a colour signal
  • 专利标题(中): 彩色信号处理方法
  • 申请号: EP96301850
    申请日: 1996-03-19
  • 公开(公告)号: EP0735778A3
    公开(公告)日: 1998-10-14
  • 发明人: EDGAR ALBERT DURR
  • 申请人: IBM
  • 专利权人: IBM
  • 当前专利权人: IBM
  • 优先权: US41333995 1995-03-30
  • 主分类号: H04N9/07
  • IPC分类号: H04N9/07 H04N9/04 H04N9/077
Method for processing a colour signal
摘要:
An image is captured into a video signal comprised of individual pixels by means of an array sensor with color stripes. When processing the signal from the sensor, the system first interprets the highest frequencies of the signal as an upper sideband of the I color component in such a way that doubles the recoverable bandwidth of color detail. From the upper sideband of the signal, the corresponding lower color sideband is predicted and its effect is then subtracted from the luminance component, from which, in turn, an image is generated. The resulting image thereby produced is thus enhanced in sharpness while at the same time exhibiting a reduction in artifacts. Preferably color is demodulated from such a striped array sensor signal wherein the step is included of demodulating the predominant I color vector from the color carrier utilizing an asymmetric sideband filter.
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