发明授权
US06266102B1 Image display method, gradation conversion circuit, and image signal conversion apparatus 失效
图像显示方法,灰度转换电路和图像信号转换装置

  • 专利标题: Image display method, gradation conversion circuit, and image signal conversion apparatus
  • 专利标题(中): 图像显示方法,灰度转换电路和图像信号转换装置
  • 申请号: US08723877
    申请日: 1996-09-23
  • 公开(公告)号: US06266102B1
    公开(公告)日: 2001-07-24
  • 发明人: Takeo AzumaAtsushi Morimura
  • 申请人: Takeo AzumaAtsushi Morimura
  • 优先权: JP7-245714 19950925; JP7-307058 19951127
  • 主分类号: H04N514
  • IPC分类号: H04N514
Image display method, gradation conversion circuit, and image signal conversion apparatus
摘要:
An image display method displays an image by different gradation conversion in every pixel, on the basis of gradation frequency distribution of luminance of pixels near an edge of the image, and counting of gradation frequency of luminance of pixels near the edge is weighted depending on the coordinate values of each pixel so as to eliminate relative contrast drop in the image central part from the image peripheral parts.
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