发明授权
- 专利标题： Image processing apparatus and method
- 专利标题（中）： 图像处理装置及方法
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申请号： US08807606申请日： 1997-02-27
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公开(公告)号： US06333788B1公开(公告)日： 2001-12-25
- 发明人: Osamu Yamada , Takeshi Makita , Kazuhiro Saito , Hiroshi Mori
- 申请人： Osamu Yamada , Takeshi Makita , Kazuhiro Saito , Hiroshi Mori
- 优先权： JP8-041637 19960228; JP8-041638 19960228
- 主分类号： G06F1500
- IPC分类号： G06F1500
摘要：
The luminance frequencies are calculated in units of blocks in a multi-valued image, and the binarization threshold values in units of blocks are calculated on the basis of the calculated luminance frequencies. By interpolating the binarization threshold values in units of blocks, the binarization threshold values in units of pixels are calculated, and the multi-valued image is binarized using the binarization threshold values in units of pixels.
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