发明授权
US06707951B1 Halftone dot image discrimination method and image processing device
有权
半色调点图像识别方法和图像处理装置
- 专利标题： Halftone dot image discrimination method and image processing device
- 专利标题（中）： 半色调点图像识别方法和图像处理装置
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申请号： US09369176申请日： 1999-08-05
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公开(公告)号： US06707951B1公开(公告)日： 2004-03-16
- 发明人: Hiroyuki Suzuki , Kenichi Sawada , Atsushi Ishikawa
- 申请人： Hiroyuki Suzuki , Kenichi Sawada , Atsushi Ishikawa
- 优先权： JP10-221296 19980805
- 主分类号： G06K936
- IPC分类号： G06K936
摘要：
A device and a method for detecting isolated points in image data by the application of an isolated point detection filter, and discriminating whether or not the image data are a halftone dot image by the number of isolated point detected within a predetermined area. The size of the isolated points is reduced so as to be smaller than the isolated point detection filter by culling the image. In this way isolated points can be detected using the same isolated point detection filter regardless of the resolution of the image data.