发明授权
- 专利标题: Systems and methods for moiré-reduced halftoning
- 专利标题(中): 用于莫尔减半色调的系统和方法
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申请号: US09329265申请日: 1999-06-28
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公开(公告)号: US06717696B1公开(公告)日: 2004-04-06
- 发明人: Shen-ge Wang , Zhigang Fan
- 申请人: Shen-ge Wang , Zhigang Fan
- 主分类号: G06F1500
- IPC分类号: G06F1500
摘要:
By using negative feedback, moiré patterns can be reduced, or virtually eliminated, from input black-and-white or color original images. In particular, by feeding back an image containing the difference between the original input image and the halftone output with possible moiré patterns, and subtracting the low-frequency part of this image from the original input image, a resultant halftone image can be achieved that has reduced moiré patterns.
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