发明授权
- 专利标题: Anisotropic stochastic screen
- 专利标题(中): 各向异性屏幕
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申请号: US10285716申请日: 2002-10-31
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公开(公告)号: US07139101B2公开(公告)日: 2006-11-21
- 发明人: Robert P. Loce , Beilei Xu , Shen-ge Wang
- 申请人: Robert P. Loce , Beilei Xu , Shen-ge Wang
- 申请人地址: US CT Stamford
- 专利权人: Xerox Corporation
- 当前专利权人: Xerox Corporation
- 当前专利权人地址: US CT Stamford
- 主分类号: H04N1/405
- IPC分类号: H04N1/405 ; H04N1/409
摘要:
A system and method for the halftoning of gray scale images by utilizing a pixel-by-pixel comparison of the image against an anisotropic stochastic screen is disclosed. The anisotropic stochastic screen comprises a non-deterministic, non-white noise function which, when thresholded, is designed to produce anisotropic dot patterns having a power spectrum characterized as having negligible low frequency components and a high-frequency region which has an absence of stronger dominant spikes.
公开/授权文献
- US20040085588A1 Anisotropic stochastic screen 公开/授权日:2004-05-06
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