Invention Grant
US08482793B2 Memory efficient electronic registration method that compensates image content and prevents halftone moiré
有权
内存高效的电子注册方法,可补偿图像内容并防止半色调莫尔
- Patent Title: Memory efficient electronic registration method that compensates image content and prevents halftone moiré
- Patent Title (中): 内存高效的电子注册方法,可补偿图像内容并防止半色调莫尔
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Application No.: US12644081Application Date: 2009-12-22
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Publication No.: US08482793B2Publication Date: 2013-07-09
- Inventor: Beilei Xu , Robert P. Loce , Joseph C. Sheflin , Daniel W. Costanza
- Applicant: Beilei Xu , Robert P. Loce , Joseph C. Sheflin , Daniel W. Costanza
- Applicant Address: US CT Norwalk
- Assignee: Xerox Corporation
- Current Assignee: Xerox Corporation
- Current Assignee Address: US CT Norwalk
- Agency: Fay Sharpe LLP
- Main IPC: G06F15/00
- IPC: G06F15/00

Abstract:
Systems and methods are described that facilitate compensating for slow scan direction displacement (e.g., skew and/or bow) defects in a raster line using slow-scan electronic registration. Input image data is buffered at low-resolution (e.g., 600 spi or the like). Displacement compensation is performed as the low-resolution contone image data is converted to high-resolution (e.g., 2400 spi or the like), and a displaced (e.g., staggered) halftoning threshold array is indexed to account for detected displacement. Displacement compensation is again performed during conversion of the high-resolution contone image data to high-resolution binary image data that is used to generate an output image.
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