发明申请
- 专利标题: ESTIMATING AN AMOUNT OF COLOR CONTENT IN A DOCUMENT
- 专利标题(中): 估计文件中的颜色内容数量
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申请号: US12026018申请日: 2008-02-05
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公开(公告)号: US20090195801A1公开(公告)日: 2009-08-06
- 发明人: Amal Zaka MALIK , Xing Li , Ramesh Nagarajan
- 申请人: Amal Zaka MALIK , Xing Li , Ramesh Nagarajan
- 申请人地址: US CT Norwalk
- 专利权人: Xerox Corporation
- 当前专利权人: Xerox Corporation
- 当前专利权人地址: US CT Norwalk
- 主分类号: H04N1/50
- IPC分类号: H04N1/50
摘要:
What is provided herein is a novel system and method for estimating the amount of color in a document. In one embodiment, a binary CMYK input image is received. Each of the CMYK plane is received at an offset from the previous plane, i.e., the 4 planes are not received simultaneously. Each plane is divided into M×N tiles. Pixel values of all four planes are examined separately and the number of on-pixels is counted for each plane. The number of on-pixel counts for each tile are aggregated for each plane. Total on-pixel counts are used to estimate the total number of white, black, color, and gray pixel counts. The total counts for all planes are used to estimate the amount of color. A document is determined to be color if the amount of color exceeds a predetermined threshold. A color billing strategy is determined based on the estimated color amount.
公开/授权文献
- US07907305B2 Estimating an amount of color content in a document 公开/授权日:2011-03-15