发明授权
US5802214A Method for determining and loading an image-dependent look-up table for
generating an enhanced image representation
失效
用于确定和加载用于生成增强图像表示的图像相关查找表的方法
- 专利标题: Method for determining and loading an image-dependent look-up table for generating an enhanced image representation
- 专利标题(中): 用于确定和加载用于生成增强图像表示的图像相关查找表的方法
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申请号: US569808申请日: 1995-12-08
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公开(公告)号: US5802214A公开(公告)日: 1998-09-01
- 发明人: Reiner Eschbach , William A. Fuss , Charles M. Hains
- 申请人: Reiner Eschbach , William A. Fuss , Charles M. Hains
- 申请人地址: CT Stamford
- 专利权人: Xerox Corporation
- 当前专利权人: Xerox Corporation
- 当前专利权人地址: CT Stamford
- 主分类号: H04N1/409
- IPC分类号: H04N1/409 ; G06T5/00 ; H04N1/407 ; H04N1/60 ; G06K9/40
摘要:
A scanner generates a first set of M-bit signals representing an image in a document. A default table translates the M-bit signals into linearized N-bit signals where M>N. A color image processing module processes the N-bit signals to generate an image-dependent look-up table which, thereafter, is loaded into the scanner. The scanner then generates a second set of M-bit signals using a high resolution re-scan of the same image. The second set of M-bit signals are translated into N-bit signals using the image-dependent look-up table to generate an electronic representation with enhancement characteristics.
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