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US07853074B2 Multi-color dropout for scanned document 有权
扫描文档的多色退出

Multi-color dropout for scanned document
Abstract:
A method for removing unwanted form color content from a scanned document by segmenting the image into two or more tiles (14). Each tile (14) is classified into at least a first and second set according to its combination of background and color content. A background color is identified from the first set of tiles (14). At least one form color is identified from the second set of tiles. A transform is applied that shifts form color image data values toward background color data values.
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