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Color image conversion method and system for reducing color image data size

  • US 7,298,894 B2
  • Filed: 06/18/2003
  • Issued: 11/20/2007
  • Est. Priority Date: 06/18/2003
  • Status: Expired due to Fees
First Claim
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1. A color image conversion method for reducing the image data size of a monochrome document scanned by a image input device, comprising the steps of:

  • setting a tolerable error range for pixels;

    reading a source document to generate an original color image file;

    checking whether the pixel values derived from the original color image file fall within the tolerable error range;

    converting the original color image file into a monochrome image file to reduce the data, if all of the pixel values derived from the original color image file fall within the tolerable error range; and

    storing the converted file.

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