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Method and apparatus for automatic detection of image target gamma

  • US 6,192,149 B1
  • Filed: 04/08/1998
  • Issued: 02/20/2001
  • Est. Priority Date: 04/08/1998
  • Status: Expired due to Term
First Claim
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1. An apparatus for controlling an image output device, comprising:

  • a transform module that forms a cross-plot of a document'"'"'s effective luminance and effective saturation;

    a histogram module that generates a histogram based on the cross-plot;

    a determination module that examines the histogram over a predetermined subset of effective luminance values; and

    a controller that controls operation of the image output device based on the examination performed by the determination module.

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