Method and apparatus for visual lossless image syntactic encoding

  • US RE42,148 E1
  • Filed: 08/21/2008
  • Issued: 02/15/2011
  • Est. Priority Date: 01/23/2000
  • Status: Expired due to Term
First Claim
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1. A visual perception threshold unit for image processing, the threshold unit comprising:

  • a parameter generator to generate a multiplicity of parameters that describe at least some of the information content of at least one video frame to be processed; and

    a threshold generator to generate from said parameters, a plurality of visual perception threshold levels to be associated with the pixels of the at least one video frame, wherein said threshold levels define contrast levels above which a human eye can distinguish a pixel from among its neighboring pixels of said at least one video frame.

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