Filtering in picture colorization

  • US 6,263,101 B1
  • Filed: 10/27/1995
  • Issued: 07/17/2001
  • Est. Priority Date: 09/01/1995
  • Status: Expired due to Term
First Claim
Patent Images

1. A method for modifying colors of a digitized frame of picture stock comprising the steps of:

  • digitizing an unfiltered reference picture, thereby generating a set of representative digital units, each of the digital units having a value;

    digitizing a filtered reference picture substantially identical in subject matter to the unfiltered reference picture, thereby generating a set of representative digital units, each of the digital units corresponding to a digital unit of the unfiltered set of digital units and having a value;

    quantitative differencing between the value of each corresponding digital unit of the filtered and unfiltered sets of digital units;

    generating a mathematical model representative of the quantitative difference between the value of each of the digital units of the filtered and unfiltered sets of digital units; and

    applying the mathematical model to the digitized frame.

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