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Method and apparatus for performing an adaptive extended dynamic range algorithm

  • US 6,546,124 B1
  • Filed: 10/25/1999
  • Issued: 04/08/2003
  • Est. Priority Date: 07/02/1999
  • Status: Expired due to Fees
First Claim
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1. An extended dynamic range processing component for processing an input image to generate an output image which has been compressed down to a desired gray scale intensity range, the EDR processing component performing an EDR algorithm, the EDR processing component comprising:

  • logic configured to process the input image in accordance with the EDR algorithm to generate the compressed output image, the logic determining a local mean intensity value of the input image based on an input image intensity value and a plurality of image intensity values surrounding the input image intensity value, the logic utilizing the local mean intensity value to automatically determine the dynamic range of the input image, the logic utilizing the determination of the dynamic range and the local mean intensity value to determine a percentage of the local mean intensity value to be subtracted from the input image intensity value, the logic subtracting the determined percentage of the local mean intensity value from the input image intensity value to compress the input image intensity value down to the desired gray scale intensity range.

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