System And Method For Compressing The Dynamic Range Of An Image

  • Published: Nov 17, 2005
  • Earliest Priority: Jan 15 2002
  • Family: 7
  • Cited Works: 0
  • Cited by: 42
  • Cites: 5
  • Additional Info: Full text Published
Abstract

A gradient domain compression system generates, from an input image having a high luminance dynamic range, an output image having a lower luminance dynamic range. The system comprises a gradient image generator module, a gradient compression module, and an output image generator module. The gradient image generator module is configured to generate, from the input image, a gradient image representing, for respective points of the input image, gradient values in the luminance of the input image. The gradient compression module is configured to receive the gradient image and generate a compressed range gradient image in which the range of gradient values are compressed. The output image generator module is configured to receive the compressed range gradient image and to generate therefrom an image, the image generated by the output image generator module comprising the output image.


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Document History
  • Publication: Nov 17, 2005
  • Application: Jan 15, 2003
    US US 81369103 A
  • Priority: Jan 15, 2003
    US US 81369103 A
  • Priority: Jan 15, 2002
    US US 34956802 P

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