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Pyramidal Decomposition for Multi-Resolution Image Filtering

  • US 20080152251A1
  • Filed: 01/27/2006
  • Published: 06/26/2008
  • Est. Priority Date: 01/31/2005
  • Status: Abandoned Application
First Claim
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1. An image processing system comprising:

  • a plurality of stages (31-33, 41-43), each stage of the plurality of stages (31-33, 41-43) including;

    a downsampler (110, 120, 130) that is configured to receive an input image (101, 111, 129) and to produce therefrom a first downsampled image (111, 121, 131) that is provided as the input image of a subsequent stage (32-33, 42-43),a filter (340-360, 440-460) that is configured to filter the input image (101, 111, 129) and to produce therefrom a filtered image (341-361, 441-461),an upsampler (115, 125, 135) that is configured to receive a second downsampled image (346-366, 446-466) and to provide therefrom an upsampled image (116, 126, 136), anda subtractor (140, 150, 160) that is configured to subtract the upsampled image (116, 126, 136) from the filtered image (341-361, 441-461), to provide therefrom a Laplacian image (349-369, 449-469) based on the filtered image (341-361, 441-461).

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