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Perceptual similarity image retrieval method

  • US 6,563,959 B1
  • Filed: 07/30/1999
  • Issued: 05/13/2003
  • Est. Priority Date: 07/30/1999
  • Status: Expired due to Term
First Claim
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1. A method for characterizing a digital image represented by an array of pixels, comprisingdividing the pixel array into a plurality of cells, each cell comprising a plurality of pixels, calculating properties of individual cells, joining neighboring cells into a plurality of spots based on the similarity of cell properties said cell properties including color characteristics and position within the image, and calculating properties of spots to provide a set of spot descriptors for respective spots including determining shape and color characterisics of spots and their relative position within the image, whereby the resulting sets of spot descriptors characterize the digital image.

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