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Skin evaluation method and image simulation method

  • US 20070092160A1
  • Filed: 12/10/2003
  • Published: 04/26/2007
  • Est. Priority Date: 06/11/2003
  • Status: Active Grant
First Claim
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1. A method for evaluating the luster of a skin, comprising:

  • (A1) imaging the skin of a test subject and obtaining digital image data;

    (A2) extracting the data of mirror-reflected light components of respective pixels from the digital image data;

    (A3) obtaining the average value of the brightness of the respective pixels from the data of the mirror-reflected light components and defining it as physical glossiness;

    (A4) applying multiresolution analysis to the data of the mirror-reflected light components to separate the data into respective data of a plurality of different frequency components, selecting data of a plurality of middle-frequency components representing the texture of a skin from the data, synthesizing the selected data and defining the synthesized data as reconstructed image data, squaring the data of the respective pixel components of the reconstructed image data, obtaining the average value and defining the result as an apparent roughness of a skin surface; and

    (A5) representing the luster state of the skin by the physical glossiness and the apparent roughness of the skin surface.

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