Automated detection of pornographic images
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United States of America Patent
Stats
-
Sep 5, 2006
Grant Date -
Oct 21, 2004
app pub date -
May 7, 2004
filing date -
Mar 29, 2001
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A method of detecting pornographic images, wherein a color reference database is prepared in LAB color space defining a plurality of colors representing relevant portions of a human body. A questionable image is selected, and sampled pixels are compared with the color reference database. Areas having a matching pixel are subjected to a texture analysis to determine if the pixel is an isolated color or if other comparable pixels surround it; a condition indicating possible skin. If an area of possible skin is found, the questionable image is classified as objectionable. A further embodiment includes preparation of a questionable image reference shape database defining objectionable shapes. An image with a detected area of possible skin is compared with the shape database, and depending on the results of the shape analysis, a predefined percentage of the images are classified for manual review.
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