Method for analyzing stored image details

Details Method for analyzing stored image details Method for analyzing stored image details

G - Physics

06

K

354/57

G06K 9/62 (2006.01) A61B 5/117 (2006.01) G06K 9/00 (2006.01) G06K 9/46 (2006.01) G07C 9/00 (2006.01)

Patent

CA 1167166

-16- Abstract A method for analyzing stored image details for identification purposes is disclosed in which slopes are abstracted from an image to provide three-dimensional recognition information. Data representing light levels of an image are stored in a picture memory device, which is analyzed in a predetermined manner to select absolute illumination magnitudes between fixed locations of the image. This information is directly related to the slope between the locations. Steeper slopes and their correspond- ing locations are stored as recognition data in a learn mode. In an access mode, the previously-obtained information is utilized to locate new data, and depending upon the degree of correlation therebetween, an indication of recognition is either verified or rejected.

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