Skin pattern feature extracting apparatus

Details Skin pattern feature extracting apparatus Skin pattern feature extracting apparatus

G - Physics

06

K

G06K 9/46 (2006.01) G06F 3/00 (2006.01) G06F 3/14 (2006.01) G06K 9/00 (2006.01) G06T 3/00 (2006.01)

Patent

CA 2244034

The present invention relates to a skin pattern feature extracting apparatus for skin pattern images such as fingerprints, palm prints or ridge patterns of other parts of the body. An original image is held in an image holder, and displayed on an image display to be viewed by the operator. The operator inputs the angle of rotation and ratio of compression of a focal point of the original image for observing ridges more clearly. A perspective transforming unit generates a resultant image according to a corresponding perspective transformation (i.e., affine transformations), and a perspective transformed image display displays the resultant image to the user. The operator performs manual plotting and manual tracing with reference to the resultant image. The result of the operations is inputted to and recorded in the manual input unit, and transformed in a feature data transforming unit to feature data.

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