Method and apparatus for registering palm pattern impression

An apparatus for registering palm pattern impression impressed by each of different individuals who are subject to personal identification, comprising:

• an image displaying means for displaying said palm pattern impression as image data,
• a region splitting means for detecting a rectangular area enclosed by a pair of horizontal lines on the wrist side and the fingertip side and a pair of vertical lines on the thumb side and the little finger side that are orthogonal to said horizontal lines, splitting said rectangular area into segments, using lines that are parallel to said horizontal lines and said vertical lines respectively, and splitting said palm pattern impression into multiple regions by merging said segments individually according to the pre-determined combinations,
• a feature extracting means for extracting the features of said palm pattern impression, and
• a data storing means for registering the features extracted from each of the regions by said feature extracting means that are obtained by splitting by said region splitting means as feature information on a region-to-region basis.

An apparatus for registering palm pattern impression impressed by each of different individuals who are subject to personal identification, comprising:

• an image displaying means for displaying said palm pattern impression as image data,
• a region splitting means when receiving input of information about a rectangular area enclosed by a pair of horizontal lines on the wrist side and the fingertip side and a pair of vertical lines on the thumb side and the little finger side that are orthogonal to said horizontal lines, splitting said rectangular area into segments, using lines that are parallel to said horizontal lines and said vertical lines respectively, and splitting said palm pattern impression into multiple regions by merging said segments individually according to the pre-determined combinations,
• a feature extracting means for extracting the features of said palm pattern impression, and
• a data storing means for registering the features extracted from each of the regions by said feature extracting means that are obtained by splitting by said region splitting means as feature information on a region-to-region basis.

A palm pattern impression registering program for execution on computer to conduct a method for registering palm pattern impression impressed by each of different individuals who are subject to personal identification, comprising the functions of:

• when performing the functions of splitting said palm pattern impression into the pre-determined multiple regions and registering the features extracted from each of the regions as feature information on a region-to-region basis,
• detecting a rectangular area enclosed by a pair of parallel horizontal lines that are obtained by approximating wrist-side and fingertip-side demarcation lines between the palm pattern impression and the background, and a pair of parallel vertical lines that are orthogonal to said horizontal lines and that are obtained by approximating thumb-side and little-finger-side demarcation lines between the palm pattern impression and the background,
• splitting said rectangular area into segments using lines that are parallel to said horizontal lines and said vertical lines, respectively, and
• splitting said palm pattern impression into multiple regions by merging said segments according to the pre-determined combinations.