Patent ID: 6185343
Filing Date: 2001-02-06
Classification: G06K

Abstract:
A method for detecting a position of a check object using image processing, comprising the steps of:picking up an image of the check object so as to prepare a check image of the check object;smoothing said check image of the check object by removing noise associated with said check image;preparing a reference template having a reference image of the check object;preparing a plurality of collation templates by rotating the reference template at various rotation angles;collating the collation templates with the check image so as to evaluate a correlation degree therebetween;acknowledging a rotation angle of the reference template for preparing the collation template, which matches with the check image most exactly, as a rotation angle of the check object; andcompressing the check image and the collation templates at a given compression rate by an average compression processing which calculates an average value of a brightness in a predetermined area and adopts the average value as a brightness of one pixel of the compressed check image and the collation templates, wherein said predetermined area comprises more than one pixel.