초록 ▼

A position detection system which performs rough detection processing of detecting a rough position of an approximate position of a check object in a check range based on the comparison result of comparison processing of comparing images provided by compressing the check image and a correct solution

A position detection system which performs rough detection processing of detecting a rough position of an approximate position of a check object in a check range based on the comparison result of comparison processing of comparing images provided by compressing the check image and a correct solution image subjected to the detection displacement operation of displacing by rough detection displacement amount at a time in the check image, then performs precise detection processing of detecting a more precise position of the check object in the check range in the proximity of the rough position based on the comparison result of comparison processing of comparing images provided by compressing the check image and the correct solution image subjected to the detection displacement operation of displacing by rough detection displacement amount at a time in the check image at a compression rate more moderate than the previous compression rate, and detects the position of the check object in the check range in multiple steps, wherein the compression processing is average compression processing.

대표청구항 ▼

[ What is claimed is:] [1.] 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

[ What is claimed is:] [1.] 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.