Image recognition apparatus, image recognition method and image recognition program for specific pattern

A specific pattern image recognition method comprising the steps of:

• inputting a multi-level color image;
• binarizing the input multi-level color image with regard to specific colors and generating a binary image;
• performing linear conversion of an examination target image in the binary image without changing the size thereof;
• calculating a degree of correlation between the examination target image and the linear-converted image obtained after the linear conversion;
• and
• determining whether the examination target image is the specific pattern based on the calculated degree of correlation.

A specific pattern image recognition method comprising the steps of:

• inputting a multi-level color image;
• binarizing the input multi-level color image with regard to specific without changing the size thereof;
• performing linear conversion of an examination target image in the binary image without changing the size thereof;
• comparing the examination target image and the post-linear conversion image;
• and
• determining whether or not the examination target image is the specific pattern based on the comparison result.

A computer program that causes the computer to carry out specific pattern image recognition, the program comprising the steps of:

• inputting a multi-level color image;
• binarizing the input multi-level color image with regard to specific colors and generating a binary image;
• performing linear conversion of an examination target image in the binary image without changing the size thereof;
• calculating a degree of correlation between the examination target image and the linear-converted image obtained after the linear conversion;
• and
• determining based on the calculated degree of correlation whether or not the examination target image is the specific pattern.