image matching method and image matching apparatus using the image feature extraction method and image feature extraction apparatus, and this

摘要

PROBLEM TO BE SOLVED: To extract a feature of an edge without losing the feature while suppressing an influence due to a positional deviation on edge information included in an image.;SOLUTION: The feature of the image is extracted by using the image feature extraction method including a differential image generation process for generating a differential image by applying a differential filter of a prescribed direction to an input image, a positive and negative separation process for separating a positive area from a negative area on the basis of a differential value of the differential image generated in the differential image generation process, a positive and negative image generation process for generating a positive image on the basis of the positive area separated by the positive and negative separation process and generating a negative image on the basis of the negative area, and a feature image generation process for generating a positive feature image in which the positive area included in each image is inflated and a negative feature image in which the negative area is inflated from the positive image and the negative image generated in the positive and negative image generation process.;COPYRIGHT: (C)2013,JPO&INPIT