| 摘要 |
<P>PROBLEM TO BE SOLVED: To improve accuracy of general object recognition by capturing an outline feature. <P>SOLUTION: An image feature quantity extraction apparatus includes: a feature point detection unit 20 for detecting a plurality of feature points from frame image data; a feature point scale detection unit 30 for estimating, for each of the plurality of feature points, a scale value that indicates a region including an edge component of the image in a local region near the feature point; a feature point main direction detection unit 40 for detecting the edge component from the frame image data and for detecting, for each of the plurality of feature points, a main direction of the edge component in the local region near the feature point; and a co-occurrence feature vector generation unit 50 for generating, for each of the plurality of feature points, a co-occurrence feature vector based on spatial co-occurrence of a local feature quantity for the feature point on the basis of a scale estimation value and a main direction estimation value. <P>COPYRIGHT: (C)2013,JPO&INPIT |
