Patent Document ID: 9798950
Application ID: 14795510
Patent Status: 1

Claim One:
1. A feature amount generation device comprising: a feature point detecting unit configured to detect a feature point from an input image; a pixel information generating unit configured to generate pixel information from pixel values of surroundings of the feature point in the input image; a feature point pixel information distribution generating unit configured to generate a first distribution of pixel information of a first region including the feature point; a sub-feature point detecting unit configured to detect sub-feature points which are feature points in the surroundings of the feature point; a sub-feature point pixel information distribution generating unit configured to generate second distributions of pixel information of second regions including the sub-feature points; and a feature amount generating unit configured to generate a feature amount at the feature point based on the first distribution and the second distributions, wherein the sub-feature point pixel information distribution generating unit sets points of which feature evaluation values are lower than a feature evaluation value of the feature point detected by the feature point detecting unit as candidates for the sub-feature points.