Patent Document ID: 20160239984
Application ID: 15018986
Patent Status: 0

Claim One:
1. An image evaluation apparatus comprising: a feature descriptor calculator configured to calculate a feature descriptor that indicates a feature of an image for each pixel position in image data; a pixel evaluator configured to produce a score that evaluates the feature descriptor for each pixel position in the image data; a score accumulator configured to calculate, for each pixel position in the image data, a cumulative score obtained by accumulating all scores in an area including a minor angle that is formed by a half line extending in a predetermined first direction from the each pixel position serving as a starting point and another half line extending in a predetermined second direction from the each pixel position; and an area evaluator configured to calculate an area evaluation value that is a total of the scores in a quadrilateral area enclosed by two lines in parallel with the first direction and two lines in parallel with the second direction on the basis of the cumulative scores at pixel positions at vertexes of the quadrilateral area.