IMAGE FEATURE EXTRACTION METHOD, IMAGE FEATURE EXTRACTION APPARATUS, AND RECORDING MEDIUM STORING PROGRAM THEREFOR

摘要

A feature extraction method includes acquiring an image, detecting a vanishing point in the image, setting a plurality of ellipses and a plurality of half-lines with respect to the detected vanishing point to segment the image into a plurality of regions, and extracting a feature of each segmented region. With the disclosed method, a global feature can be appropriately extracted from an image including a vanishing point or other relevant features.

主权项

1. A feature extraction method comprising:
acquiring an image; detecting a vanishing point in the acquired image; setting m ellipses and n half-lines with respect to the detected vanishing point to segment the image into a plurality of regions; and extracting a feature of a region segmented by the set ellipses and half-lines, wherein, in a case where m=0, n is an integer satisfying n≧2, and in a case where m is an integer satisfying m≧1, n is an integer satisfying n≧0.