Patent ID: 8180159
Filing Date: 2012-05-15
Classification: G06K

Abstract:
1. An image processing apparatus, comprising: a feature point detection section for detecting feature points included in input image data; and a features calculation section for calculating features of the input image data in accordance with relative positions of the feature points detected by the feature point detection section, the feature point detection section including: a partial image extraction section for extracting, from the input image data, a partial image made of a plurality of pixels including a target pixel, an index for indicating busyness of the partial image being not less than a predetermined threshold value; a displaced image generation section for generating a self-displaced image by displacing at least a part of the partial image, which has been extracted by the partial image extraction section, with other part of the partial image; a matching test determination section for determining whether an image pattern included in the partial image matches an image pattern included in the self-displaced image or not; and a detection section for detecting, as each of the feature points, (a) a target pixel in the partial image including the image pattern determined by the matching test determination section as matching the image pattern included in the self-displaced image, or (b) a block made of a plurality of pixels including the target pixel.