Patent ID: 7889929
Filing Date: 2011-02-15
Classification: G06K

Abstract:
1. An image processing apparatus comprising: a feature region extracting section that extracts a plurality of feature regions from each of first and second images; a feature amount calculating section that calculates feature amounts of the feature regions extracted by the feature region extracting section; a position calculating section that calculates positions of the feature regions extracted by the feature region extracting section; a first selecting section that selects pairs of feature regions, which are estimated to be common in the first and second images, based on the feature amounts calculated by the feature amount calculating section and the positions of the feature regions calculated by the position calculating section; a second selecting section that narrows down the selected pairs of feature regions based on similarity in relative positional relation between the feature regions of the first and second images; a correction factor calculating section that calculates a correction factor used to correct position shift between the first and second images based on the narrowed pairs of feature regions by the second selecting section; and the image processing apparatus being a hardware processor.