| http://www.w3.org/ns/prov#value | - image input unit 1, and data input by a data input unit 15 such as a mouse, keyboard, or the like, and a corresponding point extraction unit 7 for searching for corresponding points between the input image and background image and generating corresponding points' position data. [0272] The generated corresponding points' position data are supplied to a geometric transformation unit 8, which geometr
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