Method for matching images, image matching device, image...

Details Method for matching images, image matching device, image... Method for matching images, image matching device, image...

2011-07-05

2011-07-05

Tabtabai, Abolfazl (Department: 2624)

Image analysis

Pattern recognition

Template matching

C358S448000, C701S028000

Reexamination Certificate

active

07974474

ABSTRACT:
An image matching device includes a section calculates feature points on an input document image, a section that calculates features of the input document image in accordance with a relative position between the calculated feature points, and sections for comparing the calculated features of the input document image with features of a reference document image to determine whether the input document image is similar to the reference document image. When it is determined that the input and reference documents are similar, a document discrimination section determines a position of an image on the input document and similar to the reference document image, in accordance with the positions of the coordinates of the feature points on the input document and on the reference document.

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Nakai et al., “Document Image Retrieval and Removal of Perspective Distortion Based on Voting for Cross-Ratios”, Meeting on Image Recognition and Understanding (MIRU 2005), Jul. 2005, pp. 538-545.

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