Image matching method, program, and image matching system
First Claim
1. A blood vessel authentication apparatus comprising:
- an inputted image acquiring section configured to acquire an inputted image;
a transforming section configured to transform the inputted image to transformed information indicating image points in the inputted image based on a distance from a reference position to a closest point on a straight line passing through each image point;
a proper information acquiring section configured to acquire proper information indicating image points in the proper image based on a distance from a reference position to a closest point on a straight line passing through each image point;
a matching section configured to match the transformed information and the proper information; and
an authentication section configured to authenticate the inputted image according to the result of matching by the matching section, whereinthe matching section performs a Fourier transformation for the inputted and proper images and performs the matching of the inputted and proper image on the basis of correlated values responsive to phase components of the resultant Fourier transformation processed values.
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Abstract
An image matching method capable of matching images with a high precision and a program and an image matching system for the same, providing a conversion unit for performing image processing based on a registered image and a match image for converting points in each image to patterns of curves based on a distance from a reference position to the closest point on a straight line passing through each point in the image from the reference position and an angle formed by a straight line passing through the reference position and the closest point and an x-axis as a reference axis including the reference position, converting linear components in the images to patterns of a plurality of overlapped curves, and generating converted images, a correlation value generation unit for performing correlation processing based on the converted images and generating a correlation value, and a matching unit for performing the matching based on a signal indicating the correlation value generated by the correlation value generation unit.
17 Citations
5 Claims
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1. A blood vessel authentication apparatus comprising:
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an inputted image acquiring section configured to acquire an inputted image; a transforming section configured to transform the inputted image to transformed information indicating image points in the inputted image based on a distance from a reference position to a closest point on a straight line passing through each image point; a proper information acquiring section configured to acquire proper information indicating image points in the proper image based on a distance from a reference position to a closest point on a straight line passing through each image point; a matching section configured to match the transformed information and the proper information; and an authentication section configured to authenticate the inputted image according to the result of matching by the matching section, wherein the matching section performs a Fourier transformation for the inputted and proper images and performs the matching of the inputted and proper image on the basis of correlated values responsive to phase components of the resultant Fourier transformation processed values. - View Dependent Claims (2, 3, 4, 5)
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Specification