Method of correlation of images in biometric applications

a biometric and image technology, applied in the field of image correlation in biometric applications, can solve the problems of large computational load, difficult pixel-by-pixel comparison of images, and large processing of images in hardware or software, and achieve the effect of reducing background noise in image projections

Inactive Publication Date: 2005-11-01
UNIVERSITY OF MASSACHUSETTS LOWELL
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  • Summary
  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Benefits of technology

The technical effect described in this patented method involves adjusting two different types of data (images) together based on their positional relationships or other factors like distance between them. This helps reduce any differences that may occur during imagery analysis due to external sources such as lightning strikes or atmospheric conditions.

Problems solved by technology

The technical problem addressed by this patented technology relates how to compare two different types of data - one being captured from another type without affecting their quality-of-service level. This can help improve safety measures like face detection system that uses facial features extracted from these cameras to detect individuals who may have been identified through analysis.

Method used

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  • Method of correlation of images in biometric applications
  • Method of correlation of images in biometric applications

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Embodiment Construction

[0015]A description of preferred embodiments of the invention follows.

[0016]The present invention relates to correlating images of biometric objects. The present invention uses the deviation of symmetry of correlation functions to compare images. In general, a correlation of images yield a result, in the form of a discretized function of the offset of the data sets being compared. If the images being compared are describing the same object then there is a symmetry of correlation functions. The degree of symmetry provides the closeness of fit between the images. For example, a few percent deviation from symmetry indicates that the correlation function is comparing two different images.

[0017]In particular, the present image correlation process may be used to compare prerecorded reference image and an actual acquired image of a biometric object such as fingerprints. The reference image may be stored in memory and the actual image may be acquired using an image capturing device.

[0018]FIG.

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Abstract

A method and apparatus for computing correlating images for image recognition is provided. In particular, the method is used to compare images of a biometric object to authorize an individual or verify whether an individual is the person he claims to be. The biometric objects may include fingerprints, hand or palm prints, and retina scans. The method uses a deviation of symmetry of correlation functions to determine whether the images are of a same object.

Description

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Claims

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Application Information

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Owner UNIVERSITY OF MASSACHUSETTS LOWELL
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