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Identity identification method by using finger thermal image

A technology for identification and fingering, which is applied in character and pattern recognition, instruments, computer parts, etc., and can solve problems such as fingerprints that cannot be sensed, fingers that are dirty, and fingerprint sensing devices that cannot obtain images, etc.

Active Publication Date: 2012-05-23
EGIS TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For this type of users, whether optical, pressure, capacitive, electric field, or capacitive pressure fingerprint sensors are used, their fingerprints cannot be sensed, even if there are a few technologies that claim to be able to sense fingerprints on the dermis , but because the fingers are often dirty, grease and various external substances adhere to it, which interferes with the detection of the dermis
And if the finger is stained with water, the fingerprint sensing device of the prior art cannot obtain a good image

Method used

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  • Identity identification method by using finger thermal image
  • Identity identification method by using finger thermal image
  • Identity identification method by using finger thermal image

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Embodiment Construction

[0028] In order to make the above-mentioned content of the present invention more comprehensible, a preferred embodiment is specifically cited below, together with the accompanying drawings, and described in detail as follows.

[0029] Since the fingers contain blood vessels, the pattern of blood vessels is also a unique finger feature of an individual. Therefore, the present invention provides a method for identifying the identity of a thermal image of a finger, which uses a finger touching or approaching a thermal or infrared sensor device, supplemented by the following signal or data processing method of the present invention, that is, a single sensor can be used The device simultaneously obtains the user's fingerprint thermal image and blood vessel distribution image (referred to as blood vessel thermal image). The principle of the sensing element can be the same as the thermoelectric sensing method disclosed in the aforementioned Chinese Invention Patent Publication No. 14...

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Abstract

The invention relates to an identity identification method of a finger thermal image. The invention consists of the following steps: retrieving one thermal image of one finger; obtaining pixel points at an overlapping position containing a finger print peak and a vessel, the pixel points containing the finger print peak without vessel, and pixel pints containing the vessel without the finger print peak from the thermal image, thereby extracting one fingerprint peak thermal image or a blood vessel thermal image; and identifying the identity according to the fingerprint peak thermal image or the blood vessel thermal image.

Description

technical field [0001] The invention relates to an identification method of a thermal image of a finger, in particular to an identification method capable of utilizing a fingerprint and a thermal image of blood vessels of a finger. Background technique [0002] The fingerprint sensor chip suitable for the present invention can be found in the following related patents proposed by the inventor of this case: Chinese invention patent application number 02124906.7, the application date is June 25, 2002, and the invention name is "temperature sensor and its Using the fingerprint identification chip of the temperature sensor", the publication number is 1463674. [0003] Traditional biometrics can capture the user's fingerprint as the basis for identification. The advantages of fingerprint identification are high accuracy, easy to use, and international algorithm standards. However, some users engaged in special industries may not have fingerprints. For example, people who are en...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06K9/00
Inventor 周正三
Owner EGIS TECH