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Blood vessel image acquisition device and terminal

A blood vessel image and acquisition device technology, which is applied in the field of authentication systems, can solve the problems of large position deviation of shooting parts, complex finger positions, and inability to capture blood vessel images, etc., and achieve the effect of small size, good convenience, and high authentication accuracy

Active Publication Date: 2017-09-15
HITACHI LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, as the miniaturization of the device progresses, for example, structures such as a finger positioning table for positioning the finger are removed for miniaturization, so the position of the finger presented in the device becomes complicated, and the positional deviation of the imaging part becomes larger. Problems such as excessive noise such as blurring and wrinkles in the captured image cannot capture the desired blood vessel image for authentication, and the problem of decreased imaging accuracy

Method used

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  • Blood vessel image acquisition device and terminal
  • Blood vessel image acquisition device and terminal
  • Blood vessel image acquisition device and terminal

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] figure 1 It is a figure which shows the whole structure of the biometric authentication system using the blood vessel of a finger which concerns on 1st Embodiment. In addition, needless to say, the present invention is not limited to a system, but may also be a device in which all or a part of the structure is mounted on a housing. The device may be a personal authentication device that includes authentication processing, or it may be a blood vessel image acquisition device or a blood vessel image extraction device that is specialized for blood vessel image acquisition, and the authentication process is performed outside the device. In addition, it may be an embodiment as a terminal as described later.

[0033] The authentication system according to the first embodiment includes an input device 2 , an authentication processing unit 10 , a storage device 14 , a display unit 15 , an input unit 16 , a speaker 17 , and an image input unit 18 .

[0034] The input device 2 ...

Embodiment 2

[0175] In this embodiment, an example of a structure that is more compact and can improve the accuracy of image processing for the arrangement of light sources in the above-mentioned embodiment 1 will be described.

[0176] Figure 14A as well as Figure 14B It is an embodiment of a small finger vein authentication device in which a light source is arranged in a circular shape under the finger to be photographed.

[0177] Such as Figure 14A As shown in the above figure, the acrylic plate 22 at the opening of the device is opened in a circular shape, and the light sources 3-a, 3-b are arranged around it in a circular shape. Regarding the light source, light sources of different wavelengths are alternately arranged. Therefore, regardless of the wavelength of the light source, the incident position of the light is close, so the brightness gradient of the image is similar, so it is possible to suppress the artifact caused by the undesired brightness difference when performing ...

Embodiment 3

[0189] In this example, use Figure 16 An example in which the authentication device described in Example 2 is mounted on a mobile terminal is shown. The mobile terminal 160 has a touch panel 161 on which the input device 2 is mounted. Since it has a pressure sensor, it can also serve as an operation button of a mobile terminal. For example, when logging into the mobile terminal, by pressing the input device 2, it is determined whether or not it matches the blood vessel of the previously registered user, and if it matches, automatic login is possible. Thus, the security of the mobile terminal can be improved in a natural operation.

[0190] As other applications, in addition to various functions that can be realized by specifying the person, such as identity verification at the time of online payment and individual custom setting calls of various application software, it can also be applied to the use of blood vessel graphics Entertainment software such as randomness and co...

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PUM

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Abstract

The present invention provides a blood vessel image acquisition device and a terminal, which can miniaturize the device and accurately acquire biometric information to improve authentication accuracy. The blood vessel image acquisition device includes: a setting area for a finger; a light source for irradiating light to the finger presented in the setting area; an imaging unit for photographing light from the light source penetrating the finger; a detection unit for detection; and an image processing unit for processing an image captured by the imaging unit, the image processing unit acquires the position of the first pressing region where the pressure from the finger included in the image is equal to or greater than a predetermined pressure value, and calculates a pre-stored position Based on the similarity between the position of the registered compression region and the position of the first compression region included in each of the plurality of registered images, a registered image to be compared with the image is selected from the plurality of registered images based on the calculated similarity.

Description

technical field [0001] The present invention relates to an authentication system using living organisms to authenticate individuals, in particular to a small, convenient and high-precision authentication technology. Background technique [0002] Among various biometric authentication technologies, finger vein authentication is known as a technology capable of high-precision authentication. Finger vein authentication uses the blood vessel pattern inside the finger, so it can achieve excellent authentication accuracy, and compared with fingerprint authentication, forgery and tampering are more difficult, so it can achieve high security. [0003] In recent years, the number of cases where biometric authentication devices are installed in mobile terminals such as mobile phones, notebook computers, smartphones, and tablet terminals, safes, safes, and printers to ensure the security of each device is increasing. In addition, as fields where biometric authentication is applied, in...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06K9/00G06K9/20G06V40/145
CPCG06V40/13G06V40/1365G06V40/67G06V40/14A61B5/6843A61B5/6898A61B5/0059A61B5/1172A61B5/489A61B5/6826A61B2560/0431A61B2562/0238A61B2562/0247A61B5/1171G06V40/50G06V30/242G06V40/145
Inventor 三浦直人松田友辅清水春美长坂晃朗宫武孝文
Owner HITACHI LTD