Image processing device, biometric authentication device and image processing method

A biological authentication and biological technology, applied in digital data authentication, three-dimensional object recognition, character and pattern recognition, etc., can solve the difficulty of high-precision recognition and capture of target shape, long distance, matching biological data and registered biological data. And other issues

Active Publication Date: 2018-06-12
FUJITSU LTD
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Problems solved by technology

On the other hand, in the case of, for example, a biometric authentication device using the palm veins, it is difficult to make the distance from the light source to the hand sufficiently long due to the limitations described above, etc., and the influence of vignetting becomes relatively large depending on the hand position
For this reason, it is difficult to detect the hand position with high accuracy using the SFS technique, and it is difficult to improve the matching accuracy between matching biometric data and registered biometric data
[0005] Therefore, according to the conventional shape recognition using the SFS technique, it is difficult to recognize the shape of the captured target with high accuracy

Method used

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  • Image processing device, biometric authentication device and image processing method
  • Image processing device, biometric authentication device and image processing method
  • Image processing device, biometric authentication device and image processing method

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Embodiment Construction

[0031] Preferred embodiments of the present invention will be described with reference to the accompanying drawings.

[0032] In an image processing apparatus, an image processing method, or a computer-readable storage medium according to an aspect of the present invention, the imaging device captures an object irradiated with light from a light source, and the brightness calculation unit calculates brightness at a plurality of positions on the object. , and the coefficient calculation unit calculates a correction for each of the plurality of positions based on the distance from the light source to each of the plurality of positions and the brightness at each of the plurality of positions coefficient.

[0033] In the biometric authentication device or the computer-readable storage medium according to another aspect of the present invention, the imaging device captures an image of a biological target irradiated with light, and the luminance calculation unit calculates the lumin...

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Abstract

An image processing device, a biometric authentication device and an image processing method are provided. The image processing apparatus includes: a light source that irradiates light on an object; an imaging device that captures the object; a brightness calculation unit that calculates brightness at a plurality of positions on the object; and a coefficient calculation unit. The coefficient calculation unit calculates a correction coefficient for each of the plurality of positions based on a distance from the light source to each of the plurality of positions and luminance at each of the plurality of positions.

Description

technical field [0001] Embodiments disclosed herein relate to an image processing device, a biometric authentication device, an image processing method, a program, and a computer-readable storage medium storing such a program. Background technique [0002] For example, when capturing biological data to be registered in biometric authentication using the veins of a human palm, the position of the hand, which is an example of a capture target, is guided by a known guide member or the like. On the other hand, when biological data to be matched with registered biological data is captured, there are cases where a guide member is not provided to guide the position of the hand. When capturing the biometric data of a hand that is not guided by a guiding member, the difference between registered biometric data and matching biometric data becomes large due to the difference in hand position, and the success rate of personal identification (authentication) decreases. Personal identifi...

Claims

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Application Information

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Patent Type & AuthorityPatents(China)
IPC IPC(8): G06K9/00G06K9/32G06F21/32G06V10/141
CPCG06V40/1312G06V20/64G06V10/141
Inventor青木隆浩
OwnerFUJITSU LTD