Finger vein image acquisition system

An image acquisition system and finger vein technology, applied in the field of human biometrics, can solve the problems of unable to completely cover the fingers, poor image uniformity, unstable acquisition light source, etc.

Inactive Publication Date: 2018-11-23
CHANGZHOU COLLEGE OF INFORMATION TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The main purpose of the present invention is to provide a finger vein image acquisition system to solve the problems of poor image uniformity, insufficient light intensity, inability to completely cover fingers and unstable acquisition light sources in the prior art

Method used

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  • Finger vein image acquisition system
  • Finger vein image acquisition system
  • Finger vein image acquisition system

Examples

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Embodiment Construction

[0028] In order to make the technical solutions of the present invention clearer and clearer to those skilled in the art, the present invention will be further described in detail below in conjunction with the examples and accompanying drawings, but the embodiments of the present invention are not limited thereto.

[0029] Such as figure 1 with figure 2 As shown, a kind of finger vein image acquisition system provided in this embodiment includes OV7411P controller 1, infrared camera 3, common camera 4, optical filter 7 and infrared light source array 10, and optical filter 7 separates infrared camera 3 and Ordinary camera 4 is separated from infrared light source array 10, and one end of optical filter 7 is provided with touch capacitor 8, and touch capacitor 8 is connected with OV7411P controller 1, and infrared camera 3 and ordinary camera 4 are connected to OV7411P controller through camera drive circuit 2 1 connection, the OV7411P controller 1 is connected to the infrare...

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Abstract

The invention discloses a finger veil image acquisition system, and belongs to the technical field of human body biological recognition. The system comprises a controller, an infrared camera, a commoncamera, a light filter and an infrared source array, wherein the light filter respectively separates the infrared camera and the common camera from the infrared source array; a touch capacitor is arranged at one end of the light filter; the touch capacitor is connected with the connector; both the infrared camera and the common camera are connected with the controller through a camera driving circuit; the controller is connected with the infrared source array through a potentiometer array; a lens is arranged between the light filter and the infrared source array; and the touch capacitor is used for determining a putting position of fingers. According to the system, finger veins are irradiated through the infrared camera and the infrared source array, so that the problems that the image uniformity is relatively bad, the illumination intensity is not enough and the fingers cannot be completely covered as common cameras and white light LEDs are used as light sources in the prior art areeffectively solved.

Description

technical field [0001] The invention relates to a vein collection system, in particular to a finger vein image collection system, which belongs to the technical field of human biometric identification. Background technique [0002] Vein recognition technology is based on the principle that hemoglobin in human veins can absorb light of a certain wavelength. When the light in this wavelength range is used to irradiate the vein, the vein image is obtained, and then the obtained image is analyzed and processed. Finally, the obtained vein characteristic value Match in the database to realize the identification of individuals. At present, the collection and recognition of finger vein images mainly use a common camera and white light LED as the light source, resulting in poor image uniformity, insufficient light intensity, and inability to completely cover the finger. In addition, the acquisition light source is unstable, which leads to the distortion of the collected finger vein i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K9/00H04N5/225H04N5/235H04N5/33
CPCH04N5/33G06V40/1318H04N23/56H04N23/74
Inventor 文纪斌张承江
Owner CHANGZHOU COLLEGE OF INFORMATION TECH
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