Long-distance iris identification device

An iris recognition and long-distance technology, which is applied in character and pattern recognition, human identification, medical science, etc., can solve the problems of immature iris recognition technology, inconvenient use, and few types of products, reaching the scope of application Wide range, long recognition distance, realize the effect of recognition and authentication

Inactive Publication Date: 2009-09-30
NANJING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Comprehensive domestic and foreign perspectives, the current application of iris identification technology is still in an immature stage, with few types of products, high prices, and inconvenient use

Method used

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  • Long-distance iris identification device
  • Long-distance iris identification device
  • Long-distance iris identification device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0021] Step 1. Detect a moving target in the field of view of the wide-angle camera

[0022] Step 2. Use YCbCr (brightness, blueness, redness) color space skin color to segment the face area within the range of the moving target, and if an area with a suitable geometric size and shape is found, it is preliminarily determined as a face.

[0023] Step 3. Use geometric features to locate human eyes in the face area, and if a suitable human eye is found, it is further determined that 2 and 3 are correct.

[0024] Step 4. Control the movement of the pan-tilt so that the human eye is in the center of the wide-angle camera

[0025] Step 5. Control the telephoto camera to focus to obtain a clear image of the human eye

[0026] Step 6. Precisely locate the position of the iris band in the human eye image. If the positioning is successful, extract the iris band image

[0027] Step 7. Use Gabor filtering to extract the feature information of the iris band image, which is represented by a fea...

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Abstract

The invention relates to an iris identification device combining dynamic human eye tracking, effectively extending the distance and the angle of iris identification and also identifying multiple targets. The iris identification device combining dynamic human eye tracking utilizes two image collection devices: a wide-angle video camera is coordinated with a long-focus video camera. The iris identification device can utilize the wide-angle video camera to automatically catch targets within a working range so as to control a tripod head device to drive the long-focus video camera to aim at a target human eye, thus the focusing and the collection and the identification of iris images can be completed; assignment and alignment during the process can be achieved without any targets participation, the iris identification device is automatically regulated to complete the collection of the iris images in a coordinate way, thereby effectively realizing the identification and the verification of the iris images.

Description

Technical field [0001] The invention relates to a remote iris recognition device used for identity verification. The device expands the range and angle of the iris recognition device by dynamically tracking the human eye. Background technique [0002] Iris recognition has a wide range of applications in modern society. Iris recognition technology is a type of biometric technology that developed rapidly in the mid to late 1990s. Compared with other biometric technologies, it has the following characteristics: (1) Iris image passing The non-contact method can avoid the spread of diseases and is easy to be accepted; (2) The iris texture structure is not easy to be forged; (3) The iris texture structure is complex and the number of features is large, so iris recognition is considered to be the most reliable biometric recognition technology. [0003] From a comprehensive perspective at home and abroad, the current application of iris identification technology is still in an immature s...

Claims

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Application Information

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IPC IPC(8): A61B5/117G06K9/00A61B5/1171
Inventor 袁杰曹晟辰都思丹李杨
Owner NANJING UNIV
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