Device for remote iris tracking and acquisition, and method thereof

A collection device and collection method technology, applied in image data processing, instruments, character and pattern recognition, etc., can solve the problems of multiple target interference, inability to collect information from a long distance, and low accuracy of recognition algorithms

Active Publication Date: 2012-12-19
宁波智能装备研究院有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problem that the existing iris collection device cannot collect information at a long distance, the target needs to actively cooperate with the collection in the collecti

Method used

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  • Device for remote iris tracking and acquisition, and method thereof
  • Device for remote iris tracking and acquisition, and method thereof
  • Device for remote iris tracking and acquisition, and method thereof

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Experimental program
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specific Embodiment approach 1

[0054] Specific implementation mode one: combine figure 1 Describe this embodiment, a kind of remote iris tracking and collection device described in this embodiment includes binocular camera 1, telephoto camera 2, two-degree-of-freedom rotating platform 3, infrared light source 4 and computer 5, the binocular camera 1 The signal output end is connected with the face information acquisition signal input end of the computer 5, the signal output end of the telephoto camera 2 is connected with the signal input end of the face information after the variable magnification zoom of the computer 5, and the motion of the two-degree-of-freedom rotating pan platform 3 The signal input end is connected with the pan-tilt motion signal output end of the computer 5, the infrared light source 4 is installed on the telephoto camera 2, and the telephoto camera 2 is installed on the two-degree-of-freedom rotary pan-tilt 3.

[0055] In the present embodiment, the binocular camera 1 is a Bumblebee...

specific Embodiment approach 2

[0056] Specific implementation mode two: combination figure 2 and image 3 Describe this embodiment, the concrete steps of a kind of remote iris tracking and acquisition method described in this embodiment are as follows:

[0057] Step 1. The binocular camera 1 performs three-dimensional positioning of the face: the binocular camera 1 detects the face, and obtains the three-dimensional coordinates of the face position through calculation. The specific steps are as follows:

[0058] Step 1 (1), preset processing information: set the size of the collected picture to 512×384, set the ROI to 100%, normalize the collected picture, set the size to 512×384, and preset the value range of the parallax is (0,150);

[0059] Step 1 (2), the binocular camera 1 collects pictures; through the binocular camera 1, the face is collected to obtain a collected picture of the face;

[0060] Step 1 (3), three-dimensional processing: obtain the corrected image and the depth image;

[0061] Step...

specific Embodiment approach 3

[0107] Specific implementation mode three: combination Figure 4 To illustrate this embodiment, the specific steps of step 1 (3) of the three-dimensional processing of a long-distance iris tracking and collection method described in this embodiment are as follows:

[0108] Ⅰ. Preprocessing: filter the collected pictures;

[0109] Ⅱ. Correct the picture;

[0110] Ⅲ. Image stereo matching: process the pre-processed collected images with the stereo matching method to obtain depth information. The matching calculation method is as follows:

[0111] min d min d max Σ i = - m 2 m 2 Σ j = - m 2 ...

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Abstract

The invention relates to a device for iris tracking and acquisition, and a method thereof and specifically relates to a device for remote iris tracking and acquisition, and a method thereof. An objective of the invention is to solve problems that an existing iris acquisition device cannot acquire information from long distance, that targets are needed to actively coordinate with the acquisition in an acquisition process, that the existing iris acquisition device is easy to be interfered by a plurality of targets, and that recognition algorithm precision is relatively low. A signal output end of a binocular camera is connected with a face information acquisition signal input end of a computer. A signal output end of a telephoto camera is connected with a signal input end of varied magnification and zoomed face information of the computer. A moving signal input end of a two-degree-of-freedom rotating holder is connected with a holder moving signal output end of the computer. An infrared source is fixed on the telephoto camera, and the telephoto camera is fixed on the two-degree-of-freedom rotating holder. The device and the method are used for remote iris tracking and acquisition.

Description

technical field [0001] The invention relates to an iris tracking and collecting device and a method thereof, in particular to a long-distance iris tracking and collecting device and a method thereof. Background technique [0002] Iris recognition technology is a kind of human biometric technology. The appearance of the human eye consists of three parts: sclera, iris, and pupil. The sclera is the white part of the eyeball, accounting for about 30% of the total area; the center of the eye is the pupil, accounting for about 5%; the iris is located between the sclera and the pupil, and contains the most abundant texture information, accounting for 65%. The formation of the iris is determined by genetics, and human gene expression determines the shape, physiology, color and overall appearance of the iris. When a person develops to about eight months, the iris basically develops to a sufficient size and enters a relatively stable period. Except for rare abnormal conditions, maj...

Claims

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Application Information

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IPC IPC(8): G06K9/00G06T7/00
Inventor 董岳吴立坤王川梅江元高会军
Owner 宁波智能装备研究院有限公司
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