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Multi-target crowd iris image acquisition device and method

A technology of iris image and acquisition device, which is applied in the field of iris recognition, can solve the problem of limited imaging field of view, and achieve the effect of improving passenger flow, high precision and reducing complexity

Pending Publication Date: 2021-02-23
天津中科智能识别有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to solve the problem of limited imaging field of view in the field of iris recognition based on secondary imaging of two-degree-of-freedom controllable mirrors, and to provide an iris image acquisition device and method for multi-target crowds

Method used

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  • Multi-target crowd iris image acquisition device and method
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  • Multi-target crowd iris image acquisition device and method

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Embodiment Construction

[0063] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention.

[0064] see Figure 1-6 As shown, in the iris image acquisition device for multi-target groups of the present application, the base 1 is made of aluminum alloy, and there are 6 positioning holes fixed to the equipment and 4 threads connected to the vertical motor 2.1. In order to facilitate the wiring of the horizontal motor 3.1 and avoid the problem of moving windings, a rectangular groove is processed on the surface; the vertical motor 2.1 is installed under the two-degree-of-freedom turntable, and moves in the vertical direction around the vertical direction. The limit column 6.1 moves, and its motion turntable is connected with the vertical motion adapter 2.2 through 4 M6 scre...

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Abstract

The invention discloses a multi-target crowd iris image acquisition device and method. The device comprises a substrate, a vertical motor module, a horizontal motor module, a reflector, an objective table module, a motion limiting part, and a control system, and the substrate supports and fixes an overall two-dimensional turntable; the vertical motor module comprises a vertical motor and a vertical motion adapter plate; the horizontal motor module comprises a horizontal motor, a supporting plate, a horizontal movement adapter plate and a rolling bearing; the reflector is fixed on the objectivetable module, and the objective table module comprises an objective plate, an objective support and a fixing part and is fixed with the horizontal motor module; the multiple motion limiting pieces are installed at different positions. The control system comprises a driver, a PLC and a PC control card and controls the rotary table to move. The Iris camera is vertically installed. The device can effectively enlarge the iris recognition field of view, automatically adapts to targets with different heights in different directions and distances, and is high in speed and robustness.

Description

technical field [0001] The invention relates to the technical field of iris recognition, in particular to an iris image acquisition device and method for multi-target groups. Background technique [0002] At present, the methods for expanding the imaging field of view mainly include micro-camera array stitching, multi-camera image stitching, and bionic compound eyes. Micro-camera array splicing mainly utilizes the axial symmetry of ball lens imaging, combined with micro-camera array and later computational imaging technology, to achieve wide field of view and high-resolution imaging. The system includes a concentric optical main lens group and a micro-camera array composed of a series of small optical elements. Multi-camera image stitching is to stitch images taken by two or more cameras through a certain method to form an image with a larger field of view. The key point of stitching between multiple images is to use image registration method to stitch two or more digital ...

Claims

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Application Information

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IPC IPC(8): G06K9/00G06K9/20
CPCG06V40/18G06V10/147Y02P90/02
Inventor 孙哲南张堃博谭铁牛申振腾
Owner 天津中科智能识别有限公司
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