Iris identification device by using camera array and multimodal biometrics identification method

Abstract

The invention relates to an iris identification device by using a camera array and a multimodal biometrics identification method. The system comprises a plurality of cameras, a support structure, an indication unit, a light source, an acquisition card, a computer, and the like, wherein positions of the plurality of cameras can be freely arranged as required. The identification method is implemented according to the following steps that: a person stands naturally and aligns eyes with one of the cameras according to hints; the camera array is started, and each camera starts to acquire images; the computer circularly processes the images of the plurality of cameras at regular intervals and performs human eye detection respectively; and when a human eye image is detected in a path of signal, the path of the image is intensively processed and iris identification is performed. Based on the camera array device, the iris system can acquire iris images at different positions and different heights, so the acquisition range is widened, and the usability of the iris identification system is improved.

Description

technical field [0001] The invention belongs to the technical fields of image processing, pattern recognition, multi-sensor and computer control, and specifically relates to an iris recognition device and method based on a camera array, which are applied in the fields of biological feature recognition and public safety. Background technique [0002] Security technology based on biometric identification is widely used in daily life and in the security field, and has great market application prospects. The goal of biometric identification is to achieve fast and accurate identification or authentication, and it is expected to be applied in the identification of large-scale crowds. [0003] Among biometric identification technologies, iris recognition technology has the advantages of high accuracy, strong uniqueness, and good anti-counterfeiting, which is very suitable for identity authentication of large-scale groups of people. However, the disadvantage of iris recognition is t...

AI Technical Summary

Problems solved by technology

[0003] Among biometric identification technologies, iris recognition technology has the advantages of high accuracy, strong uniqueness, and good anti-counterfeiting, which is very suitable for identity authentication of large-scale crowds. However, the disadvantage of iris recognition is that it is very difficult to obtain iris images. Inconvenient to use

[0004] Existing iris recognition patent products (such as Chinese patents CN1282048, CN1416779, CN1584917, CN1752990, CN1439998, etc.) all use one or two cameras for recognition, and the shooting range is very narrow, which cannot adapt to users of different heights

There are some systems that use a rotating device to automatically align the camera to the eye area of ​​the person, but this device can accommodate users of different heights, but the disadvantage is that it is slower

Some systems use high-resolution cameras, but such devices are expensive and have slow image transmission speeds, making them impractical

In short, the shooting range of a camera is very limited and cannot adapt to complex application scenarios. Only by using multiple cameras can the purpose of flexibility and convenience be achieved.

[0005] On the other hand, most of the existing iris devices can only work at a very short distance (about 0.5 meters), which is very inconvenient for users to use; while most of the iris cameras at long distances (above 1 meter) are expensive and not suitable for practical use

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