Remote iris intelligent imaging device and method

Abstract

The invention discloses a remote iris intelligent imaging device and a method. The device comprises an optical system I for depth imaging, an optical system II for obtaining optical field data, an integrated near-infrared source, a data transmission module, a cache unit, a control input device, a display device, a logic control unit and a processing unit. According to the device and the method, lens arrays and multi-sensor optical systems are constructed to obtain the optical field data, head posture estimation, face detection and human eye detection technologies are used for achieving an intelligent man-machine interactive mode, and image processing methods such as image enhancement, mosaic, multiple focusing are combined to achieve remote iris imaging with the large depth of field; and practicability of the iris recognition technology is improved, the application range of the iris recognition system is expanded, and the device and the method play an important role in promoting research and application development of iris biometric recognition.

Description

technical field [0001] The invention belongs to the technical fields of optical engineering, biological feature recognition, image processing and computer vision, and in particular relates to a long-distance iris intelligent imaging device and method, which are used to realize large depth of field, high-quality, multi-target iris intelligent imaging. Background technique [0002] Iris recognition in biometric recognition has the advantages of good uniqueness, high accuracy, and strong stability, and has a broad market prospect. Among them, iris imaging is the basis of iris recognition, which directly restricts the accuracy and efficiency of the recognition process. [0003] At present, the iris recognition patent products with relatively mature commercial applications (such as CN1416779A, CN1282048A, CN1752990A, CN1439998A, JP2001215109A, etc.) mostly use low-pixel and short-focus lenses, and add prompt devices such as voice and display instructions to obtain information by ...

AI Technical Summary

Problems solved by technology

[0007] However, there are still some problems in the direct application of the existing light field camera technology to the field of long-distance iris imaging. Firstly, the calculation amount of the algorithm is large, which affects the imaging speed of the real-time system; secondly, the refocus point needs to be manually specified, which cannot meet the actual needs of the iris imaging system.

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