Laser scanning-based bio-feature 3D four-dimensional data identification method and system

Abstract

The invention provides a laser scanning-based bio-feature 3D four-dimensional data identification method. The method comprises the steps of obtaining 3D data of a target object shot by a zoom camera after a laser beam emitted by a laser device is projected to the target object and is reflected to the zoom camera; performing identification locating on the 3D data; sending a moving instruction to alaser scanning module for multiple times to instruct the laser scanning module to change a collection position, thereby obtaining 3D data shot in multiple collection positions in a given time by the zoom camera; performing fusion modeling on the 3D data shot in the multiple collection positions to obtain 3D model data of the target object in the given time, thereby finishing reconstruction of thetarget object; and performing corresponding point cloud comparison to identify an identity of the target organism. The invention furthermore provides a 3D four-dimensional data identification system.The laser scanning module only adopts one laser device and one zoom camera, so that the cost is reduced; and the target object is wholly reflected through laser, without dead angles, so that the quality of photos shot by the zoom camera is higher, the data is easier to identify, and the accuracy is improved.

Description

technical field [0001] The invention relates to the technical field of image recognition, in particular to a laser scanning-based biometric 3D four-dimensional data recognition method and system. Background technique [0002] Biological characteristics are the inherent physiological or behavioral characteristics of living things, such as fingerprints, palm prints, irises or human faces. Biological characteristics have certain uniqueness and stability, that is, the difference between any two biological characteristics is relatively large, and biological characteristics generally do not change greatly over time, which makes biological characteristics very suitable for application In scenarios such as identity authentication or authentication information in the identification system. [0003] The current biometric data all use flat 2D data. Taking the biometric characteristics of the hand as an example, the 2D method is mainly used to identify the characteristics of one or sev...

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Problems solved by technology

[0003] The current biometric data all use flat 2D data. Taking the biometrics of the hand as an example, the 2D method is mainly used to identify the characteristics of one or several hands. Some criminals use the 2D pictures collected by the hands , imitating 2D hand features, cheating part of the recognition system, and bringing great security risks to personal information security; taking the biometric features of the head and face as an example, the application of data related to the head and face stays in simple pictures In terms of application, the head and face data can only be processed from a specific angle, and there will be some differences in the recognition process of individual facial expressions (such as: smiling or blinking), which brings certain difficulties to information recognition

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