针对行人目标的激光炫目器自动调焦系统设计  

Laser Dazzler with Automatic Focal Length Adjustment for Pedestrians

作　　者：崔洪胜 蒋涛[1] Cui Hongsheng;Jiang Tao(School of Automation,University of Science and Technology Beijing,Beijing 100083,China)

机构地区：[1]北京科技大学自动化学院,北京100083

出　　处：《激光与光电子学进展》2021年第12期357-368,共12页Laser & Optoelectronics Progress

摘　　要：某型警用激光眩目器主要应用于安防领域,发射对人眼较敏感的532nm绿激光照射人体目标,可以使嫌疑人目标暂时性失去视力。为提高激光利用率,需要使激光光斑尽可能覆盖有效人体目标范围。测试时使用摄像机获取视频,利用Gentle Adaboost算法,通过基于数字信号处理器(DSP)的视频处理系统实现了行人目标检测及测定行人大小,同时通过单片机控制电路,根据行人大小控制激光镜头自动调焦,以适应行人目标。Police laser blinding devices are primarily used in the field of security.A human target will lose vision temporarily when exposed to the green laser emitted by the device because the human eye is sensitive to the 532-nm green laser.The laser light must cover the target human body as much as possible to improve utilization of the laser.This subject obtains video from the camera and detects pedestrian targets through a video processing system based on digital signal processing(DSP)using the Gentle Adaboost algorithm.The detection results include the size and location of the pedestrian targets.According to the size of the pedestrian,a single chip microcomputer control circuit controls the laser lens to focus on pedestrian targets automatically to accommodate pedestrian targets.

关 键 词：测量 行人检测 HAAR特征 Gentle Adaboost算法 数字信号处理 激光调焦 

分 类 号：TH74[机械工程—光学工程]