基于LabVIEW的实时监控视频调用的三种模型研究
2020-02-22杨慧闻张嘉琪
杨慧闻 张嘉琪



摘要:当前各行业的各种类型的监控摄像头的安装越来越普及,在交通测流、检测车辆违章、银行安保、工厂运行监控、产品加工等各方面都需要进行实时监控,并且对所获取到的监控视频进行分析和视觉应用(包括但不限于测量测定、颜色处理、识别处理、定位引导等),为了解决监控摄像头的实时监控影像的在LabVIEW中的调用,提出了三种基于LabVIEW平台上的针对两种不同类型(ip摄像头,usb摄像头)的监控视频画面的实时调用,利用LabVIEW平台的视觉图像处理模块VDM(Vision Development Module)、视频流SDK二次开发、VLC多媒体播放器调用等技术编写程序模型,实现实时监控画面在LabVIEW中的调用。
關键词:实时预览;LabVIEW;SDK二次开发;VDM
中图分类号:TP311.1 文献标识码:A
文章编号:1009-3044(2020)36-0238-05
Abstract: at present, the installation of various types of surveillance cameras in various industries is becoming more and more popular, which needs real-time monitoring in traffic flow measurement, vehicle violation detection, bank security, factory operation monitoring, product processing and other aspects, as well as analysis and visual application of the obtained surveillance video (including but not limited to measurement and measurement, color processing, identification processing, setting In order to solve the call of the real-time monitoring image of the monitoring camera in LabVIEW, three kinds of real-time calls for two different types of monitoring video images (IP camera, USB camera) based on LabVIEW platform are proposed, and the vision development module VDM (vision development) of LabVIEW platform is used Module), secondary development of video stream SDK, call of VLC multimedia player and other technologies are used to write program models to realize the call of real-time monitoring screen in LabVIEW.
Key words: Live preview; LabVIEW; SDK secondary development; VDM
1 背景
当前随着我国经济的快速发展和消费者安全意识的逐渐提高,各个行业的根据其自身需求,都会大量使用到各种类型的实时监控摄像头,促使监控摄像头在视频影像主流应用层面快速发展。尤其是在这些场景下: 测定/测量包括原始零件的测量、关键尺寸的检查、角度、范围、直径、尺寸、中心线、垂直等的测定;图像识别和图像处理包括图像的标识、字符、二维码、条码的定位、图像的灰度化、二值化处理和图像的准确识别;定位/引导包括先进的自动化技术或机器人设备、零部件的高精度装配和完成其他精细生产工艺[1]。虽然实时监控摄像头产品作为前端应用产品其技术的发展也已经可以到达4k左右的规模,但对于其后端产品相关技术的深入研究和应用存在一定的不足,尤其在如何实现实时的监控视频影像在其开发应用平台过程中的管理和调用是其面临的主要技术问题之一。……
