基于DirectS how技术船用钢板图像采集设计与实现

摘要

In this paper,an image acquisition system,based on DirectShow,is built to capture images of the three dimensional size of ship plate on Windows platform,which provides a plan for measurement of the large-size object.First,the basic system of DirectShow is analyzed,then the application′s environment overall layout and overall design of the image acquisition system are shown next,by the analysis of common video acquisition, the implementation of image acquisition system is presented for USB camera.Based on the MFC framework imple-mentation,including the building of equipment source Filter,the Filter Graph structure design,besides,the key Filter has been researched and developed in this system.The design realizes real-time monitoring of the applica-tion environment and image acquisition.Experimental results demonstrate the feasibility and correctness of the design and implementation.%基于DirectShow技术，在Windows平台下构建测量船用钢板三维尺寸的图像采集系统，为大尺寸物件的测量提供了一种信息采集方案。首先分析了DirectShow技术基本体系，接着介绍了该系统的应用环境整体布局以及采集系统总体设计方案，其次通过对常见的视频采集卡进行分析，给出了针对USB摄像头，基于MFC框架的图像采集系统实现过程，包括设备Filter的构建，Filter Graph结构设计，开发了本系统所用到的抓图Filter，实现对应用环境画面的实时监控和采集，通过实验表明设计方案的可行性和正确性。