衍射和干涉图像的计算机采集与分析系统

Computer acquisition and analysis system of diffraction and interference image

为实时得到光的干涉、衍射二维和三维图像中各点的光强及其分布情况,介绍了易于发生光的衍射和干涉的实验装置,通过使用视频采集卡将实验现象采集进入计算机,并用VC++编写具有实时视频、图像采集、二维和三维显示功能的软件对实验结果进行处理。对实验中的采集图像进行处理并得出其灰度值,在三维图中给与不同的灰度值以不同的颜色。结果表明该系统可以准确、逼真地显示出实验现象。

In order to get the real time light intensity and intensity distribution of certain point from the two-dimensional and three-dimensional image, we have set up an optical system which can be used to get diffraction and interference phenomena easily. Via video grabber, we can collect experimental results and send them to the computer, using the software with real-time video, image grabbing, two-dimension and three-dimension display to process, which is written with VC＋＋. At last, the experimental image has been processed and analyzed, and the gray values have been obtained, given the different gray values of three-dimensional diagram in difference color. The results show that accurate, realistic experimental phenomena can be showed by the system.