基本的图像采集流程：
本文通过实现一个简单的运动检测程序来说明创建图像采集程序。
本程序通过对平面上未来图像帧进行像素对像素的比较类完成运动检测。
如果没有物体运动，那么各帧的像素值保持不变。否则，对应像素的值将发生变化。(Basic image acquisition process:
In this paper, a simple motion detection program is implemented to illustrate the creation of image acquisition programs.
This procedure through the future image frame on the pixel to pixel comparison class, complete motion detection.
If there is no object movement, the pixel values of each frame remain unchanged. Otherwise, the value of the corresponding pixel changes)