演示保存一幅BMP文件到指定目录。

利用HVSnapShot抓取一帧图像到内存，利用ConvertBayer2Rgb 转换成RGB 24位格式位图，然后直接从内存读取图像数据，保存数据到BMP文件。图像的大小由视频输出窗口和视频格式确定。-BMP file save a presentation to a specific directory. The use of an image HVSnapShot crawl into memory, using ConvertBayer2Rgb converted to RGB 24-bit format bitmap, and then read directly from the memory image data, save data to a BMP file. The size of images from the video output window and video formats to determine.