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。-Crawl into an image memory, the use of ConvertBayer2Rgb converted to RGB 24-bit format bitmap, and then directly from the memory to read image data, save data to a BMP file. Image size is determined by the video output window and video formats identified.