DSP达芬奇DM6437平台上实现画中画功能。支持双路摄像头拍摄视频，以画中画的形式显示。-DaVinci DM6437 DSP platform to achieve PIP function. Dual camera support video recording, picture in picture form to show.

video processing in DM6437: sobel edge detection using IMGLIB Texas Instruments library. Spits the ouput video singal: in left side there is video analog input from camera, and the right side this video with edge detection. Also is used OSD for blend