这是一个Linux下的USB摄像头捕捉程序，是一个调用v4l2 （Video for Linux 2）非常好的例子。英文介绍为：This is a driver for the USB video bridge USBVision from Zoran/Nogatech, a USB-only cable used in many \"webcam\" devices. It supports streaming and capture of color or monochrome video

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Robust Non-negative Dictionary Learning for Visual Tracking The provided codes could be either embedded into the benchmark framework of paper Online Object Tracking: A Benchmark (CVPR2013) (You can find details here: http://visual-tracking.net/) or