ubuntu 下安装摄像头驱动

sudo apt-get install cheese

sudo apt-get install camorama

然后可以打开应用cheese，观察可以得到图像。

也可以通过代码获取图像。python代码如下：

 import cv2.cv as cv  

 import time  

 if __name__ == '__main__':  

     cv.NamedWindow("camera",1)
         capture = cv.CaptureFromCAM(0)
     num = 0;
     while True:
         img = cv.QueryFrame(capture)
         cv.ShowImage("camera",img)  

         key = cv.WaitKey(10)
         if key == 27:
         break
         if key == ord(' '):
         num = num+1
         filename = "frmaes_%s.jpg" % num
         cv.SaveImage(filename,img)  

     del(capture)
     cv.DestroyWindow("camera")