python:在python中使用opencv进行摄像头编程初体验

闲着没事做，前段时间买了个摄像头，在ubuntu上用。打开cheese这个软件，一片空白，怎么不能用阿！

google一番，装上gspca，还是不能用！

用lsusb命令查看下

lingshangwen@eagle:~$ lsusb
Bus 005 Device 001: ID 0000:0000
Bus 004 Device 001: ID 0000:0000
Bus 003 Device 001: ID 0000:0000
Bus 002 Device 002: ID 0c45:5208 Microdia
Bus 002 Device 001: ID 0000:0000
Bus 001 Device 006: ID 058f:3820 Alcor Micro Corp.
Bus 001 Device 005: ID 0a12:0001 Cambridge Silicon Radio, Ltd Bluetooth Dongle (HCI mode)
Bus 001 Device 004: ID 05e3:0606 Genesys Logic, Inc. D-Link DUB-H4 USB 2.0 Hub
Bus 001 Device 001: ID 0000:0000

摄像头已经被识别出来，怎么就是不能用阿!!!!!!

还是自己动手，用python+opencv写段简单的代码吧，然后就有了下面的代码：

Python代码

1. importwx
2. fromopencv.cvimport*
3. fromopencv.highguiimport*
5. classMyFrame(wx.Frame):
6. def__init__(self):
7. wx.Frame.__init__(self,None,-1,’camera’)
8. self.SetClientSize((640,480))
10. self.cap=cvCreateCameraCapture(0)
11. self.Bind(wx.EVT_IDLE,self.onIdle)
13. defonIdle(self,event):
14. img=cvQueryFrame(self.cap)
15. self.displayImage(img)
16. event.RequestMore()
18. defdisplayImage(self,img,offset=(0,0)):
19. bitmap=wx.BitmapFromBuffer(img.width,img.height,img.imageData)
20. dc=wx.ClientDC(self)
21. dc.DrawBitmap(bitmap,offset[0],offset[1],False)
23. if__name__==“__main__”:
24. app=wx.App()
25. frame=MyFrame()
26. frame.Show(True)
27. app.MainLoop()

Python代码

1. importwx
2. fromopencv.cvimport*
3. fromopencv.highguiimport*
5. classMyFrame(wx.Frame):
6. def__init__(self):
7. wx.Frame.__init__(self,None,-1,’camera’)
8. self.SetClientSize((640,480))
10. self.cap=cvCreateCameraCapture(0)
11. self.Bind(wx.EVT_IDLE,self.onIdle)
13. defonIdle(self,event):
14. img=cvQueryFrame(self.cap)
15. self.displayImage(img)
16. event.RequestMore()
18. defdisplayImage(self,img,offset=(0,0)):
19. bitmap=wx.BitmapFromBuffer(img.width,img.height,img.imageData)
20. dc=wx.ClientDC(self)
21. dc.DrawBitmap(bitmap,offset[0],offset[1],False)
23. if__name__==“__main__”:
24. app=wx.App()
25. frame=MyFrame()
26. frame.Show(True)
27. app.MainLoop()

运行之

原文地址：http://eagle516.iteye.com/blog/428801