looking for help about python-sane
- From: derek <derek@xxxxxxxxxxx>
- Date: Tue, 28 Feb 2006 23:23:38 +0800
I m looking for help about python-sane, The follow sample code try to grab the image from the webcam through a /dev/video0 on linux, it works fine for the first 185 times, but it freeze the computer when i ~ 185, I dont know why?
The computer become very busy when i > 160, very strange?
I m using Ubuntu 5.10 Linux
Thanks
-----------------------code start------------------
#! /usr/bin/python
import sane, time, Image
def grabImage(_webcam):
_webcam.mode='color'
_webcam.start()
img=_webcam.snap()
return img
for i in range(200):
print 'i=', i
sane.init()
webcam = sane.open('v4l:/dev/video0')
grabImage(webcam)
webcam.close()
sane.exit()
time.sleep(1)
----------------------code end-------------------
---------------------output--------------------
i=0
i=1
i=2
.....
i= 182
i= 183
i= 184
i= 185
Traceback (most recent call last):
File "testSane.py", line 17, in ?
grabImage(webcam)
File "testSane.py", line 7, in grabImage
_webcam.start()
File "/usr/lib/python2.4/site-packages/sane.py", line 201, in start
return self.dev.start()
_sane.error: Error during device I/O
.
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