Comments on: Capturing frames from a webcam on Linux http://www.jperla.com/blog/2007/09/26/capturing-frames-from-a-webcam-on-linux/ The site design looks balanced when this sentence is long Wed, 07 Jan 2009 13:23:15 +0000 http://wordpress.org/?v=2.7-almost-beta-9300 hourly 1 By: Mir http://www.jperla.com/blog/2007/09/26/capturing-frames-from-a-webcam-on-linux/#comment-2084 Mir Mon, 29 Dec 2008 11:16:23 +0000 http://www.jperla.com/blog/2007/09/26/capturing-frames-from-a-webcam-on-linux/#comment-2084 doesnt work with me in ubuntu 8.10 Traceback (most recent call last): File "web.py", line 30, in im = get_image() File "web.py", line 15, in get_image tmp = opencv.cvGetMat(im) File "/var/lib/python-support/python2.5/opencv/cv.py", line 3826, in cvGetMat return _cv.cvGetMat(*args) RuntimeError: openCV Error: Status=Null pointer function name=cvGetMat error message=NULL array pointer is passed file_name=cxar doesnt work with me in ubuntu 8.10

Traceback (most recent call last):
File “web.py”, line 30, in
im = get_image()
File “web.py”, line 15, in get_image
tmp = opencv.cvGetMat(im)
File “/var/lib/python-support/python2.5/opencv/cv.py”, line 3826, in cvGetMat
return _cv.cvGetMat(*args)
RuntimeError: openCV Error:
Status=Null pointer
function name=cvGetMat
error message=NULL array pointer is passed
file_name=cxar

]]> By: Steve B http://www.jperla.com/blog/2007/09/26/capturing-frames-from-a-webcam-on-linux/#comment-2079 Steve B Mon, 22 Dec 2008 10:53:53 +0000 http://www.jperla.com/blog/2007/09/26/capturing-frames-from-a-webcam-on-linux/#comment-2079 Cool! I will be trying this out very soon, I think you have saved me a bit of work! This was the first thing Google brought me, and probably all I need to get started! Cool! I will be trying this out very soon, I think you have saved me a bit of work!
This was the first thing Google brought me, and probably all I need to get started!

]]> By: Busman http://www.jperla.com/blog/2007/09/26/capturing-frames-from-a-webcam-on-linux/#comment-1963 Busman Wed, 05 Nov 2008 15:01:26 +0000 http://www.jperla.com/blog/2007/09/26/capturing-frames-from-a-webcam-on-linux/#comment-1963 Hey thanks a lot! Work very nice with my camera, good work!, Busman. Hey thanks a lot!

Work very nice with my camera, good work!, Busman.

]]> By: kpoman http://www.jperla.com/blog/2007/09/26/capturing-frames-from-a-webcam-on-linux/#comment-1916 kpoman Wed, 22 Oct 2008 01:35:18 +0000 http://www.jperla.com/blog/2007/09/26/capturing-frames-from-a-webcam-on-linux/#comment-1916 Hi, I had to slightly modify it to run on ubuntu 8.04: def get_image(): im = highgui.cvQueryFrame(camera) # this one is the new line to make it work tmp = opencv.cvGetMat(im) #convert Ipl image to PIL image return opencv.adaptors.Ipl2PIL(tmp) Hi,
I had to slightly modify it to run on ubuntu 8.04:

def get_image():
im = highgui.cvQueryFrame(camera)
# this one is the new line to make it work
tmp = opencv.cvGetMat(im)
#convert Ipl image to PIL image
return opencv.adaptors.Ipl2PIL(tmp)

]]> By: Ram-on Agmon http://www.jperla.com/blog/2007/09/26/capturing-frames-from-a-webcam-on-linux/#comment-1906 Ram-on Agmon Tue, 07 Oct 2008 18:33:17 +0000 http://www.jperla.com/blog/2007/09/26/capturing-frames-from-a-webcam-on-linux/#comment-1906 Hello Man. 10x, I checked around 5 other examples and this one works like a charm. Shalom, Ram-on. Hello Man.

10x, I checked around 5 other examples and this one works like a charm.

Shalom,
Ram-on.

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