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POopenNI interferes with cvCreateCameraCapture()
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copied!<p><br> I am using opencv 2.3 on ubuntu 11.04. while compiling, for completeness, I'd set WITH_OPENNI=ON. (regret it now, because I dont plan to use a kinect soon, and openni is giving me headaches with normal opencv programs)</p> <p>anyway, to test the opencv installation i compiled following code that shows me video from my laptop webcam:</p> <pre><code>#include <stdio.h> #include <string.h> #include "highgui.h" #include "cv.h" int main() { cvNamedWindow("Webcam",CV_WINDOW_AUTOSIZE); CvCapture* capture=cvCaptureFromCAM(0); IplImage* frame; while(1) { frame=cvQueryFrame(capture); if(!frame) break; cvShowImage("Webcam",frame); char c=cvWaitKey(33); if(c==27) break; } cvReleaseCapture(&capture); cvDestroyWindow("Webcam"); } </code></pre> <p>the code complies correctly but gives the following error on execution:</p> <blockquote> <p>OpenCV Error: Unspecified error (Failed to enumerate production trees: Can't create any node of the requested type!) in CvCapture_OpenNI, file /home/samarth/OpenCV-2.3.0/modules/highgui/src/cap_openni.cpp, line 188 terminate called after throwing an instance of 'cv::Exception' what(): /home/samarth/OpenCV-2.3.0/modules/highgui/src/cap_openni.cpp:188: error: (-2) Failed to enumerate production trees: Can't create any node of the requested type! in function CvCapture_OpenNI</p> </blockquote> <p>Aborted</p> <p>has anybody faced the same problem? any idea to cure this would be highly appreciated.</p>

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