My Basler camera suddenly stopped working for no reasons

basler

asked 2019-08-26 08:02:13 -0600

Greetings,

my problem is a vague one. Let me explain. I have a Basler camera (I think this might be the most important information about my problem). Me and my team worked with it for a long moment (2 months and a half) with the OpenCV library, everything worked well, more specifically the stream capture, until it didn't for no reason at all. We tried everything : we came back to an old version of the code, we changed the library version (3.4.6 or 3.4.7 or 4.1.1), we uninstalled-reinstalled the driver, we changed the OS to a linux one instead of Windows and we even tried an other camera (VRmC-16+/BW) but both don't work. Every time we execute the simplest test lines :

cv::VieoCapture* videoCapture = new cv::VideoCapture(0);
if (!videoCapture->isOpened()) std::cout << "Cannot open the video camera" << std::endl;

We get the message on the shell. Have you any idea what kind of tests I could make to know where the problem comes from ? I feel like it has to do with the OS not recognizing it but literally nothing changed from one night to the next morning : no windows update, no library update, no code changing. Beside, I can use the camera with the software Pylong Viewer so that confuses me even more (I'm using Windows 7).

The model of the camera is : Basler ace USB3 Vision Camera. It's a pretty expensive one with high performances so we would like to know solutions apart from "get an other one".

The only thing that worked is a webcam.

Sorry if the problem is vague but we are as confused as you are.

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//.... Initialize the camera according to the camera class you want to use Cam.Open(); W=Cam.Width.GetValue();H=Cam.Height.GetValue(); //.... start the capturing with the chosen grab strategy Cam.RetrieveResult( 1000, ptrGrabResult, TimeoutHandling_ThrowException); char* buffer=ptrGrabResult->GetBuffer(); cv::Mat image(H,W,CV_8UC3,buffer); //.... process the image in OpenCV

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Thanks for your help. I did what you said : I used the library that Pylon uses and it works. Now I will test your code.

I am still frustrated by the "why suddenly it didn't work ?!".

Anuta Christian ( 2019-08-30 06:05:22 -0600 )edit

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My Basler camera suddenly stopped working for no reasons

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My Basler camera suddenly stopped working for no reasons