No video adapters available

I have a clean installation of Ubuntu 11.04 64bit and Matlab 2011a 64bit. I also have a Logitech webcam that works properly in 'Cheese Webcam Booth'. But when I execute imaqhwinfo the list of InstalledAdapters is empty.

Does anyone know how solve this?

 >> imaqhwinfo

 ans = 

     InstalledAdaptors: {}
         MATLABVersion: '7.12 (R2011a)'
           ToolboxName: 'Image Acquisition Toolbox'
        ToolboxVersion: '4.1 (R2011a)'

I installed video4linux without any success:

 $ sudo apt-get install libv4l-dev

And I also tried to register linuxvideo manually:

 >> imaqregister('/usr/local/MATLAB/R2011a/toolbox/imaq/imaqadaptors/glnxa64/
    mwlinuxvideoimaq.so')

 ans = 

    Empty cell array: 0-by-1

[Youngjoo Seo]

I've got a same issue on my Matlab! v2014a

I use window 7 64bit ans =

    InstalledAdaptors: {}
        MATLABVersion: '8.3 (R2014a)'
          ToolboxName: 'Image Acquisition Toolbox'
       ToolboxVersion: '4.7 (R2014a)'

Is there anybody who knows how to handle this problem?

[Friedrich]

in 14a you also have to run the supportPackageInstaller in order to install further adaptors, e.g. OS generic video

Answer 1

[Friedrich]

Hi,

Image Acquisition Toolbox requires Video 4 Linux 2. It looks like your have installed V4L1:

http://www.mathworks.com/help/releases/R2011a/toolbox/imaq/bspvsdn.html#bspvsft

Answer 2

[David Tarkowski]

Bram,

This is an issue that we've recently discovered with Ubuntu 11.04 that we're still investigating. For now, the easiest thing is probably to move the files other than mwlinuxvideoimaq.so out of the toolbox/imaq/imaqadaptors/glnxa64 directory and then restart MATLAB.

Answer 3

[Bram]

Thanks for you reply! I think you're right, but I can't find how to install V4L2... I tried:

 $ sudo apt-get install libpt-1.10.10-plugins-v4l2

But that didn't solve it.

Answer 4

[Bram]

Wow, interesting solution, but it definitely does the trick!

Thank you very much!