MATLAB: No video adapters available

adaptersImage Acquisition ToolboximaqhwinfolinuxvideoMATLABvideo4linux

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

Best Answer

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
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