No video adapters available

Question

Bram 2011-8-11

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评论： Friedrich 2014-4-17

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

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Youngjoo Seo 2014-4-16

编辑：Youngjoo Seo 2014-4-16

在 MATLAB Online 中打开

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 2014-4-17

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

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Answer 1

Friedrich 2011-8-11

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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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Answer 2

David Tarkowski 2011-8-11

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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.