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Why MATLAB R2014a can not recognize my usb camera, while my camera works fine with amcap ?

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Xiang
Xiang on 10 Apr 2014
Answered: Hakan Basargan on 4 Nov 2019
My usb camera works fine with amcap ,but R2014a hardware browser can not see my camera.
The result of imaqhwinfo is below
>> imaqhwinfo
ans =
InstalledAdaptors: {}
MATLABVersion: '8.3 (R2014a)'
ToolboxName: 'Image Acquisition Toolbox'
ToolboxVersion: '4.7 (R2014a)'
<<
>>

  2 Comments

John Porter
John Porter on 15 Apr 2016
I have the same problem, but I have already installed OS Generic Video on my linux computer. When I type in imaqhwinfo I get:
imaqInfo =
InstalledAdaptors: {'dcam' 'gentl'}
MATLABVersion: '9.0 (R2016a)'
ToolboxName: 'Image Acquisition Toolbox'
ToolboxVersion: '5.0 (R2016a)'
From what I read, it seems like I want linuxvideo but its not there. The camera I'm using is ELP-USB500W02M-L21, and it works fine on a windows computer but not linux.
Any help is greatly appreciated!!
Madhura Suresh
Madhura Suresh on 18 Apr 2016
Hi John,
The 'linuxvideo' (OS Generic Video interface) uses the gstreamer 0.10 system libraries to access the camera. The application "cheese" also uses gstreamer. Can you see you camera when you use cheese? If not, install gstreamer 0.10 libraries, and make sure cheese is working before trying this in MATLAB.
Madhura

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Accepted Answer

Friedrich
Friedrich on 10 Apr 2014
Edited: Friedrich on 10 Apr 2014
Hi,
look at the line
InstalledAdaptors: {}
You don't have any adaptor installed. Please install at least winvideo and you cam should be detected. In order to install the adaptors run
>>supportPackageInstaller
and follow the instructions (choose the OS Generic Video Interface a.k.a winvideo adaptor later on)

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Xiang
Xiang on 11 Apr 2014
I am sure I firstly tried install 'USB Webcams' package, but it did not work. I don't know why..
Image Analyst
Image Analyst on 11 Apr 2014
Do you have a full version of R2014a (not a student version)? If so, you have the support contract so call them and ask them.

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More Answers (6)

Image Analyst
Image Analyst on 10 Apr 2014
R2014a now lets users connect to a web cam through an "Add on" that you can install from the tool ribbon. It does not need or require the Image Acquisition Toolbox. It also seems a bit easier to use than the IATB. Go here for more info: http://www.mathworks.com/support/2014a/matlab/8.3/demos/webcam-support.html

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elham sa
elham sa on 6 Jul 2015
I have a similar problem.
I was able to connect my built-in webcam to Matlab by installing support packages for OS Generic Video Interface.
but I want to connect my Canon EOS camera (connects thru USB). Which support package should I install?

  1 Comment

Image Analyst
Image Analyst on 7 Jul 2015
Call them and ask it the Image Acquisition Toolbox will work for your camera. Does your EOS camera not show up in Windows Device Manager?

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Harold Chate
Harold Chate on 11 Apr 2016
I have a similar problem, My problem is solved. I choose the OS Generic Video Interface. thank you for your answer.

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Yash Kant
Yash Kant on 1 Jan 2017
My machine runs on Ubuntu and I found that apart from OS Generic Video interface, GStreamer is also required for the hardware to be detected.

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