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

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)'

<<

>>

[John Porter]

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]

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

Answer 1

[Friedrich]

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)

[Xiang]

Thanks a lot! I installed a wrong package named 'USB Webcams',and I wonder why this package doesn't work?

[Image Analyst]

That's the name of the Official Mathworks web cam add-on. Are you using that one, or someone else's third party package? If it's the Mathworks add-on, why do you say it's the wrong one?

[Xiang]

I am sure I firstly tried install 'USB Webcams' package, but it did not work. I don't know why..

[Image Analyst]

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.

[Xiang]

Thank you for your help

Answer 2

[Image Analyst]

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

[Xiang]

I have tried your suggestion, but it did not work

[Image Analyst]

Worked for me. Did you try what they showed you in the video tutorial?

[Kazim Hanbay]

Thanks your answer. My problem is solved. I choose the OS Generic Video Interface.

Answer 3

[Shankar Subramanian]

Hi Xiang and Kazim,

This page may help in the future for other adaptors that you may look to work with - Mapping Adaptor/Hardware to corresponding Support Packages

Thanks

Shankar

Answer 4

[elham sa]

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?

[Image Analyst]

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?

Answer 5

[Harold Chate]

I have a similar problem, My problem is solved. I choose the OS Generic Video Interface. thank you for your answer.

Answer 6

[Yash Kant]

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.

Answer 7

[Hakan Basargan]

Installing Image Acquisition Toolbox Support Package for OS Generic Video Interface might solve your problem :

https://www.mathworks.com/matlabcentral/fileexchange/45183-image-acquisition-toolbox-support-package-for-os-generic-video-interface