Mac webcam problem (videoinput)

Question

Alfredo Yanez 2014-6-10

1
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/133475-mac-webcam-problem-videoinput

回答： Thisal Selaka 2018-7-15

I am able to see my webcam using:

>>webcamlist
>>mycam=webcam

but I can't using video input.

Using imaqhwinfo I get:

>> imaqhwinfo
ans = 
      InstalledAdaptors: {'dcam'}
          MATLABVersion: '8.3 (R2014a)'
            ToolboxName: 'Image Acquisition Toolbox'
         ToolboxVersion: '4.7 (R2014a)
>>imaqhwinfo('dcam')
ans = 
         AdaptorDllName: '/Users/Fredy/Documents/MATLAB/Su...'
      AdaptorDllVersion: '4.7 (R2014a)'
            AdaptorName: 'dcam'
              DeviceIDs: {1x0 cell}
             DeviceInfo: [1x0 struct]
>> obj=videoinput('dcam')
Error using videoinput (line 233)
There are no devices installed for the specified ADAPTORNAME.
See IMAQHWINFO.

Using >>webcamlist I get the following information

>> webcamlist
ans = 
      'FaceTime HD Camera'

How can I access my webcam using video input

I have also tried:

>> obj=videoinput('FaceTime HD Camera')

and it didn't work.

Thanks in advance.

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Stefano 2015-10-1

在 MATLAB Online 中打开

Hi, I have the same problem with my Logitech C920, on Seven, R2014a.

webcamlist returns : ans =

    'Logitech HD Pro Webcam C920'
    'USB2.0 UVC HD Webcam'

but imaqhwinfo returns : ans =

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

So I can't use may Logitech C920 with videoinput.

Have you found a solution?

Thanks in advance.

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