Camera access problem in matlab

3 次查看（过去 30 天）
Lalit Patil
Lalit Patil 2012-12-12
I have a PPT vision's lan port connected camera..
I want to access it in MATLAB..
Image aquisition toolbox doesn't shows its information.
So, how to access it..?
  2 个评论
Walter Roberson
Walter Roberson 2012-12-12
Is "PPT" in this context "PowerPoint" ?
Lalit Patil
Lalit Patil 2012-12-12
No, it is the company of camera...

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回答（2 个）

Image Analyst
Image Analyst 2012-12-12
Are you using Windows? Does the camera show up in Device Manager? If it doesn't show up there, then it won't be seen in imaqtool. If Windows does see it, then you should contact the manufacturer or the Mathworks to see which of several video "adapters" is supposed to see your camera. Some adapters are written by the Mathworks and some are written by the camera manufacturers.
What do you see when you do this:
hardwareInfo = imaqhwinfo % Print what cameras are there.
adaptorNames = hardwareInfo.InstalledAdaptors
% Might look something like:
% InstalledAdaptors: {'dcam' 'gentl' 'gige' 'PPT' 'lumeneraimaqw64' 'matrox' 'winvideo'}
matches = strfind(adaptorNames, 'PPT');
% Find out which index is the PPT Camera.
PPTIndex = find(~cellfun(@isempty, matches))
thePPTAdaptor = adaptorNames{PPTIndex}
  2 个评论
Lalit Patil
Lalit Patil 2012-12-14
编辑：Lalit Patil 2012-12-14
I am using windows..
And in Device manager in Imaging devices only it shows webcam..
After first two lines it shows
InstalledAdaptors: {'coreco' 'winvideo'}
MATLABVersion: '7.7 (R2008b)'
ToolboxName: 'Image Acquisition Toolbox'
ToolboxVersion: '3.2 (R2008b)'
adaptorNames =
'coreco' 'winvideo'
But it is a laptop webcam..
It shows mathes = [] []
Image Analyst
Image Analyst 2012-12-14
Like David says, your camera is not supported with an adapter. Contact the manufacturer or select a different, supported camera.

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David Tarkowski
David Tarkowski 2012-12-13
Image Acquisition Toolbox does not support these cameras and I can't find any indication that PPT Vision provides MATLAB support for these cameras, either. You could write an adaptor (or convince PPT Vision to do so) for the Image Acquisition Toolbox using the toolbox's adaptor kit which would allow these cameras to be used with the toolbox. However, these cameras appear to be smart cameras, so even if somebody were to create an adaptor, only a small percentage of the camera's functionality would be available via the toolbox.

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