MATLAB: Unable to detect IDS uEye camera

2012bcameraimage acquisitionMATLAB

Hi,
I have a matlab 2012b installation with the Image Acquisition Toolbox Version 4.4 and want to record from my IDS uEye camera which should be DirectShow compatible.
Using the detectedDecice Uitility from mathwork ( http://de.mathworks.com/hardware-support/directshow.html ) the camera is detected by the winvideo driver.
But if I run imaghwinfo('winvideo') there is no camera found.
I tried to get this Webcam support package ( http://www.mathworks.com/matlabcentral/fileexchange/45182-matlab-support-package-for-usb-webcams ) but it seems to be available only for Matlab 2014>
Do you have any suggestions on how to access this camera?
Thank you! Manuel

Best Answer

I didn't get far using this route (it was my initial plan and I purchased the IMAQ toolbox just for this purpose). Anyway, the way to go is to connect through the .NET interface, here is an example:
Using the .NET assembly is not quite as straightforward as with C# because Matlab does not directly support pointers, but there is a workaround as pointed out below.
Remember to "EXIT" your camera before trying to re-initialise the same camera
%   Add NET assembly if it does not exist
%   May need to change specific location of library
asm = System.AppDomain.CurrentDomain.GetAssemblies;
if ~any(arrayfun(@(n) strncmpi(char(asm.Get(n-1).FullName), ...
        'uEyeDotNet', length('uEyeDotNet')), 1:asm.Length))
    NET.addAssembly(...
        'C:\Program Files\IDS\uEye\Develop\DotNet\signed\uEyeDotNet.dll');
end
%   Create camera object handle
cam = uEye.Camera;
%   Open 1st available camera
%   Returns if unsuccessful
if ~strcmp(char(cam.Init), 'SUCCESS')
    error('Could not initialize camera');
end
%   Set display mode to bitmap (DiB)
if ~strcmp(char(cam.Display.Mode.Set(uEye.Defines.DisplayMode.DiB)), ...
        'SUCCESS')
    error('Could not set display mode');
end
%   Set colormode to 8-bit RAW
if ~strcmp(char(cam.PixelFormat.Set(uEye.Defines.ColorMode.SensorRaw8)), ...
        'SUCCESS')
    error('Could not set pixel format');
end
%   Set trigger mode to software (single image acquisition)
if ~strcmp(char(cam.Trigger.Set(uEye.Defines.TriggerMode.Software)), 'SUCCESS')
    error('Could not set trigger format');
end
%   Allocate image memory
[ErrChk, img.ID] = cam.Memory.Allocate(true);
if ~strcmp(char(ErrChk), 'SUCCESS')
    error('Could not allocate memory');
end
%   Obtain image information
[ErrChk, img.Width, img.Height, img.Bits, img.Pitch] ...
    = cam.Memory.Inquire(img.ID);
if ~strcmp(char(ErrChk), 'SUCCESS')
    error('Could not get image information');
end
%   Acquire image

if ~strcmp(char(cam.Acquisition.Freeze(true)), 'SUCCESS')
    error('Could not acquire image');
end
%   Extract image

[ErrChk, tmp] = cam.Memory.CopyToArray(img.ID); 
if ~strcmp(char(ErrChk), 'SUCCESS')
    error('Could not obtain image data');
end
%   Reshape image

img.Data = reshape(uint8(tmp), [img.Width, img.Height, img.Bits/8]);
%   Draw image

himg = imshow(img.Data, 'Border', 'tight');
%   Acquire & draw 100 times
for n=1:100
    %   Acquire image
    if ~strcmp(char(cam.Acquisition.Freeze(true)), 'SUCCESS')
        error('Could not acquire image');
    end
      %   Extract image
      [ErrChk, tmp] = cam.Memory.CopyToArray(img.ID); 
      if ~strcmp(char(ErrChk), 'SUCCESS')
          error('Could not obtain image data');
      end
      %   Reshape image
      img.Data = reshape(uint8(tmp), [img.Width, img.Height, img.Bits/8]);
      %   Draw image
      set(himg, 'CData', img.Data);
      drawnow;
  end
%   Close camera
if ~strcmp(char(cam.Exit), 'SUCCESS')
    error('Could not close camera');
end
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