How to add the format to Image acquisition toolbox?

Hello, every one.

I have a question about my code. There is something wrong when I coding the example from image acquisition.

    % Access an image acquisition device.
    vidobj = videoinput('winvideo', 1, 'RGB24_320X240');
  end

but my computer shows that:

The FORMAT specified is not supported by this device.

Because when I debug

   info=imaqhwinfo('winvideo');
   info.DeviceInfo.SupportedFormats;

The lists of SupportedFormats do not include RGB, so what can I do to add RGB into this?

Thanks for your kindness.

Hang Yang

Answer 1

[Walter Roberson]

Specify one of the color formats that the device supports. But then specify 'ReturnedColorSpace', 'rgb'

https://www.mathworks.com/help/imaq/returnedcolorspace.html

[Y]

Thanks a lot.

   info=imaqhwinfo('winvideo');
   vid=videoinput('winvideo',1,'YUY2_800x600');
   vidReturnedColorspace='rgb';% originally it was ycrcb
   img=getsnapshot(vid);

I have still one question about that.

In the workplace,i find the size of img =600x800x3 unit8， why originally I set 800x600, now it reverse, I have meet this problem several times.

[Walter Roberson]

Nothing comes to mind, sorry.