webcamExampleMATLAB output image has a green mask and cannot detect the blue color

I 'm running the webcamExampleMATLAB from this package

https://www.mathworks.com/matlabcentral/fileexchange/64534-getting-started-with-matlab-simulink-and-ros

as shown in this tutorial

https://www.youtube.com/watch?v=KPlzSsWWfLE&t=1134s

but the image from the camera has a green mask as shown and cannot detect the blue color

compared to the tutorial output

The changes i did to run my code was mandatory to run the code in my machine

first detect the camera name

using:

 dev_info=imaqhwinfo('linuxvideo', 1)

the output:

 dev_info = 

  struct with fields:

             DefaultFormat: 'YUY2_1280x720'
       DeviceFileSupported: 0
                DeviceName: '/dev/video0'
                  DeviceID: 1
     VideoInputConstructor: 'videoinput('linuxvideo', 1)'
    VideoDeviceConstructor: 'imaq.VideoDevice('linuxvideo', 1)'
          SupportedFormats: {1×45 cell}

and edit the webcamExampleMATLAB.m line 7 as

 myCam = imaq.VideoDevice('linuxvideo',1,'YUY2_1280x720','ReturnedDataType','uint16');

Also i test the camera using matlab to be sure that it's working fine using this comands

 mycam = webcam

then

 preview(mycam)

and it works fine as shown

Answer 1

[Image Analyst]

Rather than YUV, is RGB available as a format?

[Ahmed Magdy]

Thanks for this note

I follow this tutorial to get the available RGB format for my laptop intergrated camera and now the code works well.

https://www.mathworks.com/help/imaq/identifying-available-devices.html