Using Webcam in GUI to view the image,capture image,save image and acquisition

I already build my file.fig at GUI: http://i41.tinypic.com/2cz3c5y.jpg ...my problem is the view from the webcam actually display outside the axes box... can anyone solve my problem??.. i also having difficulty to find source code for capture image,save and doing acquisition....

[Walter Roberson]

Which routine are you currently using to view the webcam ?

[Aziz]

sorry for not reply so long...what do u mean by routine?

actually I'm using this application for real time application... to capture the line of the mobile robot that move in straight line... so can it possible to make it capture auto. when the robot move?

[Walter Roberson]

For example are you using preview() to display the webcam image?

[Aziz]

no... im not using the preview() routine...

Answer 1

[Image Analyst]

See this function from my webcam app:

%=====================================================================
% Turn on the live video preview.  Display the bounding box over it if there is one selected.
function TurnOnLiveVideo(handles)
  global vidobj;  % Video camera object.
  % Bail out if there is no video object class instantiated.
  if isempty(vidobj), return, end;
  % Switch the current graphic axes to handles.axesImage.
  % This is where we want the video to go.
  axes(handles.axesImage);
  % Reset image magnification. Required if you ever displayed an image
  % in the axes that was not the same size as your webcam image.
  hold off;
  axis auto;  
  % Get the handle to the image in the axes.
  hImage = findobj(handles.axesImage, 'Type', 'image');
  % Turn on the live video.
  preview(vidobj, hImage);

First display something in the axes, for example a splash image or logo, so that this function has an image in the axes to get the handle of.

[Aziz]

thank you Image Analyst...really helpful... so my next step is to make this GUI can capture image automatically..it is possible to use gui?

[Image Analyst]

Yes. It is. I have a whole app to view and capture images from a Logitech webcam. Unfortunately I haven't perfected it to the level where I want to upload it to my File Exchange. Maybe I could upload a screenshot of it so you can copy it.

[NUR SHOLIHAH RAMLEE]

hello Image Analyst, may I know how do you do the view, capture, and store it in the file exchange?

Answer 2

[Fatma Buharoon]

where can i insert this code ?

Answer 3

[MathWorks MATLAB Hardware Team]

You can also try using the Acquire Webcam Image MATLAB Live Task. For more details refer to the following answer https://www.mathworks.com/matlabcentral/answers/821010-how-do-i-view-the-live-video-feed-and-capture-images-from-my-usb-webcam-in-matlab