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

Question

Aziz 2012-4-18

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https://ww2.mathworks.cn/matlabcentral/answers/35810-using-webcam-in-gui-to-view-the-image-capture-image-save-image-and-acquisition

编辑： MathWorks MATLAB Hardware Team 2021-5-4

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....

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Walter Roberson 2012-10-2

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

Aziz 2012-10-3

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

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Answer 1

Image Analyst 2012-10-3

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https://ww2.mathworks.cn/matlabcentral/answers/35810-using-webcam-in-gui-to-view-the-image-capture-image-save-image-and-acquisition#answer_60724

在 MATLAB Online 中打开

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.

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Image Analyst 2012-10-3

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 2018-3-27