Image watermarking using DWT GUI

2018 4 15
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更新时间：2018 4 16
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How to do a "Save" and "Exit" button in Matlab Gui. I need help with the callback function

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Geoff Hayes
Geoff Hayes 2018-4-16
Ubaashan - are you creating your GUI with GUIDE, App Designer, or programmatically? When the user presses the save button, presumably you want to save something to a file or...? Please clarify.
Ubaashana Ramesh
Ubaashana Ramesh 2018-4-16
Geoff, I am using GUIDE. I am doing doing a GUI for Image watermarks. This is how it works, when the user has finished watermarking, the watermarked image has to be saved in the desktop - once the "Save" button is clicked.

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Geoff Hayes
Geoff Hayes 2018-4-16

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Ubaashana - in the (save) push button callback, you will save the data to file, possibly using imwrite. For example,

 function pushbutton1_Callback(hObject, eventdata, handles)
 % get the image data to save (from an axes or the handles structure)
 imgToSave = ...;
 % save to file
 filename = ...;
 imwrite(imgToSave, filename);

I'm assuming that you can easily get the watermarked image from the handles structure and that the filename is known (or are you asking the user for the filename?).

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