Open an image in a GUI

1 Ansicht (letzte 30 Tage)
Claire Redfield
Claire Redfield am 27 Feb. 2013
Hello guys, I have
[f,p] = uigetfile({'*.png;*.jpg;*.bmp;*.tif','Supported images';...
'*.png','Portable Network Graphics (*.png)';...
'*.jpg','J-PEG (*.jpg)';...
'*.bmp','Bitmap (*.bmp)';...
'*.tif','Tagged Image File (*.tif,)';...
'*.*','All files (*.*)'});
x = imread([p f]);
himage=imshow(x);
title(f)
Which can open an image file and imshow it. My question is: How may i associate it with a button in a GUI ike
uicontrol('String', 'Original',...
'Callback', 'imshow(x);title Original;',...
'Units','normalized',...
'Position',[0 0 .15 .07]);

Antworten (2)

Jan
Jan am 27 Feb. 2013
Bearbeitet: Jan am 27 Feb. 2013
You can store the code to select and display the image in the button's callback function:
uicontrol('String', 'Original', ...
'Callback', @myCallback);
function myCallback(ObjectH, EventData)
FigureH = ancestor(ObjectH, 'figure');
[f,p] = uigetfile(...);
x = imread(fullfile(p, f));
himage = imshow(x, 'Parent', FigureH);
title(f)
  1 Kommentar
Claire Redfield
Claire Redfield am 27 Feb. 2013
Thank you, i have saved the function but for uicontrol('String', 'Original', ... 'Callback', 'myCallback',... 'Units','normalized',... 'Position',[.80 0 .15 .07]); it just doesnt work...

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Sean de Wolski
Sean de Wolski am 27 Feb. 2013
figure;
ax = axes;
figure; peaks %another figure
uicontrol('Style','pushbutton',...
'Units','normalized',...
'Position',[0.1 0.1 0.1 0.1],...
'String','Push Me!',...
'Callback',@(~,~)imshow(imread('cameraman.tif'),'parent',ax)); %first axes!!!
Specify the 'Parent' of the image in imshow(). This is explained in a Note in the doc for imshow
Note: If you are building a GUI where you want to control the figure and axes properties, be sure to use the imshow(..., 'Parent', ax) syntax.
  2 Kommentare
Claire Redfield
Claire Redfield am 27 Feb. 2013
imshow(imread('cameraman.tif') its just read a specific image while i want to open any image i choose, is there any way to do that?
Sean de Wolski
Sean de Wolski am 27 Feb. 2013
All you have to do is change the string to whatever you selected with uigetfile. I was demonstrating how you put an image on a specific axes, which is what I thought you were having trouble with.
It look slike you have the imread part down so just pull that out of the callback for the pushbutton.

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