1.
properties
folder
filename
end
% Call back for pushbutton to load image
[app.filename, app.folder] = uigetfile('*.*');
if ~ischar(app.filename); return; end %user cancel
[~,~,ext] = fileparts(app.filename);
files = dir(fullfile(app.folder,['*' ext]));
% Update dropdown box with file names in the same folder with the same extension as file loaded.
app.ImageFileDropDown.Items = {files.name};
app.ImageFileDropDown.Value = app.filename;
% Read image
Img = imread(fullfile(app.folder,app.filename)); % or imread(fullfile(app.folder,app.ImageFileDropDown.Value))
imshow(app.UIAxes) % to load on axes
app.Image.ImageSource = fullfile(app.folder,app.filename) % to load on Image
2. If you plan on ploting or playing graphical objects ontop of image, I would use app.UIAxes.
