Question

matlab gui界面设计，设计一个按钮，要求按下就可以读入图片（从几幅图中选择），怎么做，回调函数怎样

Answer 1

% --- Executes on button press in pushbutton1.
function pushbutton1_Callback(hObject, eventdata, handles)
% hObject handle to pushbutton1 (see GCBO)
% eventdata reserved - to be defined in a future version of MATLAB
% handles structure with handles and user data (see GUIDATA)
global im

[filename pathname] = ...
uigetfile({'*.jpg';'*.bmp';'*.gif'}, '开始');

str=[pathname filename];

im=imread(str);
axes(handles.axes1);
imshow(im);

Answer 2

uigetfile

追问

popupmenu的回调函数该怎么写，要求是可以弹出两个选项，单击一个选项就可以给黑白图片加上一种噪声。谢谢先