鸡你太美警告！入门GUI。

读取图片按钮函数;

设置全局变量BW，后来调用非常方便。

function pushbutton1_Callback(hObject, eventdata, handles)

% hObject    handle to pushbutton1 (see GCBO)

% eventdata  reserved - to be definedina future version of MATLAB

% handles    structure with handles and user data (see GUIDATA)

global BW

global filename

global pathname

[filename,pathname]=uigetfile({'*.jpg';'*.bmp';'*.tif';'*.*'},'载入图像');

ifisequal(filename,0)|isequal(pathname,0)

errordlg('没有选中文件','出错');

return;

else

file=[pathname,filename];

end

BW = imread(file);

axes(handles.axes1);

imshow(BW);

title(date,'color','r');

保存图片按钮函数：

function pushbutton5_Callback(hObject, eventdata, handles)

% hObject    handle to pushbutton5 (see GCBO)

% eventdata  reserved - to be defined in a future version of MATLAB

% handles    structure with handles and user data (see GUIDATA)

%global BW

[filename,pathname]=...

    uiputfile({'*.tif';'*.jpg';'*.png';'*.bmp'},'save pictrue');

if isequal(filename,0)||isequal(pathname,0)

    return

else

    str=[pathname filename]

    axes(handles.axes2);

    im=getimage(handles.axes2);

    imwrite(im,str);

end

退出按钮函数:

function pushbutton6_Callback(hObject, eventdata, handles)

% hObject    handle to pushbutton6 (see GCBO)

% eventdata  reserved - to be defined in a future version of MATLAB

% handles    structure with handles and user data (see GUIDATA)

close(gcf)  %关闭当前Figure窗口句柄

canny算子示例：

function radiobutton20_Callback(hObject, eventdata, handles)

% hObject    handle to radiobutton20 (see GCBO)

% eventdata  reserved - to be defined in a future version of MATLAB

% handles    structure with handles and user data (see GUIDATA)

% Hint: get(hObject,'Value') returns toggle state of radiobutton20

global BW;

global pathname;

global filename;

% axis off  %%关闭坐标轴显示

str=[pathname filename];

%%打开图像

im=BW;

%%打开axes1的句柄 进行axes1的操作

axes(handles.axes1);

%%在axes1中显示 图像

imshow(im);

%图像处理部分

I=im2bw(im);

BW1=edge(I,'canny'); %用canny算子进行边缘检测

axes(handles.axes2);

imshow(BW1);

彩蛋