1、2013-1014 第一学期 MATLAB 课程期末考核作业20120511048 王晨晨基于 MATLAB GUI 的图片的数字化处理界面设计1、设计目标：利用 GUI 设计工具设计一个界面，该界面包括两个用于显示图片的坐标轴对象。用户通过单击相应的按钮，可以对图片进行灰度处理、均值化处理、直方图显示、亮度调节、颜色调节、旋转角度、背景颜色调节的功能。2、打开 GUI 设计设计窗口，添加相关控件对象，并设置相应的属性。3、编写代码，实现控件的功能。1、 加载图片按钮的代码：function pushbutton5_Callback(hObject, eventdata, handles)%
2、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)filename,pathname =uigetfile(*.jpg;*.bmp;*.tif,加载图片);file=pathname,filename;global S; %设置一个全局变量S，S=file;x=imread(file); %选中图片axes(hand
3、les.axes1);imshow(x); %用axes1 显示原图axes(handles.axes2);imshow(x); %用axes2 显示处理后对比图handles.img=x; %用handles（句柄）存储当前图像guidata(hObject,handles); %保存handles 的内容% - Executes on button press in pushbutton6.2、灰度处理按钮的代码;function pushbutton6_Callback(hObject, eventdata, handles)% hObject handle to pushbutton6
4、 (see GCBO)% eventdata reserved - to be defined in a future version of MATLAB% handles structure with handles and user data (see GUIDATA)global T %设 置全局变量axes(handles.axes2);T=getimage; %获取当前图像（上一次操作后的图片）x=rgb2gray(handles.img); %二值化imshow(x); %显示二值化后图片handles.img=x; %用handles（句柄）存储当前图像guidata(hObje
5、ct,handles); %保存handles（句柄）的内容3、 反化按钮的代码：function pushbutton7_Callback(hObject, eventdata, handles)% hObject handle to pushbutton7 (see GCBO)% eventdata reserved - to be defined in a future version of MATLAB% handles structure with handles and user data (see GUIDATA)global T %设 置全局变量axes(handles.axe
6、s2); %启用axes2T=getimage; %获取上次操作图片f=imcomplement(handles.img); %对图像数据进行取反运算（实现底片效果） 。imshow(f); %显示之handles.img=f; %储存在句柄中guidata(hObject,handles); %保存句柄内容4、 亮度调节的代码：function pushbutton8_Callback(hObject, eventdata, handles)% hObject handle to pushbutton8 (see GCBO)% eventdata reserved - to be defin
7、ed in a future version of MATLAB% handles structure with handles and user data (see GUIDATA)global T %全局 变量axes(handles.axes2); %启用axes2T=getimage; %获取上一步图像prompt=调节倍数; %调节倍数对话框defans=1; %默认值设为1p=inputdlg(prompt,input,1,defans); %输入框由用户输入数值p1=str2double(p1); %把字符串转换数值y=imadjust(handles.img, , ,p1);
8、%调节灰度图像的亮度或彩色图像imshow(y); %显示之handles.img=y;guidata(hObject,handles);5、 直方图的代码：function pushbutton9_Callback(hObject, eventdata, % handles structure with handles and user data (see GUIDATA)axes(handles.axes2);x=imhist(handles.img); %显示灰度直方图x1=x(1:10:256);horz=1:10:256; %X轴范围设置bar(horz,x1); %调用bar函数显
9、示直方图axis(0 255 0 15000); %设置Y轴示值范围set(handles.axes2,xtick,0:10:255); %X轴范围及分度set(handles.axes2,ytick,0:2000:15000); %Y值范围及分度6、 均值按钮的代码：function pushbutton10_Callback(hObject, eventdata, handles)% hObject handle to pushbutton10 (see GCBO)% eventdata reserved - to be defined in a future version of MAT
10、LAB% handles structure with handles and user data (see GUIDATA)T=getimage; %获取上一步图像h=histeq(handles.img,64); %均衡化后的直方图只有64 个灰度值imshow(h); %显示之handles.img=h; %储存在句柄中guidata(hObject,handles); %保存句柄内容7、 撤销上步按钮的代码： function pushbutton2_Callback(hObject, eventdata, handles)% hObject handle to pushbutton2
11、 (see GCBO)% eventdata reserved - to be defined in a future version of MATLAB% handles structure with handles and user data (see GUIDATA)global T %全局 变量axes(handles.axes2); %启用axes2imshow(T); %显示上一步图像（即撤销当前步骤的操handles.img=T;guidata(hObject,handles);8、 恢复原图按钮的代码：function pushbutton3_Callback(hObject,
12、 eventdata, handles)% hObject handle to pushbutton3 (see GCBO)% eventdata reserved - to be defined in a future version of MATLAB% handles structure with handles and user data (see GUIDATA)global S %原 图的全局变量axes(handles.axes2);y=imread(S); %选择原图imshow(y); %显示原图handles.img=y;guidata(hObject,handles);9
13、、旋转图片按钮代码：function togglebutton2_Callback(hObject, eventdata, handles)% hObject handle to togglebutton2 (see GCBO)% eventdata reserved - to be defined in a future version of MATLAB% handles structure with handles and user data (see GUIDATA)global S %原 图的全局变量axes(handles.axes2);a=imread(S); %选择原图a1=i
14、mrotate(a,-45,bilinear);%旋转函数，45为旋转角度，bilinear为旋转后不是整数点的像素值 通过双线性插值得到。当旋转角度为正时，逆时针旋转；当旋转角度为负时，顺时针旋转imshow(a1);10:改变背景颜色代码：function radiobutton6_Callback(hObject, eventdata, handles)% hObject handle to radiobutton6 (see GCBO)% eventdata reserved - to be defined in a future version of MATLAB% handles
15、structure with handles and user data (see GUIDATA)set(gcf, color, blue);11、适当调整图片颜色的代码：function pushbutton14_Callback(hObject, eventdata, handles)% hObject handle to pushbutton14 (see GCBO)% eventdata reserved - to be defined in a future version of MATLAB% handles structure with handles and user dat
16、a (see GUIDATA)global S %原 图的全局变量axes(handles.axes2);a=imread(S); %选择原图b = imadjust(a,.0 .2 0; .5 .6 .5,);Height,Width,temp_3 = size(a);image(b)12、退出按钮的代码 :% handles structure with handles and user data (see GUIDATA)clc; %退出close all;close(gcf);Clear；四、图片显示如下：1、原图显示：2、灰度处理：3、直方图显示：4、均值化处理：5、均值化后的直方6、恢复原图：7、亮度调节：8:反化处理：9、旋转角度处理：10 图片颜色调节：
