数字图象处理苏二鹏02114030.docx

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数字图象处理苏二鹏02114030.docx

数字图象处理苏二鹏02114030

图像处理大作业

1、作业要求

完成MatlabGUI程序,两个显示区域,实现功能:

1)读入灰度或彩色图像,放大缩小显示;

2)完成图像对比度的简单、分段线性变换及非线性变换,并与原图像对比;

2、作业目的

运用MATLAB,完成图像处理功能:

1)图片读入。

2)图片放大缩小。

3)灰度图片分段线性于和非线性变换。

3、作业思路

采用MatlabGUI程序完成,分为以下几个步骤:

1)菜单、界面设计

2)编写函数

3)结合allback与函数

4)调试

5)开关处理

4、作业内容

1)菜单、界面设计

运行后界面如下:

2)代码编写:

functionvarargout=untitled1(varargin)

%UNTITLED1M-fileforuntitled1.fig

%UNTITLED1,byitself,createsanewUNTITLED1orraisestheexisting

%singleton*.

%

%H=UNTITLED1returnsthehandletoanewUNTITLED1orthehandleto

%theexistingsingleton*.

%

%UNTITLED1('Property','Value',...)createsanewUNTITLED1usingthe

%givenpropertyvaluepairs.Unrecognizedpropertiesarepassedvia

%varargintountitled1_OpeningFcn.Thiscallingsyntaxproducesa

%warningwhenthereisanexistingsingleton*.

%

%UNTITLED1('CALLBACK')andUNTITLED1('CALLBACK',hObject,...)callthe

%localfunctionnamedCALLBACKinUNTITLED1.Mwiththegiveninput

%arguments.

%

%*SeeGUIOptionsonGUIDE'sToolsmenu.Choose"GUIallowsonlyone

%instancetorun(singleton)".

%

%Seealso:

GUIDE,GUIDATA,GUIHANDLES

%Edittheabovetexttomodifytheresponsetohelpuntitled1

%LastModifiedbyGUIDEv2.504-May-201417:

50:

43

%Begininitializationcode-DONOTEDIT

gui_Singleton=1;

gui_State=struct('gui_Name',mfilename,...

'gui_Singleton',gui_Singleton,...

'gui_OpeningFcn',@untitled1_OpeningFcn,...

'gui_OutputFcn',@untitled1_OutputFcn,...

'gui_LayoutFcn',[],...

'gui_Callback',[]);

ifnargin&&ischar(varargin{1})

gui_State.gui_Callback=str2func(varargin{1});

end

ifnargout

[varargout{1:

nargout}]=gui_mainfcn(gui_State,varargin{:

});

else

gui_mainfcn(gui_State,varargin{:

});

end

%Endinitializationcode-DONOTEDIT

%---Executesjustbeforeuntitled1ismadevisible.

functionuntitled1_OpeningFcn(hObject,eventdata,handles,varargin)

%Thisfunctionhasnooutputargs,seeOutputFcn.

%hObjecthandletofigure

%eventdatareserved-tobedefinedinafutureversionofMATLAB

%handlesstructurewithhandlesanduserdata(seeGUIDATA)

%vararginunrecognizedPropertyName/PropertyValuepairsfromthe

%commandline(seeVARARGIN)

%Choosedefaultcommandlineoutputforuntitled1

handles.output=hObject;

%Updatehandlesstructure

%---Outputsfromthisfunctionarereturnedtothecommandline.

functionvarargout=untitled1_OutputFcn(hObject,eventdata,handles)

%varargoutcellarrayforreturningoutputargs(seeVARARGOUT);

%hObjecthandletofigure

%eventdatareserved-tobedefinedinafutureversionofMATLAB

%handlesstructurewithhandlesanduserdata(seeGUIDATA)

%Getdefaultcommandlineoutputfromhandlesstructure

varargout{1}=handles.output;

%---Executesonbuttonpressinpushbutton3.

functionpushbutton3_Callback(hObject,eventdata,handles)

%hObjecthandletopushbutton3(seeGCBO)

%eventdatareserved-tobedefinedinafutureversionofMATLAB

%handlesstructurewithhandlesanduserdata(seeGUIDATA)

%---Executesonbuttonpressinpushbutton4.

functionpushbutton4_Callback(hObject,eventdata,handles)

%hObjecthandletopushbutton4(seeGCBO)

%eventdatareserved-tobedefinedinafutureversionofMATLAB

%handlesstructurewithhandlesanduserdata(seeGUIDATA)

functionedit1_Callback(hObject,eventdata,handles)

%hObjecthandletoedit1(seeGCBO)

%eventdatareserved-tobedefinedinafutureversionofMATLAB

%handlesstructurewithhandlesanduserdata(seeGUIDATA)

%Hints:

get(hObject,'String')returnscontentsofedit1astext

%str2double(get(hObject,'String'))returnscontentsofedit1asadouble

%---Executesduringobjectcreation,aftersettingallproperties.

functionedit1_CreateFcn(hObject,eventdata,handles)

%hObjecthandletoedit1(seeGCBO)

%eventdatareserved-tobedefinedinafutureversionofMATLAB

%handlesempty-handlesnotcreateduntilafterallCreateFcnscalled

%Hint:

editcontrolsusuallyhaveawhitebackgroundonWindows.

%SeeISPCandCOMPUTER.

ifispc&&isequal(get(hObject,'BackgroundColor'),get(0,'defaultUicontrolBackgroundColor'))

set(hObject,'BackgroundColor','white');

end

functionedit2_Callback(hObject,eventdata,handles)

%hObjecthandletoedit2(seeGCBO)

%eventdatareserved-tobedefinedinafutureversionofMATLAB

%handlesstructurewithhandlesanduserdata(seeGUIDATA)

%Hints:

get(hObject,'String')returnscontentsofedit2astext

%str2double(get(hObject,'String'))returnscontentsofedit2asadouble

%---Executesduringobjectcreation,aftersettingallproperties.

functionedit2_CreateFcn(hObject,eventdata,handles)

%hObjecthandletoedit2(seeGCBO)

%eventdatareserved-tobedefinedinafutureversionofMATLAB

%handlesempty-handlesnotcreateduntilafterallCreateFcnscalled

%Hint:

editcontrolsusuallyhaveawhitebackgroundonWindows.

%SeeISPCandCOMPUTER.

ifispc&&isequal(get(hObject,'BackgroundColor'),get(0,'defaultUicontrolBackgroundColor'))

set(hObject,'BackgroundColor','white');

end

%--------------------------------------------------------------------

functionm_gray_Callback(hObject,eventdata,handles)

%hObjecthandletom_gray(seeGCBO)

%eventdatareserved-tobedefinedinafutureversionofMATLAB

%handlesstructurewithhandlesanduserdata(seeGUIDATA)

%--------------------------------------------------------------------

functionm_file_open_Callback(hObject,eventdata,handles)

globalx

[filename,pathname]=uigetfile(...

{'*.bmp;*.jpg;*.png;*.jpeg','ImageFiles(*.bmp,*.jpg,*.png,*.jpeg)';...

'*.*','AllFiles(*.*)'},...

'Pickanimage');

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

return;

end

axes(handles.axes_1);

fpath=[pathnamefilename];

img_1=imread(fpath);

x=imread(fpath);

imshow(img_1);

set(handles.m_file_save,'Enable','on');

set(handles.reshape,'Enable','on');

set(handles.gray,'Enable','on');

set(handles.noise,'Enable','on');

set(handles.filter,'Enable','on');

%--------------------------------------------------------------------

functionm_file_save_Callback(hObject,eventdata,handles)

[filename,pathname]=uiputfile({'*.bmp','BMPfiles';'*.jpg;','JPGfiles'},'PickanImage');

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

return;

else

fpath=fullfile(pathname,filename);

end

img_1=getappdata(handles.figure_process,'img_1');

%--------------------------------------------------------------------

functionm_gray_feixianxing_Callback(hObject,eventdata,handles)

globalx

axes(handles.axes_2);

set(handles.axes_2,'HandleVisibility','ON');

y=imadjust(x,[0.2,0.5],[01],0.8);

imshow(y);

set(handles.axes_2,'HandleVisibility','OFF');

%--------------------------------------------------------------------

functionm_gray_fenduan_Callback(hObject,eventdata,handles)

globalx

axes(handles.axes_2);

set(handles.axes_2,'HandleVisibility','ON');

f0=0;g0=0;%?

?

?

?

?

?

?

?

?

?

?

?

?

?

?

?

?

?

?

?

?

?

f1=20;g1=10;

f2=180;g2=230;

f3=255;g3=255;

r1=(g1-g0)/(f1-f0);

b1=g0-r1*f0;

r2=(g2-g1)/(f2-f1);

b2=g1-r2*f1;

r3=(g3-g2)/(f3-f2);

b3=g2-r3*f2;

[m,n]=size(x);

X2=double(x);

fori=1:

m

forj=1:

n

f=X2(i,j);

g(i,j)=0;

if(f>=f1)&(f<=f2)

g(i,j)=r1*f+b2;

else

if(f>=f2)&(f<=f3)

g(i,j)=r3*f+b3;

end

end

end

end

imshow(mat2gray(g));

set(handles.axes_2,'HandleVisibility','OFF');

%--------------------------------------------------------------------

functionm_file_Callback(hObject,eventdata,handles)

%hObjecthandletom_file(seeGCBO)

%eventdatareserved-tobedefinedinafutureversionofMATLAB

%handlesstructurewithhandlesanduserdata(seeGUIDATA)

%--------------------------------------------------------------------

functionm_file_exit_Callback(hObject,eventdata,handles)

%hObjecthandletom_file_exit(seeGCBO)

%eventdatareserved-tobedefinedinafutureversionofMATLAB

%handlesstructurewithhandlesanduserdata(seeGUIDATA)

bChanged=getappdata(handles.figure_process,'bChanged');

bSave=getappdata(handles.figure_process,'bSave');

ifbChanged==true&&bSave==false,

btnName=questdlg('?

¨²?

?

?

?

?

¨¹?

?

?

?

?

?

?

?

?

?

?

?

?

?

?

?

¡À?

?

?

?

?

?

?

¡À?

?

?

?

?

?

','?

¨¢?

?

','¡À?

?

?

','?

?

¡À?

?

?

','¡À?

?

?

');

switchbtnName,

case'¡À?

?

?

',

feval(@axes_2_menu_save_Callback,handles.axes_2_menu_save,eventdata,handles);

case'?

?

¡À?

?

?

'

end

end

%---Executesduringobjectcreation,aftersettingallproperties.

functionaxes_1_CreateFcn(hObject,eventdata,handles)

%hObjecthandletoaxes_1(seeGCBO)

%eventdatareserved-tobedefinedinafutureversionofMATLAB

%handlesempty-handlesnotcreateduntilafterallCreateFcnscalled

%Hint:

placecodeinOpeningFcntopopulateaxes_1

%--------------------------------------------------------------------

functionm_zoom_zoomout_Callback(hObject,eventdata,handles)

%hObjecthandletom_zoom_zoomout(seeGCBO)

%eventdatareserved-tobedefinedinafutureversionofMATLAB

%handlesstructurewithhandlesanduserdata(seeGUIDATA)

globalx;

axes(handles.axes_2);

set(handles.axes_2,'HandleVisibility','ON');

prompt={'Insertthemultiple:

'};

defans={'5'};

p=inputdlg(prompt,'Insert',1,defans);

p1=str2num(p{1});

y=imresize(x,p1,'nearest');

figure,imshow(y);

set(handles.axes_2,'HandleVisibility','OFF');

%--------------------------------------------------------------------

functionm_zoom_zoomin_Callback(hObject,eventdata,handles)

%hObjecthandletom_zoom_zoomin(seeGCBO)

%eventdatareserved-tobedefinedinafutureversionofMATLAB

%handlesstructurewithhandlesanduserdata(seeGUIDATA)

globalx;

axes(handles.axes_2);

set(handles.axes_2,'HandleVisibility','ON');

prompt={'Insertthemultiple:

'};

defans={'0.5'};

p=inputdlg(prompt,'Insert',1,defans);

p1=str2num(p{1});

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