% WAVLET M-file for wavlet.fig
% WAVLET, by itself, creates a new WAVLET or raises the existing
% singleton*.
%
% H = WAVLET returns the handle to a new WAVLET or the handle to
% the existing singleton*.
%
% WAVLET('CALLBACK',hObject,eventData,handles,...) calls the local
% function named CALLBACK in WAVLET.M with the given input arguments.
%
% WAVLET('Property','Value',...) creates a new WAVLET or raises the
% existing singleton*. Starting from the left, property value pairs are
% applied to the GUI before wavlet_OpeningFunction gets called. An
% unrecognized property name or invalid value makes property application
% stop. All inputs are passed to wavlet_OpeningFcn via varargin.
%
% *See GUI Options on GUIDE's Tools menu. Choose "GUI allows only one
% instance to run (singleton)".
%
% See also: GUIDE, GUIDATA, GUIHANDLES
% Edit the above text to modify the response to help wavlet
% Last Modified by GUIDE v2.5 21-Jun-2004 11:13:32
% Begin initialization code - DO NOT EDIT
gui_Singleton = 1;
gui_State = struct('gui_Name', mfilename, ...
'gui_Singleton', gui_Singleton, ...
'gui_OpeningFcn', @wavlet_OpeningFcn, ...
'gui_OutputFcn', @wavlet_OutputFcn, ...
'gui_LayoutFcn', [] , ...
'gui_Callback', []);
if nargin & isstr(varargin{1})
gui_State.gui_Callback = str2func(varargin{1});
end
if nargout
[varargout{1:nargout}] = gui_mainfcn(gui_State, varargin{:});
else
gui_mainfcn(gui_State, varargin{:});
end
% End initialization code - DO NOT EDIT
% --- Executes just before wavlet is made visible.
function wavlet_OpeningFcn(hObject, eventdata, handles, varargin)
% This function has no output args, see OutputFcn.
% hObject handle to figure
% eventdata reserved - to be defined in a future version of MATLAB
% handles structure with handles and user data (see GUIDATA)
% varargin command line arguments to wavlet (see VARARGIN)
% Choose default command line output for wavlet
handles.output = hObject;
% Update handles structure
guidata(hObject, handles);
% UIWAIT makes wavlet wait for user response (see UIRESUME)
% uiwait(handles.figure1);
% --- Outputs from this function are returned to the command line.
function varargout = wavlet_OutputFcn(hObject, eventdata, handles)
% varargout cell array for returning output args (see VARARGOUT);
% hObject handle to figure
% eventdata reserved - to be defined in a future version of MATLAB
% handles structure with handles and user data (see GUIDATA)
% Get default command line output from handles structure
varargout{1} = handles.output;
% --- Executes during object creation, after setting all properties.
function edit1_CreateFcn(hObject, eventdata, handles)
% hObject handle to edit1 (see GCBO)
% eventdata reserved - to be defined in a future version of MATLAB
% handles empty - handles not created until after all CreateFcns called
% Hint: edit controls usually have a white background on Windows.
% See ISPC and COMPUTER.
if ispc
set(hObject,'BackgroundColor','white');
else
set(hObject,'BackgroundColor',get(0,'defaultUicontrolBackgroundColor'));
end
function edit1_Callback(hObject, eventdata, handles)
% hObject handle to edit1 (see GCBO)
% eventdata reserved - to be defined in a future version of MATLAB
% handles structure with handles and user data (see GUIDATA)
global pp;
pp=str2double(get(hObject,'String'));
% Hints: get(hObject,'String') returns contents of edit1 as text
% str2double(get(hObject,'String')) returns contents of edit1 as a double
% --- 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 pp;
global psnr_noise_remove;
load psnr_noise_remove;
global psnr;
load psnr;
%读入原始图像并显示
i=imread('lena.bmp');
subplot(2,2,1);
imshow(i);
title('原始图像');
axis square;
%生成含噪图像并显示
j=imnoise(i,'gaussian',0,pp);
subplot(2,2,2);
imshow(j);
title('含噪图像');
axis square;
%用sym4小波函数对j进行2层分解
[c,l]=wavedec2(j,2,'sym4');
%实现低通滤波消噪
a1=uint8(wrcoef2('a',c,l,'sym4',2));
%用coif2小波函数对j进行2层分解
[gc,gl]=wavedec2(a1,2,'coif2');
n=[1,2];%设置尺度向量
p=[10.28,24.08];%设置阈值向量
%对三个高频系数进行阈值处理
nc=wthcoef2('h',gc,gl,n,p,'s');
nc=wthcoef2('v',gc,gl,n,p,'s');
nc=wthcoef2('d',gc,gl,n,p,'s');
mc=wthcoef2('h',gc,gl,n,p,'s');
mc=wthcoef2('v',gc,gl,n,p,'s');
mc=wthcoef2('d',gc,gl,n,p,'s');
%对更新后的小波分解结构进行阈值处理
x2=waverec2(mc,gl,'coif2');
%进行中值滤波
for ii=1:252;
for jj=1:252;
temp=0;
for m=0:3
for n=0:3
temp=temp+double(x2(ii+m,jj+n));
end
end
temp=temp/16;
x4(ii,jj)=temp;
end
end
for ii=253:256
for jj=253:256
x4(ii,jj)=double(i(ii,jj));
end
end
%显示去噪图像
subplot(2,2,3);
imshow(uint8(x4));
title('消噪图像');
axis square;
%计算psnr
q=0.0;
for x=1:256;
for j=1:256;
diff=x4(x,j)-double(i(x,j));
q=q+diff*diff;
end
end
psnr_y = q / (256*256);
psnr_y = (255 * 255)/psnr_y;
set(psnr_noise_remove,'String',psnr_y);
for ii=1:10
if psnr(ii)==0
psnr(ii)=psnr_y;
break;
end
end
save psnr psnr;
% --- Executes during object creation, after setting all properties.
function edit2_CreateFcn(hObject, eventdata, handles)
% hObject handle to edit2 (see GCBO)
% eventdata reserved - to be defined in a future version of MATLAB
% handles empty - handles not created until after all CreateFcns called
global psnr_noise_remove;
% Hint: edit controls usually have a white background on Windows.
% See ISPC and COMPUTER.
if ispc
set(hObject,'BackgroundColor','white');
else
set(hObject,'BackgroundColor',get(0,'defaultUicontrolBackgroundColor'));
end
psnr_noise_remove=hObject;
save psnr_noise_remove psnr_noise_remove;
function edit2_Callback(hObject, eventdata, handles)
% hObject handle to edit2 (see GCBO)
% eventdata reserved - to be defined in a future version of MATLAB
% handles structure with handles and user data (see GUIDATA)
% Hints: get(hObject,'String') returns contents of edit2 as text
% str2double(get(hObject,'String')) returns contents of edit2 as a double
运行后出现红色提示
??? function varargout = wavlet(varargin)
|
Error: Function definitions are not permitted at the prompt or in scripts.
是什么意思，要怎么修改，
1 个解决方案
#1
函数要事先建在.m文件中，然后再在脚本或窗口中调用
#1
函数要事先建在.m文件中，然后再在脚本或窗口中调用