请修改以下matlab代码让其可以实现指数低通滤波gui界面function exponential_low_Callback(hObject, eventdata, handles)%指数低通滤波器 % hObject handle to exponential_low (see GCBO) % eventdata reserved - to be defined in a future version of MATLAB % handles structure with handles and user data (see GUIDATA) axis off; %%关闭坐标轴显示 global im; %%声明全局变量 global str; im = imread(str); % 读入图像并加入高斯噪声 J = imnoise(im, 'gaussian', 0, 0.01); % 定义滤波器参数 D0 = 40; alpha=0.2; % 截止频率alpha = 0.1; % 阻尼系数% 计算频率域滤波器 [M, N] = size(J); u = 0:(M-1); v = 0:(N-1); idx = find(u>M/2); u(idx) = u(idx)-M; idy = find(v>N/2); v(idy) = v(idy)-N; [V, U] = meshgrid(v, u); D = sqrt(U.^2 + V.^2); H = 1./(1 + (D/D0).^(2*alpha)); % 应用频率域滤波器 K = fft2(J); L = K .* H; Lp = real(ifft2(L));% 显示结果 % 显示滤波后的图像 axes(handles.axes2); imshow(uint8(Lp));
时间: 2024-03-14 11:43:31 浏览: 14
这里提供一个简单的GUI界面实现指数低通滤波的Matlab代码,你可以参考一下:
function varargout = exponential_low_GUI(varargin)
% EXPOENTIAL_LOW_GUI MATLAB code for exponential_low_GUI.fig
% EXPOENTIAL_LOW_GUI, by itself, creates a new EXPOENTIAL_LOW_GUI or raises the existing
% singleton*.
%
% H = EXPOENTIAL_LOW_GUI returns the handle to a new EXPOENTIAL_LOW_GUI or the handle to
% the existing singleton*.
%
% EXPOENTIAL_LOW_GUI('CALLBACK',hObject,eventData,handles,...) calls the local
% function named CALLBACK in EXPOENTIAL_LOW_GUI.M with the given input arguments.
%
% EXPOENTIAL_LOW_GUI('Property','Value',...) creates a new EXPOENTIAL_LOW_GUI or raises the
% existing singleton*. Starting from the left, property value pairs are
% applied to the GUI before exponential_low_GUI_OpeningFcn gets called. An
% unrecognized property name or invalid value makes property application
% stop. All inputs are passed to exponential_low_GUI_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 exponential_low_GUI
% Last Modified by GUIDE v2.5 28-Jul-2021 10:34:09
% Begin initialization code - DO NOT EDIT
gui_Singleton = 1;
gui_State = struct('gui_Name', mfilename, ...
'gui_Singleton', gui_Singleton, ...
'gui_OpeningFcn', @exponential_low_GUI_OpeningFcn, ...
'gui_OutputFcn', @exponential_low_GUI_OutputFcn, ...
'gui_LayoutFcn', [] , ...
'gui_Callback', []);
if nargin && ischar(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 exponential_low_GUI is made visible.
function exponential_low_GUI_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 exponential_low_GUI (see VARARGIN)
% Choose default command line output for exponential_low_GUI
handles.output = hObject;
% Update handles structure
guidata(hObject, handles);
% UIWAIT makes exponential_low_GUI wait for user response (see UIRESUME)
% uiwait(handles.figure1);
% --- Outputs from this function are returned to the command line.
function varargout = exponential_low_GUI_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 on button press in load_image_btn.
function load_image_btn_Callback(hObject, eventdata, handles)
% hObject handle to load_image_btn (see GCBO)
% eventdata reserved - to be defined in a future version of MATLAB
% handles structure with handles and user data (see GUIDATA)
global im;
global str;
str = uigetfile({'*.jpg;*.jpeg;*.png;*.bmp'}, 'Select an image file');
axes(handles.axes1);
imshow(str);
im = imread(str);
% --- Executes on button press in filter_btn.
function filter_btn_Callback(hObject, eventdata, handles)
% hObject handle to filter_btn (see GCBO)
% eventdata reserved - to be defined in a future version of MATLAB
% handles structure with handles and user data (see GUIDATA)
global im;
global str;
J = imnoise(im, 'gaussian', 0, 0.01); % 加入高斯噪声
D0 = str2double(get(handles.cutoff_freq_edit, 'String')); % 截止频率
alpha = str2double(get(handles.damping_factor_edit, 'String')); % 阻尼系数
[M, N] = size(J);
u = 0:(M-1);
v = 0:(N-1);
idx = find(u>M/2);
u(idx) = u(idx)-M;
idy = find(v>N/2);
v(idy) = v(idy)-N;
[V, U] = meshgrid(v, u);
D = sqrt(U.^2 + V.^2);
H = 1./(1 + (D/D0).^(2*alpha)); % 频率域滤波器
K = fft2(J);
L = K .* H;
Lp = real(ifft2(L));
axes(handles.axes2);
imshow(uint8(Lp));
% --- Executes during object creation, after setting all properties.
function cutoff_freq_edit_CreateFcn(hObject, eventdata, handles)
% hObject handle to cutoff_freq_edit (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 && isequal(get(hObject,'BackgroundColor'), get(0,'defaultUicontrolBackgroundColor'))
set(hObject,'BackgroundColor','white');
end
% --- Executes during object creation, after setting all properties.
function damping_factor_edit_CreateFcn(hObject, eventdata, handles)
% hObject handle to damping_factor_edit (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 && isequal(get(hObject,'BackgroundColor'), get(0,'defaultUicontrolBackgroundColor'))
set(hObject,'BackgroundColor','white');
end
% --- Executes on button press in reset_btn.
function reset_btn_Callback(hObject, eventdata, handles)
% hObject handle to reset_btn (see GCBO)
% eventdata reserved - to be defined in a future version of MATLAB
% handles structure with handles and user data (see GUIDATA)
axes(handles.axes1);
imshow([]);
axes(handles.axes2);
imshow([]);
set(handles.cutoff_freq_edit, 'String', '');
set(handles.damping_factor_edit, 'String', '');
% --- Executes on button press in close_btn.
function close_btn_Callback(hObject, eventdata, handles)
% hObject handle to close_btn (see GCBO)
% eventdata reserved - to be defined in a future version of MATLAB
% handles structure with handles and user data (see GUIDATA)
close(gcf);
% --- Executes during object creation, after setting all properties.
function axes1_CreateFcn(hObject, eventdata, handles)
% hObject handle to axes1 (see GCBO)
% eventdata reserved - to be defined in a future version of MATLAB
% handles empty - handles not created until after all CreateFcns called
% Hint: place code in OpeningFcn to populate axes1
% --- Executes during object creation, after setting all properties.
function axes2_CreateFcn(hObject, eventdata, handles)
% hObject handle to axes2 (see GCBO)
% eventdata reserved - to be defined in a future version of MATLAB
% handles empty - handles not created until after all CreateFcns called
% Hint: place code in OpeningFcn to populate axes2
% --- Executes during object creation, after setting all properties.
function uipanel1_CreateFcn(hObject, eventdata, handles)
% hObject handle to uipanel1 (see GCBO)
% eventdata reserved - to be defined in a future version of MATLAB
% handles empty - handles not created until after all CreateFcns called
% Hint: place code in OpeningFcn to populate uipanel1
% --- Executes during object creation, after setting all properties.
function uipanel2_CreateFcn(hObject, eventdata, handles)
% hObject handle to uipanel2 (see GCBO)
% eventdata reserved - to be defined in a future version of MATLAB
% handles empty - handles not created until after all CreateFcns called
% Hint: place code in OpeningFcn to populate uipanel2
% --- Executes during object creation, after setting all properties.
function filter_btn_CreateFcn(hObject, eventdata, handles)
% hObject handle to filter_btn (see GCBO)
% eventdata reserved - to be defined in a future version of MATLAB
% handles empty - handles not created until after all CreateFcns called
% Hint: place code in OpeningFcn to populate filter_btn
% --- Executes during object creation, after setting all properties.
function reset_btn_CreateFcn(hObject, eventdata, handles)
% hObject handle to reset_btn (see GCBO)
% eventdata reserved - to be defined in a future version of MATLAB
% handles empty - handles not created until after all CreateFcns called
% Hint: place code in OpeningFcn to populate reset_btn
% --- Executes during object creation, after setting all properties.
function close_btn_CreateFcn(hObject, eventdata, handles)
% hObject handle to close_btn (see GCBO)
% eventdata reserved - to be defined in a future version of MATLAB
% handles empty - handles not created until after all CreateFcns called
% Hint: place code in OpeningFcn to populate close_btn
% --- Executes on key press with focus on cutoff_freq_edit and none of its controls.
function cutoff_freq_edit_KeyPressFcn(hObject, eventdata, handles)
% hObject handle to cutoff_freq_edit (see GCBO)
% eventdata structure with the following fields (see MATLAB.UI.CONTROL.UICONTROL)
% Key: name of the key that was pressed, in lower case
% Character: character interpretation of the key(s) that was pressed
% Modifier: name(s) of the modifier key(s) (i.e., control, shift) pressed
% handles structure with handles and user data (see GUIDATA)
key = get(gcf,'CurrentKey');
if strcmp(key, 'return')
filter_btn_Callback(hObject, eventdata, handles);
end
% --- Executes on key press with focus on damping_factor_edit and none of its controls.
function damping_factor_edit_KeyPressFcn(hObject, eventdata, handles)
% hObject handle to damping_factor_edit (see GCBO)
% eventdata structure with the following fields (see MATLAB.UI.CONTROL.UICONTROL)
% Key: name of the key that was pressed, in lower case
% Character: character interpretation of the key(s) that was pressed
% Modifier: name(s) of the modifier key(s) (i.e., control, shift) pressed
% handles structure with handles and user data (see GUIDATA)
key = get(gcf,'CurrentKey');
if strcmp(key, 'return')
filter_btn_Callback(hObject, eventdata, handles);
end
```
你可以在Matlab中创建一个新的GUI,将上述代码复制到.m文件中,并将GUI设计器中的组件与相应的回调函数连接。这个GUI界面包含了一个按钮用于加载图像,两个编辑框用于输入截止频率和阻尼系数,一个按钮用于启动滤波,一个按钮用于重置所有内容,一个按钮用于关闭GUI界面,以及两个用于显示图像的Axes组件。