【图像评价】图像客观评价【含GUI Matlab源码 855期】

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①Matlab图像处理（进阶版）

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⛄一、简介

理论知识参考文献：图像印刷质量的客观评价——以报纸印刷为例

⛄二、部分源代码

function varargout = Kgpj(varargin)
%KGPJ M-file for Kgpj.fig
% KGPJ, by itself, creates a new KGPJ or raises the existing
% singleton*.
%
% H = KGPJ returns the handle to a new KGPJ or the handle to
% the existing singleton*.
%
% KGPJ(‘Property’,‘Value’,…) creates a new KGPJ using the
% given property value pairs. Unrecognized properties are passed via
% varargin to Kgpj_OpeningFcn. This calling syntax produces a
% warning when there is an existing singleton*.
%
% KGPJ(‘CALLBACK’) and KGPJ(‘CALLBACK’,hObject,…) call the
% local function named CALLBACK in KGPJ.M with the given input
% arguments.
%
% *See GUI Options on GUIDE’s Tools menu. Choose “GUI allows only one
% instance to run (singleton)”.
%
%

%

%

% Begin initialization code - DO NOT EDIT
gui_Singleton = 1;
gui_State = struct(‘gui_Name’, mfilename, …
‘gui_Singleton’, gui_Singleton, …
‘gui_OpeningFcn’, @Kgpj_OpeningFcn, …
‘gui_OutputFcn’, @Kgpj_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 Kgpj is made visible.
function Kgpj_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 unrecognized PropertyName/PropertyValue pairs from the
% command line (see VARARGIN)

% Choose default command line output for Kgpj
handles.output = hObject;

% Update handles structure
guidata(hObject, handles);

% UIWAIT makes Kgpj wait for user response (see UIRESUME)
% uiwait(handles.figure1);

% — Outputs from this function are returned to the command line.
function varargout = Kgpj_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 pushbuttonLoadImage.
function pushbuttonLoadImage_Callback(hObject, eventdata, handles)
% hObject handle to pushbuttonLoadImage (see GCBO)
% eventdata reserved - to be defined in a future version of MATLAB
% handles structure with handles and user data (see GUIDATA)
filter = { …
‘.bmp;.jpg;.gif;.emf’, ‘所有图像文件 (.bmp; .jpg; .gif; emf)'; …
'.bmp’, '位图文件 (.bmp)'; …
'.jpg’, 'JPEG文件 (.jpg)’; …
‘.gif’, 'GIF文件 (.gif)’; …
‘.emf’, '图元文件 (.emf)’; …
‘.’, ‘所有文件 (.)’ …
};
% 选择文件
[filename, pathname] = uigetfile( filter, ‘打开…’);
if isequal(filename,0) | isequal(pathname,0), return, end
% 读入图像并显示
[X, map] = imread([pathname filename]);
colormap(map)
image(X)
% 设置坐标系为适合显示图像的方式
% axis imageset(gca, ‘vis’, ‘off’)

set(gcf,‘UserData’,X);

% — Executes during object creation, after setting all properties.
function pushbuttonLoadImage_CreateFcn(hObject, eventdata, handles)
% hObject handle to pushbuttonLoadImage (see GCBO)
% eventdata reserved - to be defined in a future version of MATLAB
% handles empty - handles not created until after all CreateFcns called

% — Executes on selection change in popupmenu.
function popupmenu_Callback(hObject, eventdata, handles)
% hObject handle to popupmenu (see GCBO)
% eventdata reserved - to be defined in a future version of MATLAB
% handles structure with handles and user data (see GUIDATA)

% Hints: contents = cellstr(get(hObject,‘String’)) returns popupmenu contents as cell array
% contents{get(hObject,‘Value’)} returns selected item from popupmenu

% — Executes during object creation, after setting all properties.
function popupmenu_CreateFcn(hObject, eventdata, handles)
% hObject handle to popupmenu (see GCBO)
% eventdata reserved - to be defined in a future version of MATLAB
% handles empty - handles not created until after all CreateFcns called

% Hint: popupmenu 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

function editJG_Callback(hObject, eventdata, handles)
% hObject handle to editJG (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 editJG as text
% str2double(get(hObject,‘String’)) returns contents of editJG as a double

% — Executes during object creation, after setting all properties.
function editJG_CreateFcn(hObject, eventdata, handles)
% hObject handle to editJG (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
function SF = SpaceFrequency(image)
%计算空间频率
%=============================================
%空间频率反映了一幅图像空间域的总体活跃度
%=============================================

% clear all
% [filename,pathname]=uigetfile(‘.’,‘图像’);
% A=imread([pathname,filename]);
A=image;

%s=size(size(A));
%if s(2)==3
% A=rgb2gray(A);
%end

A=double(A);
[M,N]=size(A);
sum1=0;
sum2=0;

⛄三、运行结果

⛄四、matlab版本及参考文献

1 matlab版本
2014a

2 参考文献
[1]李保强.图像印刷质量的客观评价——以报纸印刷为例[J].印刷杂志. 2021,(04)

3 备注
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