前言

那本蔡利梅的《matlab图像处理 理论、算法与实例分析》讲GUI部分偏重于实例。但对于我这种0基础的人来说，需要知道更弱智的东西，比如怎么运行.fig文件，怎么把.fig文件和.m文件关联起来，生成的.m文件自带的那么多代码是啥意思等等等
推荐这一本书—作者讲的非常详细！

1. GUIDE布局

刚接触这个GUIDE布局，我写了代码不知道怎么使用如下这个界面，保存了这个界面好像也没有任何变化。在b站看了好一会视频才知道。。。点那个绿的三角形键，就能显示出熟悉的图窗！

2. 自定义菜单设计

3. 属性设置

给菜单的每个选项设置了tag标记，保存GUIDE布局后会在M文件自动生成格式为‘tag值_Callback’样式的函数

4. 实现代码

function varargout = spImage(varargin)

% Begin initialization code - DO NOT EDIT
gui_Singleton = 1;
gui_State = struct('gui_Name',       mfilename, ...
                   'gui_Singleton',  gui_Singleton, ...
                   'gui_OpeningFcn', @spImage_OpeningFcn, ...
                   'gui_OutputFcn',  @spImage_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 spImage is made visible.
function spImage_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 spImage (see VARARGIN)

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

% Update handles structure
guidata(hObject, handles);

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


% --- Outputs from this function are returned to the command line.
function varargout = spImage_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;


% --------------------------------------------------------------------
function File_Callback(hObject, eventdata, handles)
% hObject    handle to File (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)

% 打开图像
function openImage_Callback(hObject, eventdata, handles)
global imageOriginal;
fmt =  {'*.jpg', 'JPEG image(*.jpg)'; '*.png', 'PNG image(.*png)'; ...
    '*.bmp', 'BMP image(.*bmp)'; '*.gif', 'GIF image(.*gif)';};  %自定义可打开得的图像的文件类型
[filename, filepath] = uigetfile(fmt, '打开图像', '*.jpg');         %这是使用uigetfile的固定格式，打开的图片显示默认文件名*.jpg

if ~isequal([filename, filepath], [0,0])
    filefullname = strcat(filepath, filename);
else
    return;
end
imageOriginal = imread(filefullname);
axes(handles.axes1);
imshow(imageOriginal );
axis off;

% 保存图像
function saveImage_Callback(hObject, eventdata, handles)
global imageOriginal;
fmt =  {'*.jpg', 'JPEG image(*.jpg)'; '*.png', 'PNG image(.*png)'; ...
    '*.bmp', 'BMP image(.*bmp)'; '*.gif', 'GIF image(.*gif)';};  %自定义可保存得的图像的文件类型
[filename, filepath] = uiputfile(fmt, '保存图像'); %设置文件保存对话框，标题为‘保存图像’，并返回保存的文件名和文件路径
fullfilename = strcat(filepath, filename);
imwrite(imageOriginal, fullfilename);

% 退出图窗
function quit_Callback(hObject, eventdata, handles)
close(gcf);

5. 效果

• 初始界面
  

• 打开图像功能

  红线部分均为自己设计的

• 保存图像功能