1 简介 图像边缘是图像的最基本的特征.所谓边缘,就是指图像局部强度变化最明显的部分,存在于区域与区域,目标与目标,目标与背景,基元与基元之间,包含有图像处理中用于识别的关键信
1 简介
图像边缘是图像的最基本的特征.所谓边缘,就是指图像局部强度变化最明显的部分,存在于区域与区域,目标与目标,目标与背景,基元与基元之间,包含有图像处理中用于识别的关键信息.边缘检测是数字图像处理中,最基础也是最重要的环节之一. 本文介绍了3种经典的边缘检测算子,包括Sobel算子,Canny算子,Prewitt算子检测方法.并且利用MATLAB系统所提供的相关函数等,对同一副图像结合用这些不同的算子分别进行处理,分析并得到他们处理图像的特点.
2 部分代码
function varargout = guipic(varargin)% GUIPIC MATLAB code for guipic.fig
% GUIPIC, by itself, creates a new GUIPIC or raises the existing
% singleton*.
%
% H = GUIPIC returns the handle to a new GUIPIC or the handle to
% the existing singleton*.
%
% GUIPIC('CALLBACK',hObject,eventData,handles,...) calls the local
% function named CALLBACK in GUIPIC.M with the given input arguments.
%
% GUIPIC('Property','Value',...) creates a new GUIPIC or raises the
% existing singleton*. Starting from the left, property value pairs are
% applied to the GUI before guipic_OpeningFcn gets called. An
% unrecognized property name or invalid value makes property application
% stop. All inputs are passed to guipic_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 guipic
% Last Modified by GUIDE v2.5 13-Mar-2021 17:27:58
% Begin initialization code - DO NOT EDIT
gui_Singleton = 1;
gui_State = struct('gui_Name', mfilename, ...
'gui_Singleton', gui_Singleton, ...
'gui_OpeningFcn', @guipic_OpeningFcn, ...
'gui_OutputFcn', @guipic_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 guipic is made visible.
function guipic_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 guipic (see VARARGIN)
% Choose default command line output for guipic
handles.output = hObject;
% Update handles structure
guidata(hObject, handles);
% UIWAIT makes guipic wait for user response (see UIRESUME)
% uiwait(handles.figure1);
% --- Outputs from this function are returned to the command line.
function varargout = guipic_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 ok.
function ok_Callback(hObject, eventdata, handles)
% hObject handle to ok (see GCBO)
% eventdata reserved - to be defined in a future version of MATLAB
% handles structure with handles and user data (see GUIDATA)
global im
%选择图片路径
[filename,pathname]=...
uigetfile({'*.jpg';'*.bmp';'*.gif'},'选择图片');
%合成路径加文件名
str=[pathname filename];
%读取图片
im=imread(str);
%使用第一个AXES
axes(handles.axes1);
%显示图片
imshow(im);
% --- Executes on button press in pushbutton2.
function pushbutton2_Callback(hObject, eventdata, handles)
% hObject handle to pushbutton2 (see GCBO)
% eventdata reserved - to be defined in a future version of MATLAB
% handles structure with handles and user data (see GUIDATA)
close(gcf)
3 仿真结果
4 参考文献
[1]吴曦. 基于MATLAB的图像边缘检测算法的研究和实现[D]. 吉林大学.
博主简介：擅长智能优化算法、神经网络预测、信号处理、元胞自动机、图像处理、路径规划、无人机等多种领域的Matlab仿真，相关matlab代码问题可私信交流。
部分理论引用网络文献，若有侵权联系博主删除。
