图像几何基于投影法测距matlab源码
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一、简介
投影,在立体几何中我们学到过,是空间直线在某个方向上的投影,那么图像处理中也是这种投影思想。
最简单的投影:
水平方向投影,将图像数组进行列求和;
垂直方向投影,将图像数组进行行求和;
对于二值图像或明显特征的灰度图分割前景与背景,经常用到投影法。
二、源代码
function varargout = jiemian(varargin)
% JIEMIAN M-file for jiemian.fig
% JIEMIAN, by itself, creates a new JIEMIAN or raises the existing
% singleton*.
%
% H = JIEMIAN returns the handle to a new JIEMIAN or the handle to
% the existing singleton*.
%
% JIEMIAN('CALLBACK',hObject,eventData,handles,...) calls the local
% function named CALLBACK in JIEMIAN.M with the given input arguments.
%
% JIEMIAN('Property','Value',...) creates a new JIEMIAN or raises the
% existing singleton*. Starting from the left, property value pairs are
% applied to the GUI before jiemian_OpeningFcn gets called. An
% unrecognized property name or invalid value makes property application
% stop. All inputs are passed to jiemian_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 jiemian
% Last Modified by GUIDE v2.5 03-Nov-2012 02:26:28
% Begin initialization code - DO NOT EDIT
gui_Singleton = 1;
gui_State = struct('gui_Name', mfilename, ...
'gui_Singleton', gui_Singleton, ...
'gui_OpeningFcn', @jiemian_OpeningFcn, ...
'gui_OutputFcn', @jiemian_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 jiemian is made visible.
function jiemian_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 jiemian (see VARARGIN)
% Choose default command line output for jiemian
handles.output = hObject;
% Update handles structure
guidata(hObject, handles);
clc;
axes(handles.axes2);
imshow(imread('logo.jpg'));
global file;
global I;
global vid;
global P;P=0;
global n;n=0;
set(handles.edit1,'String','10');
set(handles.edit2,'String','0');
set(handles.edit3,'String','0');
set(handles.edit4,'String','0');
set(handles.edit5,'String','0');
% UIWAIT makes jiemian wait for user response (see UIRESUME)
% uiwait(handles.figure1);
% --- Outputs from this function are returned to the command line.
function varargout = jiemian_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 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)
set(handles.edit6,'String','...');
hold off;
global n;n=0;
set(handles.radiobutton1,'value',1);
set(handles.edit1,'String','10');
set(handles.edit3,'String','0');
set(handles.edit4,'String','0');
set(handles.edit5,'String','0');
global P;
if P==8
global vid;
axes(handles.axes1);
I=getsnapshot(vid);
imshow(I);
set(handles.edit7,'String','“摄像头拍摄图像”');
else
[filename,pathname]=uigetfile({'*.jpg';'*.bmp';'*.tif';'*.*'},'打开图像...');
if isequal(filename,0)|isequal(pathname,0)
errordlg('图像文件未找到','File Error');
else
global file;
global I;
P=1;
file=[pathname,filename];
I=imread(file);
axes(handles.axes1);
imshow(I);
set(handles.edit7,'String','“元件的原始图像”');
end
end
set(handles.edit6,'String','OK');
% --- 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)
set(handles.edit6,'String','...');
hold off;
global file;
global I;
global P;
global n;n=0;
set(handles.radiobutton1,'value',1);
set(handles.edit3,'String','0');
set(handles.edit4,'String','0');
set(handles.edit5,'String','0');
if P==8
axes(handles.axes1);
cla reset;
else if P == 0
errordlg('请先打开图像!','Warning...');
else
P=1;
I=imread(file);
axes(handles.axes1);
imshow(I);
set(handles.edit7,'String','“元件的原始图像”');
end
end
set(handles.edit6,'String','OK');
% --- Executes on button press in pushbutton3.
function pushbutton3_Callback(hObject, eventdata, handles)
% hObject handle to pushbutton3 (see GCBO)
% eventdata reserved - to be defined in a future version of MATLAB
% handles structure with handles and user data (see GUIDATA)
set(handles.edit6,'String','...');
global P;
if P == 0
errordlg('请先打开图像!','Warning...');
else
[filename,pathname]=uiputfile({'*.jpg';'*.bmp';'*.tif';'*.*'},'保存图片...','Undefined');
if ~isequal(filename,0)
str = [pathname filename];
px=getframe(handles.axes1);
cdata = getappdata(gcf,'Timg');
imwrite(px.cdata,str);
else errordlg('保存失败!','Warning...');
end;
end
set(handles.edit6,'String','OK');
% --- Executes on button press in pushbutton4.
function pushbutton4_Callback(hObject, eventdata, handles)
% hObject handle to pushbutton4 (see GCBO)
% eventdata reserved - to be defined in a future version of MATLAB
% handles structure with handles and user data (see GUIDATA)
set(handles.edit6,'String','...');
global P;
P=0;
set(handles.edit3,'String','0');
set(handles.edit4,'String','0');
set(handles.edit5,'String','0');
axes(handles.axes1);
cla reset;
closepreview;
set(handles.edit7,'String','“请先打开图像”');
set(handles.edit6,'String','OK');
% --- Executes on button press in pushbutton5.
function pushbutton5_Callback(hObject, eventdata, handles)
% hObject handle to pushbutton5 (see GCBO)
% eventdata reserved - to be defined in a future version of MATLAB
% handles structure with handles and user data (see GUIDATA)
set(handles.edit6,'String','...');
global I;
global P;
switch P
case 7,errordlg('图像已经完成二值化,请直接测距或复位!','Warning...');
case 6,errordlg('图像已经增强对比度,请放弃该操作或复位!','Warning...');
case 5,errordlg('已经截取目标,请放弃该操作或复位!','Warning...');
case 4,errordlg('已经选取标定目标,请放弃该操作或复位!','Warning...');
case 3,errordlg('图像已经完成几何校正,请放弃该操作或复位!','Warning...');
case 2,errordlg('图像已经完成中值滤波,请放弃该操作或复位!','Warning...');
case 1,P=2;
I=rgb2gray(I); %转化为灰度
I=medfilt2(I,[3 3]); %中值滤波
axes(handles.axes1);
imshow(I);
set(handles.edit7,'String','“中值滤波后的元件图像”');
case 0,errordlg('请先打开图像!','Warning...');
end
三、备注
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