虹膜识别基于形态学实现虹膜检测matlab源码
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形态学通常表示生物学的一个分支,研究动植物的形态和结构。图像中的形态学是数学形态学。简单来讲就是基于形状的一系列图像处理操作。
基本运算包括:二值腐蚀和膨胀、二值开闭运算、骨架抽取、极限腐蚀、击中击不中变换、形态学梯度、Top-hat变换、颗粒分析、流域变换、灰值腐蚀和膨胀、灰值开闭运算、灰值形态学梯度。
膨胀与腐蚀
功能:
- 消除噪声;
- 分割出独立的图像元素,在图像中链接相邻的元素;
- 寻找图像中明显的极大值和极小值区域;
- 求图像的梯度;
膨胀
求局部最大值的操作。将与物体接触的所有背景点合并到该物体中,使边界向外部扩张的过程。可以用来填补物体中的空洞。
核可以是任何形状,有一个单独定义的参考点,锚点。
膨胀就是计算核覆盖的区域的像素点的极大值,把这个极大值赋值给参考点指定的像素,使图像的高亮区域逐渐增长。
函数:void dilate
腐蚀
消除边界点,使边界向内部收缩的过程。可以用来消除小且无意义的物体。
与膨胀相反,求局部最小值的操作。
函数:void erode
开运算、闭运算、形态学梯度、顶帽、黑帽
形态学的高级形态,都是建立在腐蚀和膨胀这两个基本操作之上的。
开运算
先腐蚀后膨胀,具有消除亮度较高的细小区域,在纤细点分离物体,对于较大物体,可以在不明显改变其面积的情况下平滑其边界等作用。
闭运算
先膨胀后腐蚀,它具有填充白色物体内细小黑色区域、连接临近物体的作用,也可以在不明显改变其面积的情况下平滑边界。
形态学梯度
膨胀图和腐蚀图之差,对二值图像操作能将团块的边缘突出出来。
顶帽
原图像与开运算的结果图之差,由于开运算放大了裂缝或者局部低亮度的区域,因此原图中减去开运算后的图,得到的效果图突出了比原图轮廓周围的区域更明亮的区域。
用来分离比邻近点亮一些的斑块。
黑帽
闭运算的结果图与源图像之差。
黑帽运算后的效果图突出了比原图轮廓周围的区域更暗的区域。所以黑帽用来分离比邻近点暗一点的斑块
function varargout = code(varargin)
% CODE M-file for code.fig
% CODE, by itself, creates a new CODE or raises the existing
% singleton*.
%
% H = CODE returns the handle to a new CODE or the handle to
% the existing singleton*.
%
% CODE('CALLBACK',hObject,eventData,handles,...) calls the local
% function named CALLBACK in CODE.M with the given input arguments.
%
% CODE('Property','Value',...) creates a new CODE or raises the
% existing singleton*. Starting from the left, property value pairs are
% applied to the GUI before code_OpeningFcn gets called. An
% unrecognized property name or invalid value makes property application
% stop. All inputs are passed to code_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 code
% Last Modified by GUIDE v2.5 07-May-2020 17:46:00
% Begin initialization code - DO NOT EDIT
gui_Singleton = 1;
gui_State = struct('gui_Name', mfilename, ...
'gui_Singleton', gui_Singleton, ...
'gui_OpeningFcn', @code_OpeningFcn, ...
'gui_OutputFcn', @code_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 code is made visible.
function code_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 code (see VARARGIN)
% Choose default command line output for code
handles.output = hObject;
clc;
% Update handles structure
guidata(hObject, handles);
% UIWAIT makes code wait for user response (see UIRESUME)
% uiwait(handles.figure1);
% --- Outputs from this function are returned to the command line.
function varargout = code_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)
global str
global filenamestr
global I2;
[filename,pathname]=uigetfile({'*.bmp';'*.jpg';'*.gif'},'选择图片');
if isequal(filename,0)
disp('Users Selected Canceled');
else
str=[pathname,filename];
filenamestr=filename;
im = imread(str);
I2 = imread(str);
axes(handles.axes1);%axes1是坐标轴的标示
imshow(im);
end
% --- Executes on button press in pushbutton2.
function pushbutton2_Callback(hObject, eventdata, handles) %识别
% 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)
global str
global template
global mask
global filenamestr
testimage=str;
hmthresh = 0.3;
write = 0;
nname=filenamestr(1:4);
samep=1; %判断是不是要与当前同一个人对比
if samep
InputPath=['.\\',nname,'\\']; %同一个人
else
InputPath='.\\0024\\'; %不同人
end
if exist(InputPath)
% [result,time] = final1(str)
templatetest=template;
masktest=mask;
tic
shibie();
axes(handles.axes12);
pic=[InputPath,result];
imshow(pic);title('匹配到虹膜');
else
result='o~o, No match found!';
end
set(handles.text2,'String',result);
t=toc;
disp(['识别用时:',num2str(t)])
% --- Executes on button press in pushbutton3.
function pushbutton3_Callback(hObject, eventdata, handles) %图片运算
% 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)
global str
global I2;
%I2=imread('image004.jpg');
% axes(handles.axes2);
% imshow(I2);
eI=edge(I2,'canny', 0.2);
axes(handles.axes3);
imshow(eI);title('canny边缘提取');
% 利用hough变换找到图像中的一个圆
[y0detect,x0detect,Accumulator] = houghcircle(eI,45,4);
axes(handles.axes4);
imshow(I2);
hold on;
for i=1:length(y0detect)
plot(x0detect,y0detect,'.r');hold on;
end
% figure;imshow(I2)
axes(handles.axes13);
imshow(Accumulator,[]);
[r,c]=size(I2);
M = circle( c,r,x0detect,y0detect,45);
axes(handles.axes5);
imshow(M,[]);
outI=M.*double(I2);
axes(handles.axes6);
imshow(outI,[]);
outI2=(1-M).*double(I2);
axes(handles.axes7);
imshow(outI2,[]);
function edit1_Callback(hObject, eventdata, handles)
% hObject handle to edit1 (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 edit1 as text
% str2double(get(hObject,'String')) returns contents of edit1 as a double
% --- Executes during object creation, after setting all properties.
function edit1_CreateFcn(hObject, eventdata, handles)
% hObject handle to edit1 (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 pushbutton4.
function pushbutton4_Callback(hObject, eventdata, handles) %定位
% 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)
global str
global DIAGPATH % path for writing diagnostic images
%DIAGPATH = 'C:\\Documents and Settings\\Administrator\\桌面\\iris';
% DIAGPATH = 'D:\\虹膜识别\\算法\\iris-张冲\\template';
DIAGPATH = '.\\0023\\template';
eyeimage_filename=str;
write=0;
dingwei();
% --- Executes on button press in pushbutton5.
function pushbutton5_Callback(hObject, eventdata, handles) %归一化
% 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)
global str
global polar_array
global noise_array
eyeimage_filename=str;
%参数设置
%normalisation parameters
radial_res = 100;
angular_res = 240;
write=0;
% with these settings a 9600 bit iris template is created
guiyihua();
% --- Executes on button press in pushbutton6.
function pushbutton6_Callback(hObject, eventdata, handles)%特征提取
% hObject handle to pushbutton6 (see GCBO)
% eventdata reserved - to be defined in a future version of MATLAB
% handles structure with handles and user data (see GUIDATA)
%feature encoding parameters
global str
global polar_array
global noise_array
global template
global mask
eyeimage_filename=str;
nscales=1;
minWaveLength=18;
mult=1; % not applicable if using nscales = 1
sigmaOnf=0.5;
tezhengtiqu()
% --- Executes during object creation, after setting all properties.
function axes10_CreateFcn(hObject, eventdata, handles) %归一化
% hObject handle to axes10 (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 axes10
% --- Executes on button press in pushbutton8.
% hObject handle to pushbutton8 (see GCBO)
% eventdata reserved - to be defined in a future version of MATLAB
% handles structure with handles and user data (see GUIDATA)
% --- Executes on button press in pushbutton9.
function pushbutton9_Callback(hObject, eventdata, handles) %退出
% hObject handle to pushbutton9 (see GCBO)
% eventdata reserved - to be defined in a future version of MATLAB
% handles structure with handles and user data (see GUIDATA)
clc;
close all;
% --- Executes during object creation, after setting all properties.
function axes4_CreateFcn(hObject, eventdata, handles)
% hObject handle to axes4 (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 axes4
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