【指纹识别】基于模板匹配算法实现教室指纹打卡系统含Matlab源码（基于matlab的指纹识别技术）

【指纹识别】基于模板匹配算法实现教室指纹打卡系统含Matlab源码（基于matlab的指纹识别技术）

1 简介

指纹识别技术是生物识别技术的一种，正因为指纹具备唯一性和不变性等特征使得指纹识别技术已经被广泛的应用于身份鉴证等多种领域。一般而言，一个指纹数字图像识别系统通常由指纹数字图像预处理、特征提取、保存指纹数字图像及指纹数字图像匹配等四部分过程构成。　　本文对指纹数字图像识别系统的原理和基本过程进行了较为深入的分析与研究。首先对指纹数字图像的分类、基本特征与识别原理进行了详细的论述。其次，在指纹数字图像预处理部分，本文主要对预处理的各个步骤：数字图像分割、数字图像增强、二值化、图像细化等含义及过程进行了详细的分析，并设计了一种合适的指纹数字图像预处理方案。然后详细的论述了指纹数字图像的特征提取与匹配过程，其中指纹数字图像的特征提取是从细化后的指纹数字图像图中提取出端点和分叉点，即细节特征点，此特征点会包含大量的伪特征，这样会非常耗时并且降低匹配的精度，而采用边缘去伪和距离去伪的方法能使伪特征点减少近1/3，然后再提取可靠特征点信息，从而实现指纹数字图像匹配，本文采用了基于MATLAB实现的指纹数字图像细节特征提取方式。在指纹数字图像匹配部分，本文采用基于细节点的指纹数字图像匹配算法，并进行了深入研究。最后，通过对指纹数字图像识别系统算法的详细研究，本文利用MATLAB工具设计并实现了一个指纹数字图像识别系统，完成了对指纹数字图像的处理、特征提取，保存和匹配等功能，利用编码对指纹数字图像进行入库、匹配等操作，从而完成图像的识别来判断是否同一指纹，其比对结果令人满意。

2 部分代码

function varargout = opening(varargin)% OPENING MATLAB code for opening.fig% OPENING, by itself, creates a new OPENING or raises the existing% singleton*.%% H = OPENING returns the handle to a new OPENING or the handle to% the existing singleton*.%% OPENING('CALLBACK',hObject,eventData,handles,...) calls the local% function named CALLBACK in OPENING.M with the given input arguments.%% OPENING('Property','Value',...) creates a new OPENING or raises the% existing singleton*. Starting from the left, property value pairs are% applied to the GUI before opening_OpeningFcn gets called. An% unrecognized property name or invalid value makes property application% stop. All inputs are passed to opening_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 opening% Last Modified by GUIDE v2.5 03-Apr-2021 21:51:27% Begin initialization code - DO NOT EDITgui_Singleton = 1;gui_State = struct('gui_Name', mfilename, ... 'gui_Singleton', gui_Singleton, ... 'gui_OpeningFcn', @opening_OpeningFcn, ... 'gui_OutputFcn', @opening_OutputFcn, ... 'gui_LayoutFcn', [] , ... 'gui_Callback', []);if nargin && ischar(varargin{1}) gui_State.gui_Callback = str2func(varargin{1});endif 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 opening is made visible.function opening_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 opening (see VARARGIN)% Choose default command line output for openinghandles.output = hObject;% Update handles structureguidata(hObject, handles);% UIWAIT makes opening wait for user response (see UIRESUME)% uiwait(handles.figure1);% --- Outputs from this function are returned to the command line.function varargout = opening_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 structurevarargout{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)close(opening);student_screen;% --- 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(opening);teacher_screen;

3 仿真结果

4 参考文献

[1]丁天霞. 基于指纹识别的教室考勤系统的设计与实现[D]. 电子科技大学, 2016.

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