【人民币识别】基于RGB颜色空间实现人民币识别附matlab代码

1 简介

市场上人民币变色油墨受损,其特征表现具有多样性,部分仅仅在表面上进行稍微涂污或摩擦,在灰度值上变化并不明显或处于设定的临界阈值附近。而通过调整每个通道图像的检测灰度阈值的方法,固然可以提高检测灵敏度,但是会严重影响正常钞票的通过率,造成大量变色油墨拒钞,所以不能从根本上解决问题。本文针对多光谱图像钞票检测设备,通过RGB色彩空间对变色油墨字符颜色属性的进行量化描述,然后对量化后的颜色值进行逻辑判别,则能大大提高变色油墨受损钞票的检测效果。​

2 部分代码

function varargout = rmb(varargin)% RMB M-file for rmb.fig%      RMB, by itself, creates a new RMB or raises the existing%      singleton*.%%      H = RMB returns the handle to a new RMB or the handle to%      the existing singleton*.%%      RMB('CALLBACK',hObject,eventData,handles,...) calls the local%      function named CALLBACK in RMB.M with the given input arguments.%%      RMB('Property','Value',...) creates a new RMB or raises the%      existing singleton*.  Starting from the left, property value pairs are%      applied to the GUI before rmb_OpeningFcn gets called.  An%      unrecognized property name or invalid value makes property application%      stop.  All inputs are passed to rmb_OpeningFcn via varargin.%%      *See GUI Options on GUIDE's Tools menu.  Choose "GUI allows only one%      instance to run (singleton)".% ​% Begin initialization code - DO NOT EDITgui_Singleton = 1;​gui_State = struct('gui_Name',       mfilename, ...                   'gui_Singleton',  gui_Singleton, ...                   'gui_OpeningFcn', @rmb_OpeningFcn, ...                   'gui_OutputFcn',  @rmb_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 rmb is made visible.function rmb_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 rmb (see VARARGIN)% Choose default command line output for rmbhandles.output = hObject;% Update handles structureguidata(hObject, handles);% UIWAIT makes rmb wait for user response (see UIRESUME)% uiwait(handles.figure1);​% --- Outputs from this function are returned to the command line.function varargout = rmb_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;​​global out;​out=0;% --- Executes on button press in pushbutton2.function pushbutton2_Callback(hObject, eventdata, handles)recgnise();global result;global l;global x;global I6;global I5;global out;out=out+result;set(handles.text3,'string',out);set(handles.text9,'string',result);​axes(handles.axes1);imshow(l);axes(handles.axes2);imshow(x);axes(handles.axes3);imshow(I6);axes(handles.axes4);imshow(I5);​​% 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)​​​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 during object creation, after setting all properties.function axes1_CreateFcn(hObject, eventdata, handles)% hObject    handle to axes1 (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 axes1​

3 仿真结果

4 参考文献

[1]崔山领, 王倩文, 徐靖. 一种基于Lab色彩空间的人民币变色油墨检测方法[C]// IT时代周刊论文专版(第317期). 2015.

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