基于MATLAB的手写体数字识别系统

五、参考代码

附录1 预处理

%% 数字识别 (I):Image Pre-processing

%% Manual Cropping

img = imread('sample.bmp');

imshow(img)

imgGray = rgb2gray(img);

imgCrop = imcrop(imgGray);

imshow(imgCrop)

imgLGE = imresize(imgCrop, 5, 'bicubic');

imshow(imgLGE)

参考 源码：MATLAB手写数字识别GUI设计.zip-专业指导文档类资源-CSDN下载

imgRTE = imrotate(imgLGE, 35);

imshow(imgRTE)

imgBW = im2bw(imgLGE, 0.90455);

imshow(imgBW)

附录2

%% 数字识别 (II):Automating Image Pre-processing

I = imread('sample.bmp');

imshow(I)

pause;

Igray = rgb2gray(I);

imshow(Igray)

pause;

Ibw = im2bw(Igray,graythresh(Igray));

imshow(Ibw)

pause;

Iedge = edge(uint8(Ibw));

imshow(Iedge)

pause;

se = strel('square',2);

Iedge2 = imdilate(Iedge, se);

imshow(Iedge2);

pause;

Ifill= imfill(Iedge2,'holes');

imshow(Ifill)

pause;

pause;

hold on;

for cnt = 1:50

rectangle('position',Ibox(:,cnt),'edgecolor','r');

end

附录3

%% 神经网络的设计与训练ining a Simple NN for

%% classification

I = imread('sample.bmp');

img = edu_imgpreprocess(I);

for cnt = 1:50

bw2 = edu_imgcrop(img{cnt});

charvec = edu_imgresize(bw2);

out(:,cnt) = charvec;

end

P = out(:,1:40);

T = [eye(10) eye(10) eye(10) eye(10)];

Ptest = out(:,41:50);

附录4

%%图形界面

function varargout = charGUI(varargin)

% CHARGUI M- charGUI.fig

% CHARGUI, by itself, creates a new CHARGUI or raises the existing

% singleton*.

% H = CHARGUI returns the handle to a new CHARGUI or the handle to

% the existing singleton*.

% CHARGUI('CALLBACK',hObject,eventData,handles,...) calls the local

% function named CALLBACK in CHARGUI.M with the given input arguments.

% CHARGUI('Property','Value',...) creates a new CHARGUI or raises the

% existing singleton*. Starting from the left, property value pairs are

% applied to the GUI before charGUI_OpeningFunction gets called. An

% unrecognized property name or invalid value makes property application

% stop. All inputs are passed to charGUI_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 charGUI

% Last Modified by GUIDE v2.5 03-Jul-2008 17:55:35

% Begin initialization code - DO NOT EDIT

gui_Singleton = 1;

gui_State = struct('gui_Name', m, ...

'gui_Singleton', gui_Singleton, ...

'gui_OpeningFcn', @charGUI_OpeningFcn, ...

'gui_OutputFcn', @charGUI_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 charGUI is made visible.

function charGUI_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 charGUI (see VARARGIN)

load data;

assignin('base','net',net);

% Choose default command line output for charGUI

handles.output = hObject;

% Update handles structure

guidata(hObject, handles);

% UIWAIT makes charGUI wait for user response (see UIRESUME)

% uiwait(handles.figure1);

% --- Outputs from this function are returned to the command line.

function varargout = charGUI_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 pbLoad.

function pbLoad_Callback(hObject, eventdata, handles)

% hObject handle to pbLoad (see GCBO)

% eventdata reserved - to be defined in a future version of MATLAB

% handles structure with handles and user data (see GUIDATA)

[, pathname] = uigetfile({'*.bmp';'*.jpg';'*.gif';'*.*'}, 'Pick an Image File');

S = imread([pathname,]);

axes(handles.axes1);

imshow(S);

handles.S = S;

guidata(hObject, handles);

% --- Executes on button press in pbSelect.

function pbSelect_Callback(hObject, eventdata, handles)

% hObject handle to pbSelect (see GCBO)

% eventdata reserved - to be defined in a future version of MATLAB

% handles structure with handles and user data (see GUIDATA)

S = handles.S;

axes(handles.axes1);

img_crop = imcrop(S);

axes(handles.axes2);

imshow(img_crop);

handles.img_crop = img_crop;

guidata(hObject, handles);

% --- Executes on button press in pbPreprocess.

function pbPreprocess_Callback(hObject, eventdata, handles)

% hObject handle to pbPreprocess (see GCBO)

% eventdata reserved - to be defined in a future version of MATLAB

% handles structure with handles and user data (see GUIDATA)

img_crop = handles.img_crop;

imgGray = rgb2gray(img_crop);

bw = im2bw(img_crop,graythresh(imgGray));

axes(handles.axes3);

imshow(bw);

bw2 = edu_imgcrop(bw);

axes(handles.axes4);

imshow(bw2);

handles.bw2 = bw2;

guidata(hObject, handles);

% --- Executes on button press in pbExtract.

function pbExtract_Callback(hObject, eventdata, handles)

% hObject handle to pbExtract (see GCBO)

% eventdata reserved - to be defined in a future version of MATLAB

% handles structure with handles and user data (see GUIDATA)

handles.charvec = charvec;

guidata(hObject, handles);

% --- Executes on button press in pbRecognize.

function pbRecognize_Callback(hObject, eventdata, handles)

% hObject handle to pbRecognize (see GCBO)

% eventdata reserved - to be defined in a future version of MATLAB

% handles structure with handles and user data (see GUIDATA)

charvec = handles.charvec;

selected_net = get(handles.editNN,'string');

selected_net = evalin('base',selected_net);

result = sim(selected_net,charvec);

[val, num] = max(result);

set(handles.editResult, 'string',num);

% --- Executes on button press in pbNN.

function pbNN_Callback(hObject, eventdata, handles)

% hObject handle to pbNN (see GCBO)

% eventdata reserved - to be defined in a future version of MATLAB

% handles structure with handles and user data (see GUIDATA)

function editNN_Callback(hObject, eventdata, handles)

% hObject handle to editNN (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 editNN as text

% str2double(get(hObject,'String')) returns contents of editNN as a double

% --- Executes during object creation, after setting all properties.

function editNN_CreateFcn(hObject, eventdata, handles)

% hObject handle to editNN (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

function editResult_Callback(hObject, eventdata, handles)

% hObject handle to editResult (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 editResult as text

% str2double(get(hObject,'String')) returns contents of editResult as a double

% --- Executes during object creation, after setting all properties.

function editResult_CreateFcn(hObject, eventdata, handles)

% hObject handle to editResult (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.

% --- Executes on button press in pbCrop.

function pbCrop_Callback(hObject, eventdata, handles)

% hObject handle to pbCrop (see GCBO)

% eventdata reserved - to be defined in a future version of MATLAB

% handles structure with handles and user data (see GUIDATA)

附录5 运行界面

%% Rearranging CHARGUI to Make it Resizable and Dockable

% This script reverse-engineers |charGUI| and rebuilds it in a way that is

% both resizable and dockable. It does so using |uipanel| and positioning

% with normalized units.

%% Create a New CHARGUI

% First, create a new instance of |charGUI|.

f = charGUI;

%% Cache the Major GUI Components

% Next, find the major GUI components: |axes|, |uipanel|, and |uicontrol|.

% Keeping references to these items will allow us to lay them out later.

% In the meantime, turn off their visiblity so that the steps taken below

% appear clearly in the GUI.

set(uis,'visible','off');

%% Construct a New Layout Framework

% Use |uipanel| to create the framework for the new GUI layout. Divide the

% space into three portions using normalized units. The first, occupying

% the upper left-hand portion of the GUI, will contain the main axes. The

% second, occupying the right-hand quarter of the GUI, will contain the

% every |uicontrol|. The third, occupuying the bottom 30% of the GUI in

% the left-hand 75%, will contain the processing |axes|.

newpans = zeros(1,3);

for i = 1:3

newpans(i) = uipanel('parent',f,'units','normalized');

end

set(newpans(1),'position',[0 .3 .75 .7]);

set(newpans(2),'position',[.75 0 .25 1]);

set(newpans(3),'position',[0 0 .75 .3]);

%% Populate the First Panel

% By putting the main set of |axes| into a |uipanel|, it can be laid out

% relative to the panel, as opposed to the whole GUI. Use normalized

% units to make sure that the |axes| grow when the |uipanel| grows.

% Position it starting 10% up from the bottom and 10% right from the

% left-hand side of the GUI and have it occupy 80% of the horizontal and

% vertical |uipanel| space.

set(axs(1),'parent',newpans(1),'units','normalized',...

'position',[.1 .1 .8 .8]);

set(get(newpans(1),'children'),'visible','on');

%% Populate the Second Panel

% Parent the |uicontrol| items to the second |uipanel|. Maintain the

% use of characters units so that each |uicontrol| will not grow and shrink

% along with the |uipanel|. Instead, each will maintain the same size and

% placement.

set(uis,'parent',newpans(2));

newuipos = get(uis(1),'position');

newuipos(1:2) = [2 1];

set(uis(1),'position',newuipos);

newuipos = get(uis(3),'position');

newuipos(1:2) = [2 14];

set(uis(3),'position',newuipos);

newuipos(1:2) = [2 18];

set(uis(4),'position',newuipos);

newuipos(1:2) = [2 30];

set(uis(2),'position',newuipos);

newuipos(1:2) = [2 34];

set(uis(7),'position',newuipos);

set(get(newpans(2),'children'),'visible','on');

%% Populate the Third Panel

% Each processing |axes| are already contained within a |uipanel|, which

% merely needs to be positioned within one containing |uipanel|. Again,

% use normalized units so that these will grow and shrink with the

% containing |uipanel|.

%

% Also apply normalized units and new positions to the |axes| contained in

% the subpanels. Doing so will fill in the GUI space and allow us, as the

% GUI grows, to see more detail in the processing.

set(pans,'parent',newpans(3),'units','normalized');

set(pans(4),'position',[.01 .025 .23 .95]);

set(pans(3),'position',[.26 .025 .23 .95]);

set(pans(2),'position',[.51 .025 .23 .95]);

set(pans(1),'position',[.76 .025 .23 .95]);

set(axs(2:5),'units','normalized','position',[.05 .05 .9 .9]);

set(get(newpans(3),'children'),'visible','on');

%% Touch Up the GUI and Make it Resizable

% Put the finishing touches on the GUI. Apply the same background colors

% that exsited before to each new |uipanel| and remove the border. The

% |figure| can now be made resizable. Try docking it by setting its

% |windowstyle| property!

for i = 1:3

set(newpans(i),'backgroundcolor',get(pans(1),'backgroundcolor'),...

'bordertype','none');

end

set(f,'resize','on');

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