www.gusucode.com > 有监督的 CNN 网络完成对MNIST 数字的识别 > 有监督的 CNN 网络完成对MNIST 数字的识别/CNN—卷积神经网络数字识别/cnet_tool.m
function varargout = cnet_tool(varargin)
% 更方便将MNIST数据文件中(t10k-images-idx3-ubyte、
% t10k-labels-idx1-ubyte train-images-idx3-ubyte
% 和train-labels-idx1-ubyte)读取出来，
% 所以演示可以自动找到他们。
% 2014-12-12
mInputArgs = varargin; % 变长度输入宗量，调用GUI（Graphical User Interface 图形用户界面）时命令行参数
mOutputArgs = {}; % 变量用于存储输出当GUI返回
mIconCData = []; % 用CData的图标编辑这个GUI的维度
% (mIconHeight,mIconWidth,3)
mIsEditingIcon = false; % 标记显示当前鼠标移动是否用于编辑颜色
% 变量支持自定义属性/值配对
mPropertyDefs = {... % 支持自定义属性/值配对的GUI
'iconwidth', @localValidateInput, 'mIconWidth';
'iconheight', @localValidateInput, 'mIconHeight';
'MNISTfile', @localValidateInput, 'mMNISTFile'};
mIconWidth = 28; % 通过使用输入属性来初始化“iconwidth”
mIconHeight = 28; % 通过使用输入属性来初始化“iconheight”
%
%
mMNISTFile = './MNIST/t10k-images-idx3-ubyte'; %格式满足(根目录,'./');
%
%
Images = {0};
im_ptr = 1;
autorecognition = false;
tmp = load('cnet.mat');
cnet = tmp.sinet;
% %在这个GUI上创建所有UI对象,这样可以在这个GUI用对应的函数
hMainFigure = figure(...
'Units','characters',...
'MenuBar','none',...
'Toolbar','none',...
'Position',[71.8 34.7 106 36.15],...
'WindowStyle', 'normal',...
'WindowButtonDownFcn', @hMainFigureWindowButtonDownFcn,...
'WindowButtonUpFcn', @hMainFigureWindowButtonUpFcn,...
'WindowButtonMotionFcn', @hMainFigureWindowButtonMotionFcn);
hIconEditPanel = uipanel(...
'Parent',hMainFigure,...
'Units','characters',...
'Clipping','on',...
'Position',[1.8 4.3 68.2 27.77]);
hIconEditAxes = axes(...
'Parent',hIconEditPanel,...
'vis','off',...
'Units','characters',...
'Position',[2 1.15 64 24.6]);
hIconFileText = uicontrol(...
'Parent',hMainFigure,...
'Units','characters',...
'HorizontalAlignment','left',...
'Position',[3.8 32.9 16.2 1.46],...
'String','MNIST 文件夹: ',...
'Style','text');
hIconFileEdit = uicontrol(...
'Parent',hMainFigure,...
'Units','characters',...
'HorizontalAlignment','left',...
'Position',[19.8 32.9 78.2 1.62],...
'String','创建一个新的图标或键入一个图标图像文件进行编辑',...
'Enable','inactive',...
'Style','edit',...
'ButtondownFcn',@hIconFileEditButtondownFcn,...
'Callback',@hIconFileEditCallback);
hIconFileButton = uicontrol(...
'Parent',hMainFigure,...
'Units','characters',...
'Callback',@hIconFileButtonCallback,...
'Position',[98 32.85 5.8 1.77],...
'String','...',...
'TooltipString','Import From Image File');
hPreviewPanel = uipanel(...
'Parent',hMainFigure,...
'Units','characters',...
'Title','预览',...
'Clipping','on',...
'Position',[71.8 19.15 32.2 13]);
hPreviewControl = uicontrol(...
'Parent',hPreviewPanel,...
'Units','characters',...
'Enable','inactive',...
'Visible','off',...
'Position',[2 3.77 16.2 5.46],...
'String','');
hPrevDigitButton = uicontrol(...
'Parent',hMainFigure,...
'Units','characters',...
'Position',[80 20 5 2],...
'String','<',...
'Callback',@hPrevDigitButtonCallback);
hNextDigitButton = uicontrol(...
'Parent',hMainFigure,...
'Units','characters',...
'Position',[91.7 20 5 2],...
'String','>',...
'Callback',@hNextDigitButtonCallback);
hAutorecognitionCheck = uicontrol(...
'Parent', hMainFigure,...
'Units', 'characters',...
'HorizontalAlignment', 'left',...
'Position', [71.8 17.6 32.2 1],...
'String','自动识别',...
'Style','CheckBox', ...
'Callback',@hAutorecognitionCheckCallback, ...
'Value', 0);
hResultPanel = uipanel(...
'Parent',hMainFigure,...
'Units','characters',...
'Title','识别结果显示',...
'Clipping','on',...
'Position',[71.8 4.3 32.2 13]);
hResultText = uicontrol(...
'Parent',hResultPanel,...
'Units','normalized',...
'Style','text', ...
'Enable','inactive',...
'Visible','on',...
'FontSize', 50, ...
'Position',[.2 .2 .6 .6],...
'String','');
for i = 0:9,
hResultDigits(1+i) = uicontrol(...
'Parent',hResultPanel,...
'Units','normalized',...
'Enable','inactive',...
'Style','text', ...
'FontSize', 14, ...
'Position',[.02+i*.095 .05 .09 .128],...
'String', char('0'+i), ...
'ForegroundColor', [1 1 1]);
end
hSectionLine = uipanel(...
'Parent',hMainFigure,...
'Units','characters',...
'HighlightColor',[0 0 0],...
'BorderType','line',...
'Title','',...
'Clipping','on',...
'Position',[2 3.62 102.4 0.077]);
hOKButton = uicontrol(...
'Parent',hMainFigure,...
'Units','characters',...
'Position',[65.8 0.62 17.8 2.38],...
'String','确定',...
'Callback',@hOKButtonCallback);
hCancelButton = uicontrol(...
'Parent',hMainFigure,...
'Units','characters',...
'Position',[85.8 0.62 17.8 2.38],...
'String','取消',...
'Callback',@hCancelButtonCallback);
hRecognizeButton = uicontrol(...
'Parent',hMainFigure,...
'Units','characters',...
'Position',[10.0 0.62 17.8 2.38],...
'String','识别',...
'Callback',@hRecognizeButtonCallback);
hClearButton = uicontrol(...
'Parent',hMainFigure,...
'Units','characters',...
'Position',[30.0 0.62 17.8 2.38],...
'String','清除',...
'Callback',@hClearButtonCallback);
% host ColorPalette PaletteContainer和保持功能,处理让其选择颜色编辑图标
% 改变所需的合适的外观和运行在不同的平台上
prepareLayout(hMainFigure);
% 当调用GUI时提供处理输入参数的命令行
processUserInputs();
% 初始化iconEditor，使用默认或自定义的数据通过属性/值对
localUpdateIconPlot();
% 使GUI出现在屏幕上
set(hMainFigure,'visible', 'on');
movegui(hMainFigure,'onscreen');
% 使GUI阻塞（blocking）
uiwait(hMainFigure);
% 如果请求，返回编辑图标CData
mOutputArgs{1} =mIconCData;
if nargout>0
[varargout{1:nargout}] = mOutputArgs{:};
end
%------------------------------------------------------------------
function hMainFigureWindowButtonDownFcn(hObject, eventdata)
%鼠标在图上被按下时调用。
%用来改变特定的图标的颜色数据点下鼠标的当前选中colorPalette的颜色
if (ancestor(gco,'axes') == hIconEditAxes)
mIsEditingIcon = true;
localEditColor();
end
end
%------------------------------------------------------------------
function hMainFigureWindowButtonUpFcn(hObject, eventdata)
% 释放窗口当鼠标点击退出编辑模式的图标
mIsEditingIcon = false;
end
%------------------------------------------------------------------
function hMainFigureWindowButtonMotionFcn(hObject, eventdata)
%回调时调用鼠标移动,这样可以更新图标颜色数据的编辑模式
if (ancestor(gco,'axes') == hIconEditAxes)
localEditColor();
end
end
%------------------------------------------------------------------
function hIconFileEditCallback(hObject, eventdata)
% %的回调时调用用户改变了图标文件名称的图标可以加载
file = get(hObject,'String');
if exist(file, 'file') ~= 2
errordlg(['The given icon file cannot be found ' 10, file], ...
'Invalid Icon File', 'modal');
set(hObject, 'String', mMNISTFile);
else
mIconCData = [];
localUpdateIconPlot();
end
end
%------------------------------------------------------------------
function hIconFileEditButtondownFcn(hObject, eventdata)
%调称用户第一次按下鼠标的editbox图标文件
set(hObject,'String','');
set(hObject,'Enable','on');
set(hObject,'ButtonDownFcn',[]);
uicontrol(hObject);
end
%------------------------------------------------------------------
function hOKButtonCallback(hObject, eventdata)
% OK按钮被按下时调用
uiresume;
delete(hMainFigure);
end
%------------------------------------------------------------------
function hCancelButtonCallback(hObject, eventdata)
% 取消按钮被按下时调用
mIconCData =[];
uiresume;
delete(hMainFigure);
end
%------------------------------------------------------------------
function hRecognizeButtonCallback(hObject, eventdata)
Ip = preproc_image(mIconCData);
[out cnet] = sim(cnet, Ip);
max_out = max(out);
for out_i = 1:numel(out),
set(hResultDigits(out_i), 'ForegroundColor', [1 1 1]*(1.8-out(out_i))/3.6)
end
digit = find(out == max_out, 1) - 1;
if ~isempty(digit),
set(hResultText, 'string', char('0'+digit), 'ForegroundColor', [1 1 1]*(1.8-max_out)/3.6)
end
end
%------------------------------------------------------------------
function hClearButtonCallback(hObject, eventdata)
mIconCData = ones(mIconHeight, mIconWidth, 3);
localUpdateIconPlot();
if autorecognition,
hRecognizeButtonCallback(hObject, eventdata)
end
end
%------------------------------------------------------------------
function hAutorecognitionCheckCallback(hObject, eventdata)
autorecognition = get(hAutorecognitionCheck, 'Value');
if autorecognition,
hRecognizeButtonCallback(hObject, eventdata)
end
end
%------------------------------------------------------------------
function hIconFileButtonCallback(hObject, eventdata)
%回调时调用的图标文件选择按钮被按下
filespec = {'*.*', 'Database file '};
[filename, pathname] = uigetfile(filespec, 'Pick an database file', mMNISTFile);
if ~isequal(filename,0)
mMNISTFile = fullfile(pathname, filename);
set(hIconFileEdit, 'ButtonDownFcn',[]);
set(hIconFileEdit, 'Enable','on');
mIconCData = [];
localUpdateIconPlot();
elseif isempty(mIconCData)
set(hPreviewControl,'Visible', 'off');
end
end
function hPrevDigitButtonCallback(hObject, eventdata)
if(im_ptr>1)
im_ptr=im_ptr-1;
end
im = abs(double(Images{im_ptr})/255-1)';
mIconCData = cat(3,im,im,im);
localUpdateIconPlot();
if autorecognition,
hRecognizeButtonCallback(hObject, eventdata)
end
end
function hNextDigitButtonCallback(hObject, eventdata)
if(im_ptr<numel(Images))
im_ptr=im_ptr+1;
end
im = abs(double(Images{im_ptr})/255-1)';
mIconCData = cat(3,im,im,im);
localUpdateIconPlot();
if autorecognition,
hRecognizeButtonCallback(hObject, eventdata)
end
end
%------------------------------------------------------------------
function localEditColor
% helper函数改变一个图标的颜色数据点在colorPalette当前选中的颜色
if mIsEditingIcon
pt = get(hIconEditAxes,'currentpoint');
x = max(1, min(ceil(pt(1,1)), mIconWidth));
y = max(1, min(ceil(pt(1,2)), mIconHeight));
% 更新颜色选择
m = get(gcf,'SelectionType');
if m(1) == 'n', % 左按钮按下
mIconCData(y, x,:) = 0;
if y<mIconHeight, mIconCData(y+1,x,:) = .8*mIconCData(y+1,x,:); end
if x<mIconWidth, mIconCData(y,x+1,:) = .8*mIconCData(y,x+1,:); end
if y>1, mIconCData(y-1,x,:) = .8*mIconCData(y-1,x,:); end
if x>1, mIconCData(y,x-1,:) = .8*mIconCData(y,x-1,:); end
else
mIconCData(y, x,:) = 1;
end
localUpdateIconPlot();
end
end
%------------------------------------------------------------------
function localUpdateIconPlot
% 时更新iconEditor helper函数图标数据更改
% 初始化图标CData如果没有初始化
if isempty(mIconCData)
if exist(mMNISTFile, 'file') == 2
try
Images = readMNIST_image(mMNISTFile,1000);
%im_ptr = 1;
im = abs(double(Images{im_ptr})/255-1)';
mIconCData = cat(3,im,im,im);
set(hIconFileEdit, 'String', mMNISTFile);
catch
errordlg(['Could not load MNIST database file successfully. ',...
'Make sure the file name is correct: ' mMNISTFile],...
'Invalid MNIST File', 'modal');
mIconCData = nan(mIconHeight, mIconWidth, 3);
end
else
mIconCData = nan(mIconHeight, mIconWidth, 3);
end
end
% 更新预览控件
rows = size(mIconCData, 1);
cols = size(mIconCData, 2);
previewSize = getpixelposition(hPreviewPanel);
% 标题
previewSize(4) = previewSize(4) -15;
controlWidth = previewSize(3);
controlHeight = previewSize(4);
controlMargin = 6;
if rows+controlMargin<controlHeight
controlHeight = rows+controlMargin;
end
if cols+controlMargin<controlWidth
controlWidth = cols+controlMargin;
end
setpixelposition(hPreviewControl,[(previewSize(3)-controlWidth)/2,(previewSize(4)-controlHeight)/2, controlWidth, controlHeight]);
set(hPreviewControl,'CData', mIconCData,'Visible','on');
% 更新 图标编辑窗格
set(hIconEditPanel, 'Title',['图标编辑窗格 (', num2str(rows),' X ', num2str(cols),')']);
s = findobj(hIconEditPanel,'type','surface');
if isempty(s)
gridColor = get(0, 'defaultuicontrolbackgroundcolor') - 0.2;
gridColor(gridColor<0)=0;
s=surface('edgecolor',gridColor,'parent',hIconEditAxes);
end
% 设置xdata、ydata zdata以防行和/或关口的变化
set(s,'xdata',0:cols,'ydata',0:rows,'zdata',zeros(rows+1,cols+1),'cdata',localGetIconCDataWithNaNs());
set(hIconEditAxes,'drawmode','fast','xlim',[-.5 cols+.5],'ylim',[-.5 rows+.5]);
axis(hIconEditAxes, 'ij', 'off');
end
%------------------------------------------------------------------
function cdwithnan = localGetIconCDataWithNaNs()
% 增加非数值（NaN）的边缘mIconCData将整个图标呈现在图窗格中。这是必要的,因为表面的行为。
cdwithnan = mIconCData;
cdwithnan(:,end+1,:) = NaN;
cdwithnan(end+1,:,:) = NaN;
end
%------------------------------------------------------------------
function processUserInputs
% helper函数,处理输入属性/值对
% 应用可能的图和可辨认的自定义属性/值对
for index=1:2:length(mInputArgs)
if length(mInputArgs) < index+1
break;
end
match = find(ismember({mPropertyDefs{:,1}},mInputArgs{index}));
if ~isempty(match)
% 验证输入,并将其分配给一个变量
if ~isempty(mPropertyDefs{match,3}) && mPropertyDefs{match,2}(mPropertyDefs{match,1}, mInputArgs{index+1})
assignin('caller', mPropertyDefs{match,3}, mInputArgs{index+1})
end
else
try
set(topContainer, mInputArgs{index}, mInputArgs{index+1});
catch
% 如果这不是一个有效的图属性值对,让两个去到下一个
continue;
end
end
end
end
%------------------------------------------------------------------
function isValid = localValidateInput(property, value)
% helper函数来验证用户提供输入属性/值对。你可以在这里选择显示警告或错误。
isValid = false;
switch lower(property)
case {'iconwidth', 'iconheight'}
if isnumeric(value) && value >0
isValid = true;
end
case 'MNISTfile'
if exist(value,'file')==2
isValid = true;
end
end
end
end % iconEditor结束
%------------------------------------------------------------------
function prepareLayout(topContainer)
%这个效用函数负责相关问题的外观和运行在多个平台上。
%可以重用该函数在其他gui或修改它以适合你的需要。
allObjects = findall(topContainer);
warning off %临时报告修复
try
titles=get(allObjects(isprop(allObjects,'TitleHandle')), 'TitleHandle');
allObjects(ismember(allObjects,[titles{:}])) = [];
catch
end
warning on
% 使用这个GUI文件的名称作为标题的数字
defaultColor = get(0, 'defaultuicontrolbackgroundcolor');
if isa(handle(topContainer),'figure')
set(topContainer,'Name', mfilename, 'NumberTitle','off');
% 使GUI对象的图颜色匹配
set(topContainer, 'Color',defaultColor);
end
% 使GUI对象可用于回调,这样他们不能改变意外其他MATLAB命令
set(allObjects(isprop(allObjects,'HandleVisibility')), 'HandleVisibility', 'Callback');
% 使GUI的正常运行在多个平台上使用合适的单位
if strcmpi(get(topContainer, 'Resize'),'on')
set(allObjects(isprop(allObjects,'Units')),'Units','Normalized');
else
set(allObjects(isprop(allObjects,'Units')),'Units','Characters');
end
%你可能想要修改editbox,popupmenu上默认的颜色,在Windows上列表框白色
if ispc
candidates = [findobj(allObjects, 'Style','Popupmenu'),...
findobj(allObjects, 'Style','Edit'),...
findobj(allObjects, 'Style','Listbox')];
set(findobj(candidates,'BackgroundColor', defaultColor), 'BackgroundColor','white');
end
end
function out = preproc_image(id)
%图像预处理
Inorm = id(:,:,1);
Inorm(~isfinite(Inorm)) = 1;
Inorm = abs(Inorm-1)';
out = zeros(32);
out(3:30,3:30) = Inorm;
if sum(out(:))>0,
gain = 1./ std(out(:));
out = (out - mean(out(:))).*gain;
end
end
function I = readMNIST_image(filepath,num)
%读MNIST_image MNIST handwriten阅读图像数据库。读取只有图片没有标签,指定文件名
%
%的语法
%
% I = readMNIST_image(filepath num)
%
%的描述
%的输入:
% filepath——名称数据库文件的路径
% n -图像处理的数量
%输出:
% I - 28 x28训练图像大小的单元阵列
% = = = = = = = = = = =加载训练集
fid = fopen(filepath,'r','b'); %大端法（二进位资料次序）
magicNum = fread(fid,1,'int32'); %幻数
if(magicNum~=2051)
display('Error: cant find magic number');
return;
end
imgNum = fread(fid,1,'int32'); %图片的数量
rowSz = fread(fid,1,'int32'); %图片的高度
colSz = fread(fid,1,'int32'); %图片的宽度
if(num<imgNum)
imgNum=num;
end
for k=1:imgNum
I{k} = uint8(fread(fid,[rowSz colSz],'uchar'));
end
fclose(fid);
end