四、源码
1、打开图像
file = fullfile(pwd, 'test/下载.jpg');
[Filename, Pathname] = uigetfile({'*.jpg;*.tif;*.png;*.gif','All Image Files';...'*.*','All Files' }, '载入验证码图像',...file);
if isequal(Filename, 0) || isequal(Pathname, 0)return;
end
% 显示图像
axes(handles.axes1); cla reset;
axes(handles.axes2); cla reset;
set(handles.axes1, 'Box', 'on', 'Color', 'c', 'XTickLabel', '', 'YTickLabel', '');
set(handles.axes2, 'Box', 'on', 'Color', 'c', 'XTickLabel', '', 'YTickLabel', '');
set(handles.axes3, 'Box', 'on', 'Color', 'c', 'XTickLabel', '', 'YTickLabel', '');
set(handles.axes4, 'Box', 'on', 'Color', 'c', 'XTickLabel', '', 'YTickLabel', '');%set(handles.text4, 'String', '');
% 存储
fileurl = fullfile(Pathname,Filename);
Img = imread(fileurl);
imshow(Img, [], 'Parent', handles.axes1);
title('原图')2、去噪
% 颜色空间转换
hsv = rgb2hsv(Img);
h = hsv(:, :, 1);
s = hsv(:, :, 2);
v = hsv(:, :, 3);bw1 = h > 0.16 & h < 0.30;
bw2 = s > 0.65 & s < 0.80;
bw = bw1 & bw2;3、定位
while s1 < sz(2)for i = s1 : sz(2)% 移动游标s2 = i;if cs(s2) < tol && flag == 1% 达到起始位置flag = 2;S1 = [S1 s2-1];break;elseif cs(s2) >= tol && flag == 2% 达到结束位置flag = 1;E1 = [E1 s2];break;endends1 = s2 + 1;
end4、分割
% 加入红色边框
Ti = handles.Ti;
It = [];
spcr = ones(size(Ti{1}, 1), 3)*255;
spcg = ones(size(Ti{1}, 1), 3)*0;
spcb = ones(size(Ti{1}, 1), 3)*0;
spc = cat(3, spcr, spcg, spcb);
% 整合到一起
length(Ti)
It = [It spc];
for i = 1 : length(Ti)ti = Ti{i};    ti = cat(3, ti, ti, ti);   ti = im2uint8(mat2gray(ti));axes(handles.(sprintf('axes%d', i+4)));imshow(ti)It = [It ti spc];end
imshow(It, [], 'Parent', handles.axes4); hold on;
5、识别
% 比对识别
fileList = GetAllFiles(fullfile(pwd, 'Databse'));%GetALLFiles.m这个是子函数，到文件夹对应看这个代码
Tj = [];
for i = 1 : length(fileList)%filenamei = fileList{i};[pathstr, name, ext] = fileparts(filenamei);if isequal(ext, '.jpg')ti = imread(filenamei);ti = im2bw(ti, 0.5);ti = double(ti);% 提取不变矩特征数据phii = invmoments(ti);%invmoments.m% 开始比对OTj = [];for j = 1 : length(Ti)tij = double(Ti{j});phij = invmoments(tij);ad = norm(phii-phij);%不变矩对比做差otij.filename = filenamei;otij.ad = ad;OTj = [OTj otij];endTj = [Tj; OTj];end
end
% 生成结果
r = [];
for i = 1 : size(Tj, 2)ti = Tj(:, i);adi = cat(1, ti.ad);[minadi, ind] = min(adi);filenamei = ti(ind).filename;[pathstr, name, ext] = fileparts(filenamei);name = name(1);r = [r name];
end
set(handles.text11, 'String', r);