图像分割

function digitalDivide_Callback(hObject, eventdata, handles)% hObject    handle to digitalDivide (see GCBO)% eventdata  reserved - to be defined in a future version of MATLAB% handles    structure with handles and user data (see GUIDATA)global Img_noNoiseglobal Img_Divideglobal t1global nglobal isnoNoiseglobal isDivideisDivide = 0;    Img_Divide = Img_noNoise;    [rowBit, colBit] = find(Img_Divide == 1); %找到字符的最大范围 rowBit与colBit都是与字符像素点个数相同的一维数组     imin=min(rowBit);    imax=max(rowBit);    jmin=min(colBit);    jmax=max(colBit);    %下面的代码用于标识出每个字符的范围    flag = false;%flag 用作是否进入一个字符分割的标志    k = 1;    for j = jmin : jmax + 1        if (max(size(find(Img_Divide(imin : imax, j) == 1))) - 1) == 0 %在第j列中没有找到像素为1（白点， 代表字符）的点            if flag == true;                t1(1, k) = j - 1;  %t1的第一行偶数记录分割数字的右边界                k = k + 1;                flag = false;            end                         else%在第j列中存在像素为1（白点，代表字符）的点            if flag == false                flag = true;                t1(1, k) = j; %t1的第一行奇数记录分割数字的左边界                k = k + 1;            end        end    end    n = max(size(t1)) / 2;%m为待识别数字的个数    for i = 1 : n           j = 2 * i;        for k = imin : imax%由上到下寻找上边界             if (max(size(find(Img_noNoise(k, t1(1, j - 1) : t1(1, j)) == 1))) - 1) > 0% 在对应的列中找到了分割数字的上边界                 t1(2,j - 1) = k;  %t1的第二行奇数列分别记录分割数字的上边界                 break;             end        end    end    for i = 1 : n           j = 2 * i;        for k = imax : -1 : imin%由下到上寻找下边界             if (max(size(find(Img_noNoise(k, t1(1, j - 1) : t1(1, j)) == 1))) -1) > 0% 在对应的列中找到了分割数字的下边界                 t1(2, j) = k;  %t1的第二行偶数列分别记录分割数字的下边界                 break;             end        end    endaxes(handles.axes1);imshow(Img_noNoise)hold on for i = 1 : n    j = 2 * i;    plot([t1(1, j-1), t1(1, j)], [t1(2, j-1), t1(2, j-1)], 'red');    plot([t1(1, j-1), t1(1, j)], [t1(2, j), t1(2, j)], 'red');    plot([t1(1, j-1), t1(1, j-1)], [t1(2, j-1), t1(2, j)],'red');    plot([t1(1, j), t1(1, j)], [t1(2, j-1), t1(2, j)], 'red');endhold off