Hi, I am trying to extract out 2 line of number plate but I'm not sure how?

Here is my code:

    clc
    close all;
    clear;
    load imgfildata;

    [file,path]=uigetfile({'*.jpg;*.bmp;*.png;*.tif;*.jpeg'},'Choose an image');
    s=[path,file];
    picture=imread(s);
    [~,cc]=size(picture);
    picture=imresize(picture,[300 500]);

    if size(picture,3)==3
      picture=rgb2gray(picture);
    end
    se=strel('rectangle',[5,5]);
    a=imerode(picture,se);
    figure,imshow(a);
    b=imdilate(a,se);
    threshold = graythresh(picture);
    picture =~im2bw(picture,threshold);
    percentageBlack = (1-nnz(picture)/numel(picture))*100
    picture = bwareaopen(picture,50);
    if (percentageBlack < 50)
        picture = imcomplement(picture);
    end 
    [L,Ne]=bwlabel(picture);
    propied=regionprops(L,'BoundingBox');
    hold on
    pause(1)
    for n=1:size(propied,1)
      rectangle('Position',propied(n).BoundingBox,'EdgeColor','g','LineWidth',1)
    end
    hold off

    figure
    final_output=[];
    t=[];
    for n=1:Ne
      [r,c] = find(L==n);
      n1=picture(min(r):max(r),min(c):max(c));
      n1=imresize(n1,[42,24]);
      imshow(n1)
      pause(0.2)
      x=[ ];

    totalLetters=size(imgfile,2);

     for k=1:totalLetters

        y=corr2(imgfile{1,k},n1);
        x=[x y];

     end
     t=[t max(x)];
     if max(x)>.45
     z=find(x==max(x));
     out=cell2mat(imgfile(2,z));

    final_output=[final_output out];
    end
    end

    file = fopen('number_Plate.txt', 'wt');
        fprintf(file,'%s\n',final_output);
        fclose(file);                     
        winopen('number_Plate.txt')