Line detection in an image!!

I want to the line to be a single line that when i use it further it wont detect the boundaries.

im = rgb2gray(imread('white_3.jpg'));
H = fspecial('Gaussian',[2 2],15);
im = imfilter(im,H);
imshow(im);title('Original image'); 
sim = edge(im, 'sobel');
se = strel('disk', 2);
sim = imdilate(sim, se);
sim = bwareaopen(sim, 50);
sim = imerode(sim, se);

figure,imshow(sim);title('after Sobel');
 %h = waitbar(0,'Sewing....');

[B,L] = bwboundaries(sim,'noholes');
imshow(label2rgb(L, @white, [1.5 .5 .5]))
% imwrite(L,'new.jpg')
hold on
for k = 1:length(B)
   boundary = B{k};
   h1=plot(boundary(:,2), boundary(:,1), 'w', 'LineWidth',0.05)
          %waitbar((.5+(k/length(B))/2),h);

end
i want this to be a single line of size 0.15 with no boundaries.

Answer 1

[JESUS DAVID ARIZA ROYETH]

imo = rgb2gray(imread('white_3.jpg'));
se = strel('line',17,5);
sim = imdilate(imo, se);
se2 = strel('disk', 1);
sim = imdilate(sim, se2);
sim = bwareaopen(sim,350);
sim=bwmorph(sim, 'skel', inf);
figure
imshow(sim)

Answer 2

[gyssell dayanna contreras rodriguez]

how to design a program that finds the number of times that the vowels present in the full name (or any sentence) that the user provides are repeated. The output should be in the form of character or string arrangement. can you pliss help me