Interpolate Missing data and make line smooth

Hi all

I have multiple images. each image has a line, I want to interpolate the missing value in the line and make the line smooth . and also auto correct the next pixel of line if it has the next point out of order. some images are attached

this is my input image

the output is like that

Answer 1

[jonas]

Try this.

GRAY=imread('204.jpg');
threshold = graythresh(GRAY);
BW = im2bw(GRAY, threshold);
%%Find Coordinates of images and smooth
[y,x]=find(BW==1);
win=15;
y=smooth(x,y,win);

%%interpolate
[x, index] = unique(x);
xq=1:256
yq = interp1(x, y2(index), xq,'linear','extrap');

%%Create figure from plot
out=zeros(size(BW));
out(sub2ind(size(GRAY),round(yq'),xq'))=1;

%%Plot
figure;
subplot(1,2,1)
imshow(out);
title('new')
subplot(1,2,2)
imshow(GRAY);
title('original')