Interpolate Missing data and make line smooth

Question

Alina tom 2018-7-12

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/410105-interpolate-missing-data-and-make-line-smooth

回答： jonas 2018-7-12

test.zip

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

0 个评论
显示 -2更早的评论隐藏 -2更早的评论

请先登录，再进行评论。

请先登录，再回答此问题。

Answer 1

jonas 2018-7-12

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/410105-interpolate-missing-data-and-make-line-smooth#answer_328638

在 MATLAB Online 中打开

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')