How should I remove noise from the image which is marked in red color except the crack lines?
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clc;
clear;
close all;
%%step 1
image = imread('D:/canal images/crack.jpg');
%image = imread('C:/Users/Jainee/Documents/MATLAB/frame60.jpg');
figure
imshow(image);
%%step 2
gray = rgb2gray(image);
imshow(gray);
title('Gray Scale');
%%step 3
croped = imcrop(gray);
figure
imshow(croped);
title('Croped Image');
%%step 4
sharpen = imsharpen(croped,'Amount',3);
figure
imshow(sharpen);
title('Sharped Image');
%%step 5
se = strel('Line',100,90); %%create a disk-shaped structring element
% bothat = imsubtract(imadd(sharpen,imtophat(sharpen,se)),imbothat(sharpen,se)); %%applying bottom hat method
bothat=imbothat(sharpen,se);
figure
imshow(bothat);
title('Bottom Hat Method');
%%step 6
level = graythresh(bothat); %%return gary level of image
BW = im2bw(bothat,level); %%convert into binary
figure
imshow(BW);
title('Binary Image');
%%step 7
% % s1=size(BW);
% % for i=1:s1(1)
% % for j=1:s1(2)
% % bw6(i,j)=1-BW(i,j);
% % end
% % end
% % figure;
% % imshow(bw6);
% bw6= BW
bw5 = bwareaopen(BW,80,8);
figure
imshow(bw5)
%%title('Size range: 20-50 pixels')
bwt5=BW-bw5;
figure
imshow(bwt5);
se2=strel('disk',2);
%
bw6=imclose(bwt5,se2);
% bw16 = imerode(bw6,se2);
figure
imshow(bw6);
bw18=bw6;
si = size(croped);
for i=1:si(1)
for j=1:si(2)
if(bw18(i,j)==1)
new_image(i,j,1)=255;
new_image(i,j,2)=0;
new_image(i,j,3)=0;
else
new_image(i,j,:)=croped(i,j,:);
end
end
end
figure
imshow(new_image);
2 个评论
John D'Errico
2018-2-20
Please learn to format your code readably next time. I fixed it for you here.
When you paste in the code, select it as a block, then click on the "{} Code" button above the edit window. Your code will now be formatted as code, instead of an unreadable mess.
回答(1 个)
Image Analyst
2018-2-21
I'd use regionfill() to fill in the red regions with the surrounding perimeter, kind of like it's smeared inward.
0 个评论
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