How to detect the edge in following image?
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How would I detect the edge drew in the picture below ? First I tried to remove noises using the median filter on the image. Then I averaged the values from row 220 to 225 to remove the artifact in the middle of the image. Then, I tried to use the edge function but it does not work. I am just not able to detect the edge I drew in the attached image. How would one do this? Also attached to this post is the first and second half of the image shown in the picture. I would appreciate any help!
What I have tried so far:
load("image.mat", "image");
for r = 220:225
for c = 1:14824
image(r,c) = (image(219,c) + image(226,c))/2;
end
end
filteredImage = medfilt2(image(:, 1:14824), [6,6]);
imagesc(filteredImage);
colormap("gray");
BW = edge(filteredImage, "sobel",[]);
BW = bwareaopen(BW, 20, 4);
regionOfInterest = BW(200:350, :);
[rows, columns] = find(regionOfInterest);
[C, ia] = unique(columns);
rows = rows(ia) + 200;
e = fit(C,rows, "linearinterp");
hold on;
plot(e, C, rows);
and the result
9 个评论
Image Analyst
2022-7-4
Trial and error. Or you could put into a nested for loop to try all combinations and see which works best.
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