Edges of narrow objects in image

Question

parinaz nazeri 2020-1-24

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https://ww2.mathworks.cn/matlabcentral/answers/501874-edges-of-narrow-objects-in-image

回答： parinaz nazeri 2020-1-27

Hi everyone,

I have the following image and when I look at the boundaries, soem part of two boundaries are o ntop of each other. How can I make sure the boundaries of a narrow object (containing maybe one pixel) is coorectly detected?

thank you,

Parinaz

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Turlough Hughes 2020-1-24

编辑：Turlough Hughes 2020-1-24

Can you attach the original image using the paperclip button for attachments, and provide code you used to generate the binary image to the right.

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Answer 1

parinaz nazeri 2020-1-27

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https://ww2.mathworks.cn/matlabcentral/answers/501874-edges-of-narrow-objects-in-image#answer_412222

I resized the image 3 times and use bwboundaries to find its boundaries, then for the boundaries of the real image, I found the closest integer to points of the resized boundaries divided by 3.