how can i get the average line width/thickness (in pixels) and No. of turns of a hand-drawn spiral image.

Question

shron ikims 2023-2-13

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1911340-how-can-i-get-the-average-line-width-thickness-in-pixels-and-no-of-turns-of-a-hand-drawn-spiral-i

评论： Image Analyst 2023-2-19

spiral.jpg

Hi,

I am working on a project and a small part of that project is to have an image of a spiral drawn by hand (image attached) and get the average thickness of the spiral trace/line and its no. of turns/loops.

If someone can help me with this I will be really grateful.

Thank You

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

Image Analyst 2023-2-13

1
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1911340-how-can-i-get-the-average-line-width-thickness-in-pixels-and-no-of-turns-of-a-hand-drawn-spiral-i#answer_1170495

I do that in my demo. Basically you get a binary image of your shape. Then you compute it's skeleton and Euclidean Distance Transform. Then multiply those two images to get the width everywhere. Then take the histogram of the image to get the distribution of widths.

Change the demo to use your image and make sure you threshold to get dark blobs instead of light blobs. Let me know if you can't figure it out.

2 个评论
显示无隐藏无

shron ikims 2023-2-17

Thank You @Image Analyst this worked very well, and solved the problem bogging my mind since days.

Image Analyst 2023-2-19

@shron ikims If this Answer solves your question, then could you please click the "Accept this answer" link to award the answerer with "reputation points" for their efforts in helping you? They'd appreciate it. Thanks in advance. 🙂 Note: you can only accept one answer (so pick the best one) but you can click the "Vote" icon for as many Answers as you want. Voting for an answer will also award reputation points.

请先登录，再进行评论。