Length of the curve in the image

Question

mustafa alnasser 2014-2-2

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/114572-length-of-the-curve-in-the-image

回答： Hogan 2023-4-28

采纳的回答： Walter Roberson

Dear All;

I have curve with random shape , i want to measure it length in the image , is there any way to do it

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Answer 1

Walter Roberson 2014-2-2

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https://ww2.mathworks.cn/matlabcentral/answers/114572-length-of-the-curve-in-the-image#answer_123013

http://www.mathworks.com/help/images/ref/bwdistgeodesic.html Let the mask be true only at the "end" of the curve, seed only at the "beginning" of the curve, BW is the curve, then the geodesic would be the shortest "distance" through the curve to get to the end.

http://www.mathworks.com/help/images/ref/bwtraceboundary.html and take number of rows in returned matrix