detect and fit curved lines in an image

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Eric Franck 2012-12-8

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https://ww2.mathworks.cn/matlabcentral/answers/56063-detect-and-fit-curved-lines-in-an-image

评论： sheeha66 2015-3-26

I'm working on a project that includes lane detection and tracking; I'm able to detect straight lines in image using HT; I'd like to know how to accurately detect and fit curved lines in an image. Thanks folks

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sheeha66 2015-3-26

Hi eric.My project is exactly like you but im using the b-snake rather than HT.Can I know how you removed the unwanted background such as trees and shadows from the road? What is suitable technique that you use ? I really hope for your reply.Tq

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Answer 1

Image Analyst 2012-12-11

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If you have the coordinates of the pixels, you could use polyfit to fit them to a polynomial.

See articles on road following: Vision Bib

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Image Analyst 2012-12-11

Well, maybe use the algorithm J recommended above or pick one from the exhaustive list I gave in Vision Bib. Or start simply with an edge detection routine, like the edge() function in MATLAB. Of course getting those coordinates is required before fitting to a curve can be done - you have to have something to fit to.

Image Analyst 2013-2-15

See info here: http://www.mathworks.com/matlabcentral/answers/63308#answer_74911

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Answer 2

Jürgen 2012-12-8

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Hi,

Hough Transform can also be used for detecting curves:http://faculty.washington.edu/cfolson/papers/pdf/cviu99.pdf

regards,J

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Eric Franck 2012-12-11

Thanks a lot for your quick reply J, I've read the paper but frankly speaking it's been kinda difficult for me to derive a working code based on that paper within these days. Can u direct me to a working code for curve fitting? not necessarily based on HT of course. the ones I hv can only detect straight lines and no curves!

regards!

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