How do I convert a race track image file into X,Y coordinates?

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Nikhil Dhawan
Nikhil Dhawan 2017-1-23
评论： Walter Roberson 2022-9-27
After importing a race track image into MATLAB, I need to convert the image into a set of X,Y coordinates for lap simulation.

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回答（2 个）

Walter Roberson
Walter Roberson 2017-1-23
Probably: threshold and find(). Or perhaps threshold and one of the two boundary tracing routines.
Christoph Hahn
Christoph Hahn 2017-2-14
Hi Nikhil,
please consider uploading an image to be able to provide better support.
Assuming that you are working with binary images (binary -> black-white; if not, please consider converting) that may be a quite straightforward task. I suggest you have a look into the function list of image processing toolbox. What about 'edge'- and 'bwboundaries'-function.
Again, please consider providing an actual image to allow for better support.
Cheers Christoph
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Demi Milet
Demi Milet 2022-9-27
Can u maybe explain this code? im trying to use this for an image of a track of my own, but i get an error.
Walter Roberson
Walter Roberson 2022-9-27
What error do you get? You would get an error in the plot in trying to use B{3} if you do not have something equivalent to the small island at the bottom right where the checkered flag is.

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