detect boundary in image which is not a perfect circle

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Ayush 2016-11-3

评论： Mostafa 2016-11-3

i am trying to detect a vehicle tyre

my sample image is

i am using CircularHough_Grd func. it is detecting the inner rim perfectly. as shown below

but it cannot detect the outer portion as it is not perfectly circular, any suggestions.

Mostafa 2016-11-3

Starting from the second image, I think you can apply some filters to remove the background and then proceed with the edge detecting from there.

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