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enter image description here

In this image I need to detect the vehicle rims and measure the pixel length of the rims via image processing. I think I should follow the circular Hough Transform for circles. can you guys please advice me which steps to follow to acquire the width of the rims? ex(gray scale->edge detection, or any other comment on this )

Visuddha Karunaratne
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    Hough transform is a good option for this task. Before that, you need to tranform your image in gray levels and perform a edge detection. But what is your question? How to do those operations? – Simon Bergot Oct 20 '11 at 08:56
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    My advice on which steps you should follow: 1) Google/Wikipedia color to grayscale conversion. 2) Google/Wikipedia edge detection. 3) Google/Wikipedia Hough Circle Transform. 4) Actually **try** to perform steps 1-3 in code, by yourself. 5) Come back here and ask a concrete question -- currently, it sounds like you just want someone to do your hard work for you. – mpenkov Oct 20 '11 at 09:50
  • thanx for the answer, yeah you kind of right! i will eork on my skills . thank you again. – Visuddha Karunaratne Oct 20 '11 at 20:28

1 Answers1

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Here is how I would do this in Mathematica:

enter image description here

Here you have a direct measurement, off by 1 Pixel.

enter image description here

Edit

Here you have it applied to your other question

Question: what are my research areas for image processing project?

enter image description here

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Dr. belisarius
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