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Circle Hough Transform

Rich Midwinter
Greenhorn

Joined: Jan 06, 2004
Posts: 4
Can anyone show me how to take a BufferedImage in Java (something I've already done previous image processing on, blurring, edge detect, etc) and use a circle Hough Transform to locate the center points of a given number of circles at a set radius?

Once that's done, could anyone explain how to apply it at different given radii and then work out which circles are the 'clearest' from the 'accumulator'(?) table?

Thanks
Dirk Schreckmann
Sheriff

Joined: Dec 10, 2001
Posts: 7023
Rich UK,

Welcome to JavaRanch!

We ain't got many rules 'round these parts, but we do got one. Please change your display name to comply with The JavaRanch Naming Policy.

Is "UK" really your last name? If not, please use something else.

Thanks Pardner! Hope to see you 'round the Ranch!


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Rich Midwinter
Greenhorn

Joined: Jan 06, 2004
Posts: 4
That help?
Ernest Friedman-Hill
author and iconoclast
Marshal

Joined: Jul 08, 2003
Posts: 24187
    
  34

Maybe this would help.


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Rich Midwinter
Greenhorn

Joined: Jan 06, 2004
Posts: 4
Thanks for the reply...

I've had trouble slimming it down to the core parts - things like it uses a MediaTracker which requires a 'component' which seems to mean I need a GUI of some variety to start with.

I'd like to gut the MediaTracker code out anyway because I have a BufferedImage I want to start with, but I can't seem to do that without breaking the code.

It's all designed to be an applet, painting results to the screen, etc... and I just haven't been able to adapt it without breaking it every time!

I have used it to test on my prepared images by first saving them to disk and then using it though - and the results are superb which is really frustrating!
 
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subject: Circle Hough Transform