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Re: Image analysis and ring identification [message #30271]

Thu, 18 April 2002 08:07

James Kuyper
Messages: 425
Registered: March 2000

Senior Member

Paul Van Delst wrote:

> Rachel Pepper wrote:
>
>> Actually, the rings often have a bright spot that is not in the center of
>> the ring, so I don't think the centroiding technique will work. Do you have
>> any other suggestions?
>
>
> Once you've isolated the region of interest within the ring (the hardest part I reckon), can't
> you just determine the bright spot location by finding it's location via MAX using the image
> intensities?

Yes, but I didn't get the impression that he wants to find the bright
spot. He asked how to determine the center of the circle, and complained
about the fact that the bright spot would mess up the centroid-based
method of calculating the center, because the bright spot was off-center.

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[Message index]

		Re: Image analysis and ring identification By: James Kuyper on Thu, 18 April 2002 08:07
		Re: Image analysis and ring identification By: Paul Van Delst[1] on Thu, 18 April 2002 06:44
		Re: Image analysis and ring identification By: David Fanning on Thu, 18 April 2002 06:05
		Re: Image analysis and ring identification By: Paul Van Delst[1] on Thu, 18 April 2002 05:37
		Re: Image analysis and ring identification By: Rachel Pepper on Wed, 17 April 2002 21:21
		Re: Image analysis and ring identification By: David Fanning on Wed, 17 April 2002 07:29
		Re: Image analysis and ring identification By: Dan Larson on Thu, 18 April 2002 08:37
		Re: Image analysis and ring identification By: David Fanning on Thu, 18 April 2002 08:33

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