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Re: Edge detection for saturn's rings [message #61343 is a reply to message #61342]

Mon, 14 July 2008 18:06

ben.bighair
Messages: 221
Registered: April 2007

Senior Member

On Jul 14, 8:52 pm, David Fanning <n...@dfanning.com> wrote:
> frankosuna writes:
>> I've been trying to use some of the built in edge detection routines
>> implemented in idl such as sobel but I haven't found a very good one
>> that will work for images such as this:
>
>> http://frankosuna.googlepages.com/supportImage.jpg
>
>> I am trying to pull out all of the rings in this image and the best I
>> have gotten is this:
>
>> http://frankosuna.googlepages.com/edgeDetect.jpg
>
>> Any suggestions and opinions are welcome.
>
> Wow. You have admirably high expectations! I would've
> been thrilled with those results. :-)
>

Me, too! But, Frank, the images are two different sizes - is the
color one really the source for the edge image? If so, how did you
convert to greyscale? Did you do any steps other than Sobel?

CHeers,
Ben

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[Message index]

		Re: Edge detection for saturn's rings By: frankosuna on Mon, 14 July 2008 18:57
		Re: Edge detection for saturn's rings By: David Fanning on Mon, 14 July 2008 18:45
		Re: Edge detection for saturn's rings By: frankosuna on Mon, 14 July 2008 18:41
		Re: Edge detection for saturn's rings By: ben.bighair on Mon, 14 July 2008 18:06
		Re: Edge detection for saturn's rings By: David Fanning on Mon, 14 July 2008 17:52

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