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Re: Technique to find maximum in 100x100 element moving box [message #93755 is a reply to message #93752]

Wed, 12 October 2016 14:38

lecacheux.alain
Messages: 325
Registered: January 2008

Senior Member

Le mercredi 12 octobre 2016 23:23:22 UTC+2, Samantha Tushaus a écrit :
> I have a 3200x3248 array (satellite swath), and I would like to find the maximum value in a 100x100 element moving box. It's exactly like using smooth or convol to find the mean in a 100x100 element moving box, but I need the max. Right now I have it hard-coded with FOR loops to take into account the edges, but it's veeeeery slow.
>
> Does anyone have any advice on how to speed this up using IDL functions (rebin, histogram, anything of that sort)?
>
> Thanks for your time!

max_array = dilate(your_array, replicate(1,100,100), /GRAY) ?

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[Message index]

		Technique to find maximum in 100x100 element moving box By: sam.tushaus on Wed, 12 October 2016 14:23
		Re: Technique to find maximum in 100x100 element moving box By: sam.tushaus on Wed, 12 October 2016 14:26
		Re: Technique to find maximum in 100x100 element moving box By: Markus Schmassmann on Thu, 13 October 2016 03:36
		Re: Technique to find maximum in 100x100 element moving box By: lecacheux.alain on Wed, 12 October 2016 14:38
		Re: Technique to find maximum in 100x100 element moving box By: sam.tushaus on Thu, 13 October 2016 08:02
		Re: Technique to find maximum in 100x100 element moving box By: Lajos Foldy on Thu, 13 October 2016 10:01
		Re: Technique to find maximum in 100x100 element moving box By: Lajos Foldy on Thu, 13 October 2016 10:58
		Re: Technique to find maximum in 100x100 element moving box By: Lajos Foldy on Thu, 13 October 2016 11:56
		Re: Technique to find maximum in 100x100 element moving box By: Heinz Stege on Thu, 13 October 2016 14:59
		Re: Technique to find maximum in 100x100 element moving box By: Heinz Stege on Fri, 14 October 2016 10:25
		Re: Technique to find maximum in 100x100 element moving box By: wlandsman on Sat, 15 October 2016 16:23
		Re: Technique to find maximum in 100x100 element moving box By: wlandsman on Sat, 15 October 2016 16:32
		Re: Technique to find maximum in 100x100 element moving box By: sam.tushaus on Fri, 28 October 2016 11:49

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