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Extraction phenological events [message #80389]

Thu, 07 June 2012 10:52

Bandrush Barda
Messages: 6
Registered: June 2012

Junior Member

Dear all?
I’m doing phenological study using threshold method in IDL. I have 36
images with 10 days time interval in 2005
(ENVI format). They all have been stacked. I know how to set threshold
value on a single image. But I don’t know how to set threshold value
on multiband image to determine the date when grown season start and
end. Start of season is determined a day when NDVI value is return to
threshold value in a given year. So what I’d like to ask:
1. How can I set threshold value on multiband image to determine the
date when grown season start and end.
2. What kind of procedure and function should I use to extract start
and end of season using threshold method on multiband image? The dates
when start/end of season occurs are different in every vegetation
types. Basically I want to extract one image showing different places
are different phenological date. Is there anyone who can help me for
this?
Thanks a lot

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[Message index]

		Extraction phenological events By: Bandrush Barda on Thu, 07 June 2012 10:52
		Re: Extraction phenological events By: rogass on Thu, 16 August 2012 08:04
		Re: Extraction phenological events By: Dry in water on Sun, 28 October 2012 07:14
		Re: Extraction phenological events By: saran on Tue, 13 May 2014 01:41
		Re: Extraction phenological events By: saran on Tue, 13 May 2014 01:42

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