[RS-ecology] removing images with poor signal-to-noise ratio

[Benjamin Leutner]

yes you are on the right track. The classic way to do that is the 
maximum noise fraction transformation (MNF), which consists basically of 
two chained PCAs:

Green et al (1988) A transformation for ordering multispectral data in 
terms of image quality with implications for noise removal. IEEE 
Transactions on Geoscience and Remote Sensing

Unfortunately I'm not aware of a free, readily usable implementation. 
Orfeo toolbox is close, but does not yet provide a packaged command to 
do it.
 From proprietary software, I remember that ENVI had a MNF function.


On 02.03.2017 19:29, Natalia Quinteros wrote:
> Hi list,
>
> I'm working with hyperspectral images and I need to get rid of the 
> bands with poor signal-to-noise ratio. I was wondering if somebody 
> have done that and if you could give me some advise. I'm looking at a 
> paper right now that does that for multispectral images using PCAs.
>
> Thanks
>
> Natalia
>
>
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-- 
Benjamin Leutner M.Sc.
PhD candidate

Department of Remote Sensing
University of Wuerzburg
Campus Hubland Nord 86
97074 Wuerzburg, Germany

Tel: +49-(0)931-31 89594
Email: benjamin.leutner at uni-wuerzburg.de
Web: http://www.fernerkundung.uni-wuerzburg.de

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