Tell me more ×
Cross Validated is a question and answer site for statisticians, data analysts, data miners and data visualization experts. It's 100% free, no registration required.
up vote 4 down vote favorite

An hyperspectral image is a multidimensional image with more than 200 spectral bands i.e. an image for which each pixel is a vector of dimension 200 (most often it is a sampled spectral curve that is encoutered in satellite imagery or medical imagery).

What are the implemented package (I am especially interested in R packages but if other free algorithms exist, I will try them) for frontier detection and (unsupervised) segmentation of this type of images?

share|improve this question

4 Answers

up vote 3 down vote accepted

I am afraid there is no; during my little adventure with such data we have just converted it to a data frame form, added some extra attributes made from neighborhoods of pixels and used standard methods. Still, packages ripa and hyperSpec might be useful.
For other software, I've got an impression that most of sensible applications are commercial.

share|improve this answer
thanks a lot for this answer! – robin girard Jul 27 '10 at 11:04
You're welcome. – mbq♦ Jul 27 '10 at 11:16
up vote 4 down vote

Not an R package, but D. A. Landgrebe from Purdue (author of Signal theory methods in multispectral remote sensing) has sponsored the MultiSpec freeware. Its a rather clunky GUI but gets the job done for most of the common hyperspectral algorithms.

share|improve this answer
interesting ! there are testing images to try it, exercices to learn how to use it... – robin girard Oct 5 '10 at 13:16
up vote 3 down vote

The best place to look for free/open source capabilities of this nature is GRASS GIS. The image processing manual is at http://grass.fbk.eu/gdp/imagery/grass4_image_processing.pdf . Because this is constantly undergoing development, it would be worthwhile posting an inquiry on one of the GRASS user lists (found through links on the home page at http://grass.fbk.eu/ ).

share|improve this answer
Thanks a lot for the answer, I'll do the inquiry when I'll have more time – robin girard Sep 27 '10 at 4:56
We have also a dedicated Wiki page at grass.osgeo.org/wiki/R_statistics – markusN Dec 5 '10 at 16:47
up vote 1 down vote

This is a very late response, so this may no longer be of interest, but I am working on putting together an R library with various hyperspectral image processing capabilities. At the moment my focus has been on endmember detection and unmixing. If this is still something which is of interest please let me know. My hope is to publish a beta version to CRAN or R-Forge in the near future but I would be happy to send out the code itself.

Best, Dan

share|improve this answer
Hi Dan, Good initiative, I'll try to contact you. – robin girard Jan 25 '11 at 21:07
Has anything come of this/will come of this? I'm much interested... – cbeleites Oct 9 '12 at 14:27

Your Answer

 
discard

By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.