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Orthorectification Step by Step
By Daniela_06,
Hello everyone,
I am going crazy with this orthorectification procedure. This is what i have. I have several satellite images TM and ETM+ from different years that i need to classify and the perform change detection techniques.
This images are 30m resolution. UTM Zone 30N WGS1984.
I also have gather 2 DEM 1 arc sec (approx 30m ) UTM WGS1984. I need to do a mosaic of this two DEM because together cover the area of each satellite images. But not exactly. This to DEMS together are only a portio
Classification in ENVI
By Daniela_06,
Hello,
I am doing an unsupervised classification using ENVI. I have an ETM+ 1992 image already orthorectified and I have mask the study are of interest (administration boundary). Anyway when I perform an unsup classification the background is being classified. How to eliminate the black background of all the imageS?
regarding landuse
By adnan0001,
hi friend's ....
i have done my landuse / land cover map using erdas(supervised classification)
i want to give colour for different classes..
plz see the attach document..i want to fill the colour like this ..plz help in finding the solution
https://www.dropbox.com/s/r2tng0qvkke929m/landusecover.doc
thanks
regarding gis
By adnan0001,
plz any1 clear me..in gis in detail or any material
different types of geographic phenomena...?
classification of analytic gis capabilities...?
visualization process and stategies..?
spatial data and geoinformation..?
How to do a vegetation classification
By Daniela_06,
Hello everyone.
I am doing a classification for 2 different dates 2002 and 2012.
For the year 2002 I have a shapefile with polygons that show the classes (16) in total, using ERDAS and ENVI I was able to turn those polygons into training sites a do a proper classification. For the year 2012 I have no shapefile nor ground thruthing information and I am going to do a visual analysis of the 2002 classification map to create signatures for the 2012.
Now. I need to asses the deforestation of the
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