2
votes
1answer
44 views

Image classification using google satellite images

Currently our expert user classifies locations by viewing the Google earth satellite image of a location. They consider circular areas of a 5km radius at a set zoom level. They evaluate the image for ...
2
votes
1answer
145 views

Failed to create signature file

I need some help, because I've no clue how solve this issue the exercise that I'm trying to perform. The point where I'm stuck is 4. "Create signature file as LandsatCompS.sgs". I've done what it ...
3
votes
1answer
47 views

Sample classification datasets?

I was looking for some publicly available ground data classification datasets, specifically, locations in e.g. latitude/longitude with a description of the land cover/land use, and a reference e.g. ...
0
votes
0answers
140 views

Atmospheric correction for RapideEye without atmospheric parameters

I'd like to perform an atmospheric correction of my RapidEye images but metadata do no include atmospheric parameters required to use the 6s algo implemented in the Orfeo ToolBox. Is there a solution ...
1
vote
0answers
236 views

Question related with NDVI value on water

There is a surreal thing on my NDVI images. NDVI values on lake is ranging from -0.04 to 0.7. (The lake surrounded by forest and has freshwater). Theoretically, negative value of NDVI is correspond to ...
3
votes
1answer
257 views

Questions regarding the processing of mosaic Landsat 8

Approximate Translation of Original Question: A question of theoretical and practical about the mosaic of satellite images. I have 3 different months of Landsat images, which need to accomplish the ...
2
votes
0answers
133 views

ENVISAT ASAR .N1 file is not being opened by ERDAS IMAGINE 2011

I am not able to open ENVISAT ASAR .N1 file in ERDAS IMAGINE 2011. The software has direct read option for files of this format. Whenever I try to open the file, software closes automatically giving ...
1
vote
0answers
171 views

How to mask clouds in ER Mapper?

I am using ER Mapper. But, I'm still confused how to detect and mask the clouds. I want to reduce or eliminate the cloud to perform supervised and unsupervised classification.
2
votes
2answers
1k views

How to determine soil moisture index values from reflectance values in a satellite image?

I'm working on determination of soil moisture by remote sensing. I would like to know how we can determine soil moisture index values from reflectance values in LANDSAT TM images.