Collecting and interpreting information about the environment and the surface of the earth from a distance, primarily by sensing radiation that is naturally emitted or reflected by the earth's surface or from the atmosphere, or by sensing signals transmitted from a device and reflected back to it.
3
votes
1answer
59 views
How do I deal with tiles in the Orfeo Toolbox segmentation?
I'm using the Orfeo Toolbox for segementation of large Very High Resolution Satellite images. It performs very well and i'm mostly very happy with it. But I still get some weird/bad results that I ...
0
votes
0answers
29 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.
0
votes
1answer
28 views
How to import HDF (L1G) files in to Erdas or ArcGIS?
I have downloaded satellite imagery from GLCF website, it has downloaded with .L1G file extension, I am not able to open this file in ArcGIS as well in Erdas, so please let me know how to open this.
1
vote
0answers
41 views
Averaging satellite data with missing values (using Python)
I am using sea surface temperature, chlorophyll, and other data parameters as covariants in a model, and I would like to average them over a particular time period.
I am currently doing this using a ...
0
votes
0answers
50 views
Principal Component Analysis in QGIS
How do I go about to perform a band ratio and Principal Component analysis in QGIS? I need to derive principal components from ratios of landsat TM bands .
5
votes
0answers
54 views
How to produce a vegetation stress map utilizing the spectral blue shift of the red edge?
I am interested in mapping vegetation stress utilizing the blue shift to the red edge phenomenon in remote sensing. The figure below shows the expected change in reflectance of green leaves under ...
3
votes
2answers
67 views
Tasseled Cap Transformation Rapid Eye
I want to do tasseled cap transformation on rapid eye data. the main question would be about the parameters which are used. Somebody has a suggestion?
0
votes
0answers
12 views
How to create symbology? [duplicate]
Please suggest how to create symbology in QGIS? As I am Infrastructure layer with the help of QGIS and I want to represent different roads with different colors and widths but right now I am unable to ...
0
votes
1answer
57 views
What are these Google Maps glowing spots? [duplicate]
Can any help me by identifying these glowing spots on the google maps image below? Am I in danger(I live nearby)?
Google Maps Link
1
vote
0answers
56 views
Is any way to automate valley flood from raster image?
I have a raster image with high resolution. My challenge is, how to automate extract valley floods from the image, like this
2
votes
2answers
80 views
Is there a source for leaf-off aerial imagery?
I am looking for leaf-off imagery for Oklahoma, Kansas and Texas. 1m leaf-off imagery would be ideal, although any substitute would be helpful. I need fairly high resolution imagery to distinguish ...
1
vote
2answers
67 views
How to detect burned areas from Landsat or MODIS datasets using ILWIS?
I'm trying to find a simple tutorial on how to detect and map burned areas from/with ILWIS . I use Landsat 5/7 or MODIS for detection.
Any idea?
0
votes
2answers
68 views
Mysterious Problems with .IGE file
I'm trying to manipulate an .IGE file, which I understand is a raster data format developed by Erdas Imagine. The data I've downloaded is the National Land Cover Database (NLCD) 2006 Percent Developed ...
2
votes
2answers
58 views
Searching for LANDSAT for the state of New Mexico
I am looking for a website that allows me to download free LANDSAT for all of the State of New Mexico. I need them to perform my work on RUSLE and need LANDSAT for c factor.
Does anyone suggest of a ...
4
votes
0answers
132 views
What GIS applications use Google Glass?
From techcrunch.
I see a lot of press coverage about Google Glass, yet I haven't seen details of GIS apps that use it.
What GIS applications use Google Glass?
