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.
5
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62 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 ...
4
votes
0answers
150 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?
3
votes
0answers
78 views
How to merge SeaWiFS and MODIS data or use other merged products?
I hope to produce a time-series for sea surface temperature (SST) and chlorophyll-a (Chl-a) for use in MaxEnt without the use of arcgis, preferring Python tools to others. I am new to satellite data ...
3
votes
0answers
27 views
How can I display GeoEye1 imagery in colour in Opticks?
Anyone familiar with the use of the open-source remote sensing software Opticks? Im new to opticks, I load GeoEye1 imagery but it displayed as greyscale. It supposed to be displayed as bands ...
2
votes
0answers
39 views
Best source for high-resolution satellite images free/low-cost?
I am doing a household survey in Kenya, and I need to ensure that my survey team visits every house within a given area. I've been going to google maps and right-clicking on roofs to get coordinates ...
2
votes
0answers
34 views
Using Quickbird to discriminate vegetation response and spectral signatures - which season?
I have a study area in N. Florida loblolly pine plantation with 3 treatments (drought, fertilization, drought+fertilization, control) and 4 replicate plots. All plots will be in the same scene. These ...
1
vote
0answers
49 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.
1
vote
0answers
50 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 ...
1
vote
0answers
59 views
How to open files in OpenEV from command line with an LUT pre-applied?
In OpenEV, how can I load multiple files from the command line with an LUT pre-applied (a phase color ramp, specifically), rather than having to go in and apply it manually to each file? Is there ...
0
votes
0answers
9 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 ...
0
votes
0answers
58 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 .
0
votes
0answers
68 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
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votes
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35 views
How to perform Neural Network Classification?
I'm using ENVI 4.8.There are some problems on parameters for Neural Network in Envi.(Envi-Classification-Supervised-Neural net)
There are 5 bands and 12 classes that i have used for my study .
The ...
