Questions tagged [hyperspectral-sensor]

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6s atmospheric correction for hyper spectral data

I am trying to customize atmospheric correction for hyper-spectral data. Presently for Landsat I am using the i.atcorr GRASS GIS module. I want to know whether 6S atmospheric correction can be used ...
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124 views

When to rescale reflectance data to calculate vegetation indices

I'm attempting to calculate a number of vegetation indices using hyperspectral AVIRIS data in ENVI. Some of these indices are normalized, such as NDVI, whereas others are not, such as the Transformed ...
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2answers
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ENVI band math incorrect values

I'm attempting to calculate vegetation indices in ENVI 5.2 using level-2 AVIRIS data in band math. The indices I'm working with are Vogelmann Red Edge 2, normalized difference red edge, and red edge ...
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71 views

How to convert large size hyperspectral from tif to lan

I tried to convert hyperspectral from .tif to .lan format. There are three file with size about 1.5GB , 750MB and 200MB respectively. I use this code from osgeo import gdal src_fname = 'file.tif' ...
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0answers
60 views

Google Cloud Image exporting blurry and small tiff images

I'm trying to export a image from GEE. For some reason, I'm getting a very small image size that is only 21x30 in dimensions. I'm trying to read it in Python and QGIS. Same problem in both platforms ...
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72 views

Area under the spectral curve?

There is an existing similar question here that I have tried but didn't give me what I need. I have an image with 20 spectral bands. How do I compute the area under the spectral curve that is ...
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0answers
50 views

white image while Trying to mosiac two hyperspectral data in ENVI

I am trying to mosaic two aviris-ng georefrenced hyoerspectral data but one of them become white in preview. so I am not able to mosaic the image.enter link description here error ink
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0answers
442 views

Database of labeled hyperspectral imagery

Are there any datasets of hyperspectral imagery that can be used for AI training and classification, comparable to ImageNet? The Universitat de Valencia has one listed on their site, HyperLabelMe, but ...
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200 views

How to seperate class labels of hyperspectral images using R?

The image has different classes and different band, where the 220 bands are separated by the following code library(RStoolbox) library(raster) library(rgdal) library(caret) library(...
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129 views

Software for matching spectral end members with spectral library

I am working with Moon Mineralogy mapper(M3) - hyper-spectral data and i am trying to match the endmembers obtained from M3 with RELAB spectral library. I have tried spectral analyst tool in ENVI but ...
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15 views

How to interpret Orfeo-Toolbox Hyperspectral Unmixing results and calculate percentage of endmember abundance?

I understand that using the Hyperspectral Unmixing Tool in the Orfeo-Toolbox gives me the abundance matrix of the endmembers in a given pixel, what I want to do is to calculate the percentage each ...
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22 views

How to orthorectify pushbroom pixel locations with position and orientation data?

I'm trying to orthorectify/georectify data obtained from a hyperspectral line scanner via a UAV in Python. My system has both an RTK for highly accurate position data (long, lat), altitude readings (...
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9 views

Opened image appears corrupted

I have a hyperspectral image that I am fusing with a multispectral image (of the same scene) on Matlab. I also have a reference image of the final result in order to be able to compare and evaluate ...
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39 views

Is it possible to download the raw data (in .csv form) for EO-1 Hyperion via the Descartes Labs Platform?

I'd like to import it into a Python file to work with it. Also, for EO-1 Hyperion, since I believe its relatively newly uploaded data, will I need to "clean" the data myself?
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19 views

Where to find open tabular hyperspectral data for machine learning research?

Where can i find open datasets regarding " Wheat/Maize Leaf Spectra with Associated water content, Potassium and Nitrogen Measurements" for machine learning research i.e. hyperspectral ...
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33 views

Extracting hyperspectral pixel values to shapefile?

I have developed a workflow for a question that might have an easier answer. Say you have a hyperspectral image and a set of polygons overlapping the image. I want to extract all pixel values that ...
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1answer
34 views

FLAASH produces weird peaks

I am applying FLAASH to atmospherically correct and convert to reflectance a hyperspectral image acquired by our airborne system. The problem is that FLAASH (using ENVI) outputs an image where all ...