A remote sensing and image analysis software package produced by Exelis Visual Information Solutions (Exelis VIS).

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2
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2answers
112 views

ENVI to map composition

I'd like to print out 6 images in a single page. How can I do this using map composition tools in ENVI (6 images are year-to-year dynamic images with the same size and the same geo-referencing)? ...
0
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2answers
36 views

Matching Landsat 8 with previous Landsat images

I am working with Landsat 8 in ENVI. My image's dimension is 8921 x 13131. I need to apply forest mask to this image which dimension is 8805 x 12321. I try to resize an image, but it doesn't work. ...
6
votes
1answer
167 views

Phenological event extraction in IDL

I’m doing phenological study using a threshold method in IDL. I have a twelve-band image in 2005 (format is in .tiff not ENVI format). Twelve-band means that monthly images (Jan to Dec) have been ...
3
votes
1answer
53 views

Applying pixel reliability mask to time series MOD13Q1

I am working with a 23-band GEOTiff in which each band is a 16-day MVC MODIS NDVI image. The MODIS .hdfs include a "pixel reliability" image with the following values: [-1]: Fill/No Data-Not ...
1
vote
1answer
44 views

How can I change the highest and lowest value of image?

I want to change the highest and the lowest value of raster image. I want it to have the highest value of 345 and the lowest of 0. The highest value of original image now is 265 and the lowest is ...
0
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1answer
43 views

How can I choose values from stacked raster images according to location of ROI

Before I choosed ROI on land surface temperature (LST) images and obtained pixel values of LST. Now I need pixel value of another images which are stacked multi-band image. My main purpose is to ...
2
votes
0answers
28 views

“Back calculating” to quantify the “atmospheric effect” of water vapor or other gases in a “corrected” hyperspectral image using QUAC?

I know that when using FLAASH in ENVI, you can produce a water vapor map (caveats considered) from your atmospheric correction. My question is if it is possible to "back-calculate" a water vapor map ...
2
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0answers
264 views

Enhanced vegetation index using ENVI 4.7 bandmath

I computed Enhanced Vegetation Index using band math in ENVI 4.7 software. The expression used was: 2.5*((float(b1)- float(b2))/(float(b1)+ (6*float(b2)) +(7.5* float(b3)))) BYTSCL(float(b1), min = ...
2
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0answers
105 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
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0answers
72 views

How to convert MODIS (Vegetation Continuous Fields - MOD44B) to (.img and hdr) in ENVI

Please can anyone help me to convert MODIS (Vegetation Continuous Fields) to (.img and hdr) formats? In ENVI, anytime i try using the MODIS conversion toolkit, a dialog box appears telling me to ...
0
votes
0answers
12 views

Raster vs. Raster Scatter Plot in ArcGIS

I created two raster datasets from the same world view 2 image. One dataset is NDVI, the other is a normalized surface water index (NDSWI). I would like to create a scatter plot for a pixel by pixel ...
0
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0answers
30 views

Python Error in recognising ENVI file

I am trying to read a .bip AVIRIS file using GDAL in Python. here is the code: from osgeo import gdal from osgeo import ogr from osgeo import osr from osgeo import gdal_array from osgeo.gdalconst ...
0
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0answers
25 views

Problem in Exporting Vector shapefile to ROI(Region Of Interest) in ENVI-4.7

I working in ENVI image processing software. I want to export shape file to ROI in order to create subset of the image .For This first I loaded shapefile converted that into .evf format .While ...
0
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0answers
17 views

Masked data included in ISODATA classification computations?

I am using ENVI to mask NDVI MOD13Q1 images using the "pixel_reliability" raster included in the MOD13Q1 hdf. All instances of cloud cover (pixel_reliability=3) have been masked (=0). I have applied ...
0
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0answers
37 views

How to save image after linear spectral unmixing using ENVI 4.7

I am trying to save the data value from unmixing method but it didnt show me exact values but it scale up from 0 to 255. I am saving image as tif and other type of image but it doesnt work, I read ...
0
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0answers
42 views

Using MODIS Terra TIF file to get land-water map

So, I have downloaded the 7-2-1 tif data (Not HDF) from the MODIS website and I want to create a map that shows flooded and non-flooded regions. I would like to do ISODATA classification in Matlab ...
0
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0answers
40 views

How to export decision tree in ENVI to word document

I'd like to include Decision tree in ENVI which I used to classification of land cover types in my paper. Is there any direct way to export this tree into JPEG, TIFF format or word document instead of ...
0
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0answers
133 views

Top-of-atmosphere reflectance conversion with WorldView-2 images

I recently received a set of radiometrically-corrected dynamic range adjusted 8-byte WorldView-2 images. I want to convert to top-of-atmosphere reflectance and would like to use the FLAASH in ENVI 4.8 ...
0
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0answers
58 views

How to convert decision tree to ruleset in eCognition?

I have created a decision tree which created using decision tree tool in ENVI to classify 10 land cover types. Now I want to convert it to a ruleset in eCognition. How can I convert it? Thank you ...
0
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0answers
46 views

How to Calculate Mean Temperature of 8 bands using ArcGIS for Desktop?

I have an image file which has 8 bands stacked which represents temperature of 8 different days. How do I calculate the mean of these 8 bands and display it in ArcMap?