All Questions
162 questions with no upvoted or accepted answers
1
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115
views
Can I use a signature for more than one picture?
I want to use the signature from one picture and use it in other. Can I do this using ERDAS Imagine?
- 11
1
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0
answers
2k
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Resample Landsat 8 to 60m Resolution
I have two Landsat images for the same study area. One of them in 1975 (Landsat 2 MSS with 60m resolution) and the other in 2014 (Landsat8 OLI with 30m resolution). I want to do change detection ...
- 69
1
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0
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96
views
What is the Pro or Cons for mosaic 30 GB jp2000?
Has anyone tried mosaic jp2000 imagery in ERDAS, ArcGIS , ENVI or any softwares that they have accomplished ?
I have three jp2000 files that is total about 28.1 GB that I want to mosaic with ?
- 4,139
1
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0
answers
82
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/1.#IND error in ERDAS
I was applying the vegetation index
($n1_ttc0003r_16(2) - $n1_ttc0003r_16(4)) / ($n1_ttc0003r_16(2) + $n1_ttc0003r_16(4))
to a multispectral image, and the raster resulting on this operation had all ...
1
vote
0
answers
534
views
Retrieving Aerosol Optical Depth (AOT) from Landsat multispectral data
I need to retrieve Aerosol Optical Depth from Landsat multispectral datasets.
Has anyone successfully tried something like that before?
- 31
1
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0
answers
397
views
Rectification of a lot of images using ERDAS IMAGINE
I want to rectify many images of same area but different dates at a time in ERDAS Imagine
1 I did this using Batch processing but I have no out put. Second I did reproject many images using Batch ...
- 41
1
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0
answers
279
views
convert headerless flat binary files to tif
I have set of headerless flat binary files (those are out put files of TIMESAT software). I want to convert those to .tif format.
I did it using ENVI. but it does not overlap with the original input ...
- 61
1
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0
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58
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Imagine 2014 displaying images with large no-data values
I'm starting to use Imagine 2014 after a recent upgrade. The images I'm using have data values in the range of approximately -.02 to 350.0. The no-data values bordering the data has a value of 2 ...
- 11
1
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0
answers
1k
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Calculating TOA reflectance from Radiance using Erdas Imagine for a Spot2 image
Using the SPOT equation ρ = π L/[E cos (θs) d-²] to calculate TOA reflectance from Radiance.
L was calculated using this equation [L = (X/A) + B]
d was calculated by converting date to julian day ...
- 129
1
vote
1
answer
126
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Exporting landcover clasiffication from ENVI to SAGA
I have basic knowledge in remote sensing and GIS. I have generated landcover map in ENVI 4.7. How can I transfer or Export/Import this into SAGA so that I perform other functions in SAGA. I want to ...
- 11
1
vote
1
answer
1k
views
Creating batch file from ERDAS IMAGINE Spatial Modeler?
How to create batch file from the ERDAS IMAGINE Spatial Modeler?
I want to do the same process to different input images, something similar which we can do by batch processing of the existing ...
- 11
1
vote
0
answers
887
views
Conversion problem of projection of MODIS LAI from sinusoidal to geographic
I am trying to change MODIS data's (LAI) sinusoidal projection to geographic. Actually I did it. But when I reproject it by ERDAS, the output LAI raster moved about 10 km to west side of actual ...
- 315
1
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0
answers
48
views
Determine sun elevation without header file?
I have some AWiFS and LISS-III data that I'm trying to convert from at-sensor spectral radiance to top-of-atmosphere reflectance. The problem is, the data didn't come with any header file. All I ...
- 151
1
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0
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374
views
Uninstall ERDAS ECW/JP2 SDK Version 5.0 (Ubuntu)
I am using Ubuntu Linux as main OS when it comes to geoprocessing but I am not yet an expert using it. I recently needed QGIS to have ECW support, so I followed the instructions of Luke in the ...
- 457
1
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0
answers
174
views
Why does ERDAS not like my GDAL output?
I am creating a raster using GDAL and the IMAGINE file doesn't work in ERDAS because it doesn't recognize the projection.
Here is the code to generate a sample:
from osgeo import gdal
projectionWkt ...
- 873
1
vote
0
answers
265
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 ...
- 11
1
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0
answers
119
views
Is there any accuracy difference between standard DTM editing tools like DT Master and automatic removal of artefacts using ERDAS?
I would like to know whether there is any accuracy difference while editing DTM points using standard photogrammetry software like Inpho DT Master and automatics removal of artefacts in ERDAS imagine.
- 11
1
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0
answers
249
views
How do you convert an Imagine raster attribute value into the raster value?
I have a raster derived from image segments with row id as the value. I have an attribute in the attribute table which should be the raster value, "Standard deviation layer 5" (see image). How do I ...
- 151
1
vote
1
answer
1k
views
How to save an image stretch/enhancement in ENVI?
I am using ENVI 5.3.1 and viewing a georeferenced satellite image with a linear 1% histogram stretch applied to the entire image. When exporting the image with the current histogram stretch using File-...
- 155
0
votes
0
answers
11
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ENVI Random Forest ROI file causing crash
I am trying to run the ENVI Random Forest Classification tool. I know there are better ways to set up a Random Forest classifier, but as this is the software provided for the course I am doing, I need ...
0
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0
answers
8
views
OOB Statistics for ENVI Random Forest Classifier
I am running the Random Forest Classifier in the ENVI Machine Learning module. In the settings, there is a tick box for Out-of-Bag (OOB) Score. When you hover over the OOB Score text it says, "...
0
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0
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29
views
How to resolve ENVI Flaash ACC error
I am currently preprocessing aster radiance at sensor(level 1b) images which I downloaded as .tif files, and can be accessed via this link from Earthdata. These are radiometric and geometrically ...
0
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0
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12
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ENVI change fontsize in panels
I'm a newbie to ENVI 6.0. I have bad vision. The text in the panels is way too small, but I can't find where to change the font size in the panels (lots of other places, but not there).
Can anyone ...
- 101
0
votes
1
answer
124
views
Python notebook causing ArcGIS Pro to crash
On my laptop are student licenses to ArcGIS Pro 3.2, ENVI 6.0 and Agisoft Metashape 2.0.3. I'm in an intro to GIS programming class and when I try to open a Python notebook in ArcGIS Pro (from the ...
- 1
0
votes
0
answers
39
views
Classification in ENVI
I classified multiple images using ENVI modeler and I would like class statistics for each image. Is there a task available in ENVI modeler that can do this? I know I can right click each image and ...
- 1
0
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0
answers
46
views
What data does clustering use from multiple raster files?
I currently have a series of rasters of the same area across different times. The data is categorical: the product of a supervised classification used on LANDSAT data run on ERDAS Imagine. Each ...
- 23
0
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0
answers
46
views
ENVI 5.6.2 HSV problem
I've used ENVI a lot in the past, but am a bit rusty. I have never ran into this problem and can't find anything online about it. I'm trying to do HSV sharpening with 3 band multispectral data and a ...
0
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0
answers
34
views
Erdas - Export LUT Instead Of Real Values
I am using Erdas 2022.
I have NDVI index of an imaging, and after creating it, the view shows a LUT which is not the original pixels, which is essentially the automatic stretching of the program.
I ...
- 101
0
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0
answers
46
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Excluding 'No Data' Pixels When Counting number of pixels in an AOI with ERDAS IMAGINE
I'm working with Landsat imagery in ERDAS IMAGINE 2014 and have encountered an issue with 'no data' pixels within my Area of Interest (AOI). The AOI includes unwanted 'no data' pixels that are ...
0
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0
answers
72
views
What does the metadata tell you about an image and its sensor?
I'm using a software called ERDAS and my tutor says that the Metadata can be used to detect which sensor your image came from. Is there anything you can tell me that links the metadata to the sensor?
...
0
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0
answers
22
views
Merging Subswaths with ERDAS Imagine
Does anyone have experience with merging subswaths of a SLC Sentinel 1 image in ERDAS Imagine? I cannot find the right function for it.
0
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0
answers
38
views
Problems trying to intersect two shapefiles
I keep having problems trying to intersect two shapefiles.
One of them is a normal file that I downloaded from geoamenagement.com. The other I created by using the classification protocol tool on an ...
0
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0
answers
111
views
Opening images layer stacked on ArcMap into ERDAS
I noticed that ArcMap can open almost anything but if I do a band combination or a supervised or unsupervised classification on ArcMap I cannot open it on ERDAS.
Is there a way around it?
0
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0
answers
208
views
Mosaic different data Sentinel-2 L2A image with color difference
I have downloaded two L2A level sentinel-2 images at 2022-09-05 and 2022-09-07 from scihub. After subset and resampling on SANP, I used seamless mosaic in ENVI to mosaic the two scenes, and I found ...
0
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1
answer
87
views
RPC sensor model coefficient auxiliary data structure
I am part of a college team building a hyperspectral small satellite (3U). We would like to use ENVI's orthorectification module to do ortho. However, we need to generate our own RPC or sensor model. ...
0
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0
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93
views
Using one set of ROIs to classify multiple raster layers in ENVI?
I am attempting to run a SAM classification on an airborne hyperspectral dataset with six total flight lines, and the files are too large to mosaic before processing. Is it possible to create an ...
- 23
0
votes
1
answer
58
views
NDVI value from different download sources
I downloaded the Level 2 image of landsat-8 in GEE and calculated the NDVI value in ENVI. At the same time, the Level 1 image of the corresponding date was downloaded from the USGS, and the NDVI value ...
- 1
0
votes
1
answer
273
views
Doing Layer stack in ERDAS Imagine
I am trying to do "Layer Stack" of Landsat 5 Surface Reflectance image in ERDAS Imagine 2015 but every time i get output as black and white image. Though pixels have RGB values but still ...
0
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0
answers
293
views
Converting NTF to TIF using ArcGIS Pro in order to run FLAASH Correction
I received worldview 2 files but some are in the .ntf while others are in the .tiff format. I am able to work and FLAASH the files that are in the .tiff format but I am unable to FLAASH the .ntf files....
- 1
0
votes
0
answers
139
views
Getting pixel values from lat/long values using ENVI
I am using ENVI software to process satellite image. I have two images from two different satellites and I want to get the value of the same point in the two images. I got random points from the first ...
0
votes
0
answers
73
views
LPF and HPF filters in ENVI
Since we know about convolution filter in image processing, it is basically a matrix applied to an image and a mathematical operation comprised of integers and it works by determining the value of a ...
- 151
0
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0
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189
views
Difference between two atmospherically corrected Images
I corrected Landsat 5 image with two different methods, first atmospheric correction through calibration (means converting raw image into radiance), second atmospheric correction through QUAC ...
- 151
0
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0
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234
views
Mosaic multiple 7gb TIFF into one big TIFF
I have data of 10 sets each with 361 channels in format of ENVI.
Each set contain:
7gb format-less file (BSQ #UPDATE)
2.4gb .ENP file
9kb .HDR file
I try to mosaic all of them in one big file.
What ...
- 43
0
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1k
views
0
votes
0
answers
474
views
Input image does not match with signature file in supervised classification
I have a issue in supervised classification on ERDAS IMAGINE. When ever I performed supervised classification it gives a warning message. It says:
iInput image does not match signature's image ...
0
votes
1
answer
272
views
ENVI fmask Error for Landsat 5 data
I'm trying to mask cloud cover of multi-spectral Landsat 5 image containing bands 1-7 that have been preprocessed using dark object subtraction and Landsat calibration.
I am using the fmask tool in ...
0
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0
answers
79
views
Rescaling MNDWI to normalize
This statistic report shows the scale after done the MNDWI index process by using software ENVI 5.1.
Normally expect result have to be -1 to +1 scale.
How to get which scale?
0
votes
1
answer
75
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 ...
0
votes
1
answer
207
views
ERDAS mosaicPro from 2D view reference layer is not displayed on top
I am having an issue using the ERDAS mosaicPro from 2D view tool. I am using ERDAS 2015. I have two separate Landsat 8 file bands. Band 1 from one date and Band 1 from another date. I have ran the ...
- 1,390
0
votes
1
answer
262
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Preparing raster Image for correlation in ENVI 5.5
I am working with two raster image of the same location with the same extent, both projected to the same coordinate system and having the same cell size. I want to correlate the raster value on the ...
- 1