ERDAS IMAGINE is a remote sensing application with raster graphics editor abilities designed by ERDAS for geospatial applications.

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109 views

Calculating vegetation indices on pansharpened landsat 7 images [on hold]

I have a problem with calculating vegetation indices like EVI, GSAVI, SAVI on Landsat 7 images after I done a Brovey Transform, Modified Resolution Merge and HCS transformation in Erdas 2013. My ...
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2answers
175 views

Where do I find the covariance matrix in Erdas Imagine?

I've just run a principal components analysis on a Landsat image and am trying to calculate my factor loadings. I'm using the textbook Digital Image Processing by John Jenson as a guide and it says ...
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1answer
18 views

How to apply Melt Area Detection Index to MODIS imagery?

I am working with some MODIS imagery for a project (I'm relatively new to remote sensing) using MOD09GA, and hoping to apply a melt area detection index (MADI) to images to calculate melt day length ...
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1answer
4k views

How to import HDF (L1G) files into ArcGIS for Desktop?

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.
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0answers
17 views

Doing supervised classification for images on ERDAS?

i want to do a supervised classification for images on ERDAS, using GIS, i clipped the areas i want to use as training/signature from the original images. but i just can't create a signature file, ...
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0answers
15 views

Why Pixel value is zero in Image metada? Do Pixel value and file pixel value represent different or same meaning?

I have opened a Raster Raw image in Erdas Imagine and stacked four bands and I opened the stacked image in software. After I opened the metadata from home menu. I clicked on Pixel and saw that all ...
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3answers
2k views

Calculating area of vegetation in raster file?

How do I calculate area of several vegetation types in a raster (.img file type) image. They are color coded. Am using QGIS (1.8.0) and ERDAS 9.2.
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1answer
255 views

Extraction of pixels from layerstacked NDVI image

How do I get rice pixels only from layerstack NDVI (modis) or SASI image? I also have a thematic rice image Please tell me how to do in erdas.
2
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1answer
54 views

How to overlay Radiance (Top-of Atmospheric radiance) over Digital Numbers Image?

I am trying to process INSAT-3D images, which contain six different bands. I have to extract each and every band form the .h5 data file, so when I extract first band (MIR) band form the data set, I ...
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1answer
366 views

split multi-band raster to separate rasters in ERDAS IMAGINE

I am currently using ERDAS IMAGINE 2013. I have a 28 Band MODIS image. Is there any way in IMAGINE I could split the 28 bands of the MODIS image into single band images?
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2answers
240 views

Erdas Imagine Error: Performance warning: Covariance calculation requires stack processing but input layer stack isn't suitable. How to solve it?

I am collecting signatures right now and when I am adding them to the Signature Editor Erdas says: Performance warning: Covariance calculation requires stack processing but input layer stack ...
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0answers
24 views

Accuracy assessment in Erdas imagine

Is it necessary to do an accuracy assessment for an unsupervised classification done for a Landsat 5 image?
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1answer
204 views

Installing Google Earth ribbon tab in Erdas?

I have Erdas Imagine 11 and Google Earth installed, however the Erdas interface does not show the Google Earth ribbon tab. I've tried re-installing both software packages, but the toolbox does not ...
2
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1answer
297 views

supervised classification

I am having a problem in creating new signatures in Signature Editor in ERDAS 2014. Whenever I click on the icon (i.e., after selecting the aoi), it shows an error which says "unable to open ...
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0answers
28 views

Calculating Excess Green / Excess Red vegetation indices using Adobe CS6

I am undertaking an agricultural mapping project in which I'm imaging a field using a UAV equipped with a 16.1MP RGB digital camera. I am attempting to process the images to yield vegetation indices ...
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2answers
863 views

Using sieve filter in ERDAS Imagine and/or ArcGIS for Desktop?

Where can i use a sieve filter for my supervised classification? Can i do it in Erdas Imagine or in ArcGIS? I can't find it anywhere.
0
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1answer
26 views

How to perform radiometric correction and enhancement processing to get the coastal habitats?

I have a satellite image that is processed to unsupervised classification. I have to get the coastal habitats from this image. The satellite image before classification process need radiometric ...
1
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0answers
19 views

Erdas mosaic producing lots of black space?

I am trying to create an imagery mosaic using erdas imagine. The original files were in a 16 bit DIM Pan-Sharpened format, which produced a completely unusable blank raster (likely an issue with color ...
0
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1answer
23 views

Activating swipe tool in ERDAS imagine?

I am having a problem trying to enable (activate) the swipe tool in ERDAS imagine. I used to use it but due to some reason the tool is deactivated. Is there a way?
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1answer
25 views

what is the basic programming language or code language for raster swipe tool? [closed]

How to develop a Swipe tool for rasters or vectors (Spatial layer) like openlayers or ErdasImagine. Can any one give me the references please
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1answer
129 views

Layer stacking Sentinel 2 imagery

Is it possible to layer stack all 13 Sentinel 2 bands or can I only layer stack those that are the same resolution (so for example the blue, green red and NIR bands). I have a very large area of ...
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0answers
55 views

Layer stacking many images using Python and Erdas Imagine Spatial Modeler

I have downloaded huge amounts of Sentinel 2 data to cover a large area of the Himalayas and need to layer stack each tile. I have decided to use Python to do this using the LayerStack tool from Erdas ...
1
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3answers
88 views

What preprocessing is required when using Landsat for LULC?

Can anyone help me regarding the what kind of image pre-processing techniques should be used for the landsat images downloaded from http://earthexplorer.usgs.gov/ to create land-use land-cover (LULC) ...
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2answers
334 views

How to remove sandy dots in an image?

I am processing a LandSAT image for geological purposes. After some processing there are so many sandy dots in the image. To get clear geological formation as a polygon I want to remove small sandy ...
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0answers
24 views

Spectral classification for crops

I'd like to do a classification using a multispectral raster (1 Blue 475, 2 Green 560, 3 Red 668, 4 Red Edge 717, 5 Near IR 840). I'd like to classify the crops (kiwi plants). I tried a few ...
2
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0answers
64 views

How Does Erdas calculates the ground coordinates for each pixel in the image

How Does Erdas calculates the ground coordinates for each pixel in the image I have a conceptual question regarding photogrammetry, what is the formula used by Erdas to find the (X,Y,Z) on ground. ...
2
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1answer
652 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 = -...
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0answers
48 views

Interpretation of land use/ land cover change matrix in ERDAS Imagine

My question is related to landuse land cover change detection using ERDAS Imagine. First, I have classified all the satellite imageries using supervised classification in ERDAS Imagine. Now I want to ...
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0answers
11 views

Data type doesn't match error in Sieve filter

I classified some land cover types in aerial image with Erdas Imagine, now I want to remove classification errors showing very small areas. I tried to use Sieve filter, but getting error notification "...
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2answers
148 views

Unstack band layers from raster

I have stacked layer (from ERDAS) of Landsat 1-5 and 7, bands. I want each of the bands in a separate layer. How can I do that?
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0answers
35 views

How do I make a ratio image on Erdas Imagine 2014?

I have a stacked image but want to divide bands 4/5/. I have built a model on the model maker but the resulting image is completely black after running the model. When I open the attributes table the ...
2
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0answers
356 views

Extract road defects from terrestrial LiDAR, in Erdas 2012 or ArcGIS10.1

I'd like to extract road defects from a lidar point cloud. So, wherever a road surface drops or raises by a few mm relative to 100 cm around it. I know it's possible but I just can't find or figure ...
5
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1answer
1k views

Setting “REAL” work/scratch workspace in ESRI/ERDAS etc

I thought the issue was only in ARCGIS but it seems that ERDAS does the same thing. I have my C with 1.7TB and my D with 10TB and my scratch set to d:\scratch but still ERDAS (and ESRI) fills my ...
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2answers
111 views

How to spatial subset (clip) TerraSAR-X SSC data (.cos) using vector files and one of the softwares (ENVI, PCI Geomatica, Erdas Imagine, etc)?

I have SSC data of San Francisco which I have extracted their extent as a KML file using: SARscape > Import Data > SAR Spaceborne > TerraSAR-X Then through some operations in ArcGIS, I have ...
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0answers
373 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 shape ...
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0answers
49 views

Finding spectral reflectance bands for classes created from unsupervised classification

I am working on a project that requires separating water and non-water features based on unsupervised classification in ERDAS Imagine 2015. I have taken the original image, and assigned it into 50 ...
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0answers
87 views

Automatic tie point measurement generate wrong placed tie points

I couldn’t figure out why the Erdas 2015 generates a wrong placed tie points when I use Automatic tie point generation measurement, have a look at the below example.
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1answer
165 views

How do I subset image by vector layer using Erdas Imagine?

I have downloaded MODIS MOD10A2 8 day snow cover image. I need to subset this image. I tried to subset the image in erdas. it says the AOI layer is empty.
0
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0answers
60 views

Pan sharpening of World View 2 image

I want to pan sharp world view 2 multispectral data its panchromatic band using HCS resolution merge tool in erdas imagine, can any one guide about which resampling technique(Nearest neighbour, ...
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0answers
22 views

ERDAS IMAGINE: Spatial Modeler Volume Change

Goal: sum of volume change of two DEM; time 1 - time 2 How to insert an AOI/query for certain area How to get visual change of loss and gain?
2
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2answers
245 views

How to derive the slope angle value from DEM?

I am trying to calculate the steepness of each pixels (30m) from the DEM of 2m resolution. I have made use of ERDAS Imagine - Slope function and returns a contour-like pixel image. The pixel value ...
1
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3answers
648 views

Extraction of monthly image from two-16 day images?

I need to combine two-16 day NDVI image into monthly NDVI image. To do this, what kind of function and formula are used in ENVI, ArcGIS Desktop or ERDAS?
3
votes
1answer
37 views

Displaying Raster Source Information

I have a large number of raster files I'm working on. I need to figure out how each of the files was processed from. I have a composite land cover map and would like to view the file names and ...
1
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1answer
372 views

ERDAS Imagine ecw compression settings

We have some jp2 or img satellite images that we compress to .ecw using ERDAS Imagine. We have realized that with some images we are losing too much information while doing that. What i wanted to ask ...
2
votes
1answer
30 views

How to load Erdas .img files into Whitebox?

Just installed Whitebox 3.2.3 and I'd like to import a 14 MB.img file. The data import options do not list .img as a file source. A web search has also turned up nothing.
1
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1answer
548 views

Importing ERDAS-processed GTOP030 dem data into ArcGIS Desktop?

I have two GTOP030 DEM images. After downloading them, I have imported into ERDAS and mosaiced them. Then I have exported it to .tif file in order to open it in ARCGIS. But when I tried to open it in ...
3
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0answers
74 views

How to remove black pixels in Landsat image

Does anyone know how I can remove these black pixels around the edge of this Landsat image? They appeared when I layer-stacked the bands in ERDAS IMAGINE - they were not there in the separate band ...
3
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0answers
75 views

Using original Landsat multispectral image or pan-sharpened image in land cover classification?

I am currently creating land cover maps of a number of national parks across Asia from Landsat 8 imagery and also later from SPOT imagery. I plan to use supervised classifications in ERDAS IMAGINE and ...
2
votes
1answer
2k views

Formula for Enhanced Vegetation Index (EVI) in ERDAS modelbuilder?

I am trying to derive Enhanced Vegetation Index (EVI) from Landsat 5 TM data using ERDAS model builder.d I can't seem to get the output I want as it comes out blank. This is the formula that I used:...
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0answers
28 views

Erdas LPS : how to rename points_ID values?

I'm working with ERDAS LPS 2014, i would like edit the name given for my GCPs and TPs (add the following suffix : "_w"). I tried to do that thanks to the "formula" menu... in vain. I did not find a ...