Questions tagged [erdas-imagine]

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

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How to avoid background zero values in erdas imagine model maker? [duplicate]

Does anyone know how to avoid background black color/ zero value in background pixels in processed images using erdas imagine? Particularly in model maker. It's confusing in statistical calculation.
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344 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 ...
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48 views

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 ...
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1k views

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 ...
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70 views

Water grey levels - remote sensing [closed]

by viewing two bands in erdas imagine the grey levels of the water differ. on the one image as below the water is dark and the other image the water is light. why is that? what cause the difference?...
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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 ...
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662 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 ...
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42 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 ...
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43 views

Which georeferencing method for Himalayan Awifs-Awifs registration

I would like to know which georeferencing method would provide the best result for Himalayan region in-case of Awifs(Raw) to Awifs(master) georeferencing.. I have already tried polynomial ...
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310 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 ...
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183 views

Error when converting shapefile to .dxf

I have created a polygon shapefile in Erdas Imagine 9.2 from a raster image. I want to export it to .dxf or .dgn for further processing. When I export the .shp to .dxf in Global Mapper, large polygons ...
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150 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 ...
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112 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.
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228 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 ...
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334 views

What does “unit name Degrees not found” error mean in ERDAS?

I want to create a mosaic in Erdas. When I want to add an image file in the Mosaic Tool interface in Erdas, Erdas showed me the error saying "unit name Degrees not found". Then I tried to change the ...
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1answer
3k views

Imagine files between ERDAS and ENVI

I have ENVI 5.0 , ERDAS 2013 SP2, and ArcGIS 10.1 SP1. Every time I save an Imagine file from ENVI 5.0 and open in ERDAS 2013 and it seems like ERDAS does not like it and it would not open and would ...
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2answers
3k views

Mysterious Problems with .IGE file [closed]

I'm trying to manipulate an .IGE file, which I understand is a raster data format developed by Erdas Imagine. The data I've downloaded is the National Land Cover Database (NLCD) 2006 Percent Developed ...
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1answer
646 views

How to work on histograms in ERDAS Imagine?

Is there a possibility to work on histograms in ERDAS Imagine? For example: Compare histograms of different images or different extents Shift them or find patterns I thought there must be good ...
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2answers
2k views

Convert ERDAS Imagine AOI to Shapefile

I was trying to convert a very simple Erdas Imagine AOI file (its a single polygon) into a shapefile and was mostly finding documentation on the inverse (SHP to AOI). I was trying to follow the steps ...
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2answers
8k 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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1answer
324 views

Is TOA reflectance in floating point or DN? [closed]

After converting at radiance to TOA reflectance,is going to be in DN or floating point.
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1answer
184 views

How to choose pixel values according to each land cover class?

I would like to do following steps using two types of images (precpitation and Land cover image): select pixel values of precipitation image within each land cover classes calculate total amount of ...
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1answer
226 views

ECW not reocgnized as supported file format in GDAL operation

I've installed QGIS 3.6 for MAC, with GDAL 2.4, ECW GDAL Plugin for GDAL 2.4, and manually installed the libraries from ERDAS ECWJP2SDK 5.4. This allows me to insert ECW files as raster layers in ...
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2answers
92 views

Projection shapefile

I created a shapefile of Sundarban area Bangladesh. Here it is: Here is the projection information about it: I want this shapefile to project upon an image which is here [I downloaded it from ...
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1answer
45 views

Where can I find the viewing properties on ERDAS?

The instructions state to click on vector and then viewing properties yet I cannot find the viewing properties. When I click on vector in the main menu there is no option for viewing properties.
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2answers
580 views

Analysing Landsat images using ERDAS IMAGINE and ArcGIS

I am trying to use the Theil-Sen analysis on the Landsat images to compute vegetation indices, help me figure out how to come up with the median from the Theil-Sen equation in ArcGIS, ERDAS IMAGINE or ...
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1answer
938 views

Change raster value manually

I am working with elevation data layer. I need to change a few of the pixel values of a raster layer manually. I use ArcGIS, ERDAS, QGIS. Few of the pixel values were deviated widely than its ...
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1answer
666 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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1answer
188 views

Obtaining NDVI data from red-edge imagery?

I am working with an aerial image containing three spectral bands (blue, green, and red-edge). I can obtain an NDVI image with the imagery using Erdas Imagine, but I do not know which bands Imagine is ...
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1answer
654 views

How to remove shadows from high resolution imagery (IKONOS 1M)

I have dataset imagery comes from IKONOS satellite, the dataset contains "imagery with 1m resolution - metadata - rpc file", the metadata file contains the information about "Sun Angle Azimuth - Sun ...
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1answer
360 views

Segmentation and Classification in ERDAS

I have segmented an image inn erdas and will want to use it in a classification exercise, how do i proceed? My image is a low resolution 30m alos.
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1answer
446 views

Converting tif to format for TIMESAT using BEAM VISAT or ERDAS IMAGINE?

How can I convert tif image into a format for TIMESAT software to create a time series? I am using BEAM VISAT or ERDAS IMAGINE program.
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1answer
992 views

How can I split one band from 3 stacked layer image by ERDAS IMAGINE?

I have a 3 layers stacked image, each layer represents a band ratio for lithology extractions for geological purposes. I need to separate each layer separately how can I do this by using erdas ...
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1answer
2k views

What is a DTM in Grid format?

A client asked us for a group of files of DTM in Grid Format. And my question is, what is this DTM in Grid format? O maybe its same of DEM? Is it possible to convert from DEM gray scale format to DTM ...
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3answers
521 views

Automated Forest Change Detection

Using two different time of images in the same places. Can i develop an automated change detection for forest area? What / which are the suitable software to used?
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1answer
368 views

Extract feature for automation method using ERDAS Imagine 2013 software?

I have Quickbird Satellite data, hence I want to extraction from Building foot prints using automation method. Could you give whether its possible or not using ERDAS Imagine 2013?
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1answer
220 views

how to multiply and group values of NDVI in Erdas

I have downloaded the MODIS data for calculating the NDVi but the ranges of values in its attribute table ranges from -32768 to 9830 i want to club the similar values upto 2 decimal places and also ...
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1answer
86 views

Is there any method to choose the value of each pixel according to land cover

I have 2 images; one is land cover image (imgA) and monthly mean temperature image (imgB). I'd like to choose value of each pixel from imgB corresponding to imgA. WhaT I expected is each pixel of ...
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2answers
435 views

How to modify 2 raster images to have the same resolution?

I have data for 2 rasters images that have different resolutions: z downloaded from trmm An MSAVI2 output image. For calculating the correlation between them, the data has to be in the same ...
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1answer
407 views

How to make Mapnik render Erdas images in RGB instead of grayscale?

I have some orthophoto files (Erdas Imagine format) enclosed in a vrt file. When I view it in any desktop GIS it has proper RGB colors, but when I use the vrt in Mapnik to render some tiles, I get ...
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1answer
531 views

NDVI image value

In order to get monthly NDVI image with max value from two 16 day-images, I used mosaick tool in ERDAS8.7 by choosing max function from "set overlap function" tool. But after doing this, when I see ...
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1answer
13 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 ...
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32 views

How to use knowledge engineer in Erdas Imagine for rule based classification

I want to use rule based classification in knowledge engineer section of erdas imagine software. But I don't know how to create a *.ckb file. Can somebody point me to some reference material or ...
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18 views

Atmospheric correction using ERDAS 2014

There are some questions about atmospheric correction using ERDAS. Is it possible to use the atmospheric corrected satellite image to calculate NDVI and LST using ATCOR of ERDAS? If not, I wonder if ...
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1answer
89 views

Pleiades atmospheric correction

I have phr1a and phr1b images (Pleiades) and I need to make atmospheric correction. First, I tried to do this by using Envi FLAASH. by the way, I tried also ERDAS atcor but there was also same ...
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1answer
41 views

Extracting DEM from PRISM data?

I have PRISM data which is in the following format. Are there any ways (software and methods) to extract the DEM or elevation information from these data files?
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42 views

Set multiple values to nodata - Erdas Imagine 2015

I am having trouble with the data ranges in the Landsat 8 surface reflectance product which I downloaded from USGS. The Lansat 8 surface reflectance handbook says the valid range is 0 - 10,000 range ...
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2answers
195 views

What Geometric model can I use for the old black and white aerial imagery?

I am working a lot of aerial photos that are very old and were scanned by a contractor. The flight were taken and snapshot over the national forest. The aerial photos are not georeference. I am going ...
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335 views

How to do topographic correction of Landsat 8 image in ERDAS?

I am trying to perform a topographic correction of a Landsat 8 image using the C method described in the paper below. I am doing this in ERDAS IMAGINE Spatial Modeler. However, I am not sure how to ...
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1answer
45 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 "...