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

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15 views

Converting data type in ERDAS IMAGINE and ArcGIS for Desktop?

My tif image data type is float (i.e. my data is between -1 to +1) and I want to convert it into 8bit unsigned integer. I used ERDAS IMAGINE import tool to do this, while converting it into img also. ...
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0answers
6 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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2answers
1k views

Calculating Net Primary Production (NPP)?

When I calculate Net primary production (NPP) for a local scale, what kind of software should I use? I always use ENVI, ERDAS IMAGINE, ArcGIS for Desktop and IDRISI. Is it possible to use these ...
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2answers
72 views

Floating point to 8-bit unsigned raster conversion using ArcGIS for Desktop or ERDAS IMAGINE?

I have an image with value ranging from -1 to +1. I want to convert this into 0-255 (8bit). How can this be done using ArcGIS for Desktop or ERDAS IMAGINE?
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1answer
984 views

Open Source Alternatives to ERDAS IMAGINE ATCOR?

I have been using ERDAS IMAGINE's ATCOR extension for ATmospheric CORrection of ASTER imagery. What opensource options exist for atmospheric correction of ASTER Level 1B products? I'm primarily ...
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1answer
29 views

Problems using ATCOR for Erdas Imagine '13

An output from ATCOR processing (besides an atmospheric correction and dehazing) is expected to be an image containing true reflectance values (instead of raw input DNs). As far as I know such data ...
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1answer
28 views

How to display the one band layer in pseudocolor using ERDAS Imagine?

I am a new user in ERDAS imagine and i found it hard to turn the single band raster data from grey color to pseudocolor using ERDAS imagine. This process could be easier to be performed using ER ...
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0answers
14 views

Problem of importing signature files from stacked dataset of Landsat 8

I tried importing a signature file using the AOI file from a stacked image of 16 bands of Landsat 8 on ERDAS 9.1. Its just not happening. Error message says "statistics info not found". However a ...
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0answers
18 views

Run an ERDAS Imagine pmdl (or bcf) via Python?

How (or is it) possible to run an Erdas Imagine .pmdl model from a Python script? I have successfully run .eml models but cannot get the syntax right for .pmdl Here is what the line I want to run ...
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1answer
178 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 ...
4
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1answer
189 views

Methods of cloud shadow detection for Landsat data?

Detecting clouds doesn't seem to be much of a problem, rather the challenge is in selecting cloud-shadow classes that don't also include coastal areas, agriculture, etc. For a project I'm working on, ...
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1answer
130 views

Using Mosaicking Images in Erdas software

Do you know any dissertation which has written about Mosaic briefly? I did the Mosaic for my Landsat images but i want to explain and write about but i do not know how and what shall i write about it ...
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0answers
78 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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1answer
411 views

Converting ERDAS (*.img) file into headerless binary file?

I am having trouble converting an ERDAS (*.img) file into a headerless binary file. I want to use those images in the TIMESAT program. I'm trying to do this in IDRISI 32 but there is an error ...
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0answers
22 views

How to create Strips with GCP point distribution for raw GeoEye satellite imagery?

I have raw GeoEye satellite imagery, I just want some guidelines for creating a strip map with GCP distribution. We need to make orthorectification for raw GeoEye satellite imagery, I think it's ...
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0answers
28 views

IMG and geoTIFF raster extraction

everyone. I'm very new to GIS technologies. Somehow, i need to extract raster(RGB data) data from geoTIFF and IMG files. What is the fastest way doing it?
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1answer
57 views

Erdas Imagine DN to TOA reflectance for SPOT images

I would like to convet DN to TOA reflectance in Erdas Imagine 2013. I see there is a way of doing this for Landsat7 in the Radiometric tab. How can I do this for SPOT2,4,5 images?
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0answers
25 views

Water grey levels - remote sensing

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 ...
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1answer
132 views

What are the pros and cons of forcing square pixels on reprojection?

I am using Erdas Imagine 2014 to reproject 4-band raster data from GRS 1980 NAD83 Lambert Conformal Conic (ft) to UTM GRS 1980 NAD83 North UTM Zone 11 (m). Unlike ArcGIS, Erdas provides the option to ...
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1answer
38 views

Performing image rectification to a jpeg using ERDAS Imagine [closed]

I am trying to rectify some images on ERDAS Imagine. These images are jpegs. They have no projection data. How do I do this?
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1answer
96 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 ...
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2answers
104 views

How to reduce the resolution of satellite imagery data for use in MATLAB

When I am using the 4-band multispectral data for NDVI calculation, after successful completion of runtime, it shows some warning message like "Loading 17%..." How should I rectify it? Should I do ...
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2answers
60 views

Normalizing landsat image pixels prior to classification?

I have 5 different years (all in the same month) of Landsat TM imagery to perform classification on and I would like to know whether there is a technique to normalise the pixels in each image so my ...
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1answer
42 views

Segmentation - problem with mosaic tiles

Could you please tell me how to solve my problem with segmentation in ERDAS ? I am using ERDAS 2013 and the tool Image Segmentation to segment my multiband picture (with high resolution). ...
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1answer
45 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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1answer
90 views

Erdas python scripting help

I want to write scripts for Erdas in Python. I downloaded some Python examples here but I could not make much. Where can I get the full Help material for Erdas python scripting?
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1answer
61 views

How to rescale data ranges in ERDAS?

I have an Normalized Difference Vegetation Index(NDVI) and Enhanced vegetation index (EVI) layer and I want to re-scale their data ranges to value ranges from 0–to–1, in order to optimally stretch the ...
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0answers
78 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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1answer
37 views

create a vegetation mask using Landsat 7 [closed]

I'm working on a very large study area. The aim is to create a vegetation mask representing only pines. I'm using Landsat 7 images. Since the recordings were made in the winter it's pretty easy to ...
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1answer
117 views

MODIS MOD13Q1 ndvi calculation

i have downloaded the modis MOD13Q1 from usgs glovis in hdf format. how i will convert it into original ndvi value by multiplying scale factor of 0.0001. I am using ERDAS 9.1 & evni 4.7. Can you ...
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1answer
82 views

How to create an Erdas batch list file (.bls) using Python?

How can I generate the Erdas batch list file (.blf) using Python? For example, I want to run a 5x5 median filter in the Batch Command Editor using a subset of images within a folder. Erdas provides ...
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2answers
116 views

Where can i use a sieve filter?

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. Thank you
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1answer
30 views

Creating training areas for parametric classifcation

I am creating a signature file for a supervised classification for a subset of a LANDSAT image. I know what classes I would like to create, and have identified ideal areas for training. However, I am ...
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1answer
26 views

Which format is more convenient to publish in Erdas Apollo?

I am from Bolivia and I need to publish some Satellite images in Erdas Apollo. My question is Which format is more convenient for publish in this software?, because I have Landsat5 TM images in TIFF ...
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0answers
16 views

MODIS MOD13Q1 extract ndvi value [duplicate]

i have downloaded the MODIS MOD13Q1 from USGS GLOVIS in .hdf format. how i will convert it into original ndvi value by multiplying scale factor of 0.0001. I am using ERDAS IMAGINE 9.1 & ENVI 4.7. ...
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0answers
46 views

How to generate GML by extracting heights from DEM?

I am trying to generate GML using satellite images for geometries of various objects, and I propose to use DEM of the corresponding area in order to extract heights. I already have a piece of ...
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0answers
69 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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1answer
38 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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0answers
25 views

unwanted pixel removal in the image [duplicate]

I am processing an image in Erdas Imagine, there are some small unwanted pixels that I want to remove automatically. Is there any way to do so?
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0answers
22 views

Vectorized a historical soil map advice

I received a PDF file of a soil map in the Middle Rio Grande Valley near Albuquerque, New Mexico however it is dated in 1914. I was able to split the north and south because it came in one map and ...
6
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2answers
1k views

Creating shapefile of satellite image footprints?

I'm looking for a tool or a workflow to compute satellite image footprints, for a large number of images across directories, and produce a shapefile. Ideal work flow would be: fire up tool point to ...
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1answer
113 views

'erdas apollo how to enable this service'?

we have installed ERDAS Apollo, and open the welcome page and tell us " you've setup ERDAS APOLLO 2011, v11.0 successfully", but test Sample HTTP requests and got same error: eg: when test ...
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0answers
40 views

Grouping of NDVI values in erdas Imagine

I am trying to extract NDVI values from MODIS image i have image of my study area, when i look at the attribute values of image in Erdas i get the value ranging from -32768 to 9820, I want to create ...
2
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1answer
42 views

Stacking overlapping rasters, keeping cell values on top?

I have a land cover classification that consists of three files. One file is the LCC for the western half of my study area, another covers the eastern half (these two overlap in the middle), and the ...
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0answers
45 views

Script to stack multiple landsat bands in different folders

I wanted to find out if there is a possible script I could use to stack landsat bands into a single image, and then apply that stack command to multiple folders (I have about 100 landsat scenes that ...
2
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4answers
199 views

Determining which “color” each image band represents?

I have a satellite image that has a few bands in it. But I don't know what colors they are supposed to represent, nor do I know where to look for this information--the file's metadata say nothing ...
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0answers
72 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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29 views

change raster values in a specific region on a single band

I am currently using ERDAS IMAGINE 2013. I have a 28 Band MODIS image. In one of the bands, I need to change the values of a certain region. I tried the following: Load the .img file into IMAGINE. ...
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2answers
350 views

georeference IMG file in qgis

I have a problem: I'm trying to georeference a satellite image (ASTER, Erdas Imagine file *.img) in QGis. I have georeferenced with QGis before and never had any problems. The file is georeferenced ...
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43 views

Layer stacking in ERDAS?

When I am doing layer stacking of the liss iv image and ndvi generated from the same image, the output generated is white (flat) in ERDAS Imagine. How to solve the problem?