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

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6
votes
3answers
371 views

How to easily identify/classify coniferous forest from one date Landsat image?

I am pretty new in remote sensing and I am trying to identify/classify coniferous forest cover from single date Landsat scene. According to my preliminary web research I have these possibilities: ...
1
vote
1answer
307 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). ...
1
vote
0answers
20 views

Calculating vegetation indices on pansharpened landsat 7 images

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 study ...
-2
votes
0answers
22 views

Processing Landsat 8 data using Erdas or ArcGIS Desktop? [closed]

I have downloaded and extracted .rar Landsat 8 data for my study area. What preprocessing and atmospheric correction is needed now? I am using erdas 9.3 and arcgis 9.2. Please guide me with the ...
0
votes
0answers
16 views

ERDAS: Using MODIS Satellite Imagery for Iceberg Detection

I am trying to use MODIS satellite imagery to detect and track icebergs surrounding Antarctica. The software that I am using is Erdas Imagine 2014. I am struggling to differentiate clouds from snow ...
1
vote
1answer
19 views

NDVI error in ERDAS

I have created a NDVI image from Landsat 7 data using ERDAS (veg_NDVI.gmd). This model was already in ERDAS 9.3. After creation the final output visually highlighting vegetative areas but the value ...
2
votes
2answers
88 views

land Use land cover classification

I am working on Land Use/Land Cover Classification of the Hindon river(India) watershed extracted using Aster DEM. Landsat 8 scenes had been used and mosaicked for the required AOI using the Watershed ...
0
votes
3answers
154 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?
2
votes
2answers
108 views

How to atmospherically correct Landsat 8 data?

What is a simple way to atmospherically correct Landsat 8 data using Erdas 9.3 or ArcGIS 9.3?
-1
votes
0answers
15 views

Calling function (Zonal attributes) inside Erdas Imagine 2014 Spatial Model Editor?

I am using the Spatial Model Editor of Erdas Imagine 2014. How do I call a function (Zonal attributes) inside the Spatial Model Editor so that I can process images in batch?
0
votes
1answer
169 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 ...
-3
votes
1answer
364 views

How to calculate cumulative mean in ArcGIS, ERDAS and ENVI? [closed]

I'd like to get cumulative mean value from a multiband image (4 bands). How can I do it in ArcGIS, ERDAS and ENVI?
1
vote
0answers
134 views

Importing GPS coordinates to extract multiple DN values in ERDAS

I have a set of GPS points (stored as a csv for now) and would like to import these points to ERDAS to find the DN values associated with each location. I am able to import a SHP to ERDAS but the ...
2
votes
2answers
112 views

ERROR 1: None of ECW_ENCODE_KEY and ECW_ENCODE_COMPANY were provided

I downloaded ERDAS-ECW_JPEG_2000_SDK-5.1.1 and tried to use it with GDAL to create ECW files from georeferenced PNG files, but they are not created, it basically complains about: ERROR 1: None of ...
0
votes
1answer
40 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.
3
votes
1answer
78 views

Remote Sensing Indices for urban expansion

Apart from NDBI, could you name a few indices for urban expansion? I have done some search on google but haven't found anything that could help me. Perhaps, What I'm interested is also: ...
2
votes
0answers
296 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 ...
1
vote
1answer
107 views

How to remove band from stack in ERDAS 2013?

I have a Landsat 8 scene where I have stacked 11 bands. I need to remove one band from the stacked layer. Is there a toolbox in ERDAS 2013 that allows me to take out a band? I am aware that ENVI ...
1
vote
1answer
122 views

IR/R could not detect when using landsat 8 in ERDAS 2014 Is there a alternative way around?

I'm using ERDAS 2014 and I upgraded from ERDAS 2013. I am doing a lot of band indices for various kinds of such as clay, ferrous, Mineral composite and so on.. from landsat 8. Using the indices in ...
1
vote
0answers
60 views

Erdas Imagine 2014 - Mosaicing SPOT 6 image tiles with seamless colour generation

I have several SPOT 6 image tiles and every time I mosaic the images the final image comes out with different colors, with each depicting the various tiles(image scenes) used in the mosaic. The ...
0
votes
0answers
32 views

how to get the probability value of a pixel during maximum likelihood classification in erdas imagine

I'm trying to do a fuzzy land cover classification using maximum likelihood classification. I need to get the probability of each pixel to fall in a particular class. Some equations have been formed ...
0
votes
0answers
13 views

joining attributes for .img files in erdas

I have numerous .img files of the same region and spatial resolution. In Imagine I would like to join all the attributes together into one .img that I may import into r for model predictions. Not ...
3
votes
3answers
1k views

MODIS image reprojection/ change coordinate system in ArcGIS Desktop?

I have downloaded Utah state shapefile in NAD_1983_UTM_Zone_12N projection and also downloaded the MODIS image of the area (MOD09Q1) in .hdf format which has sinusoidal projection. the .hdf format ...
0
votes
2answers
2k 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 ...
1
vote
0answers
51 views

Layer Stacking landsat 5 surface reflectance high level data

I downloaded the surface reflectance landsat 5 scenes but when I layer stacked them my image was not how I imagined. I manually used atcor on normal scenes and it looks nothing like the scenes I layer ...
2
votes
1answer
153 views

Using Erdas for land cover land use change detection

New to Erdas but I have to do a project and I have chosen to do a landcover land change detection. I have two Landsat 5 images, five years apart from each other. My question is: what is my next step? ...
0
votes
0answers
73 views

Mosaic LANDSAT 4 Image in ERDAS IMAGINE

I am trying to do Mosaic in Erdas imagine. I have three tiles of Landsat data: one is Sept89 others two are March90. I am using Weighted Seamline method and Histogram Matching for the mosaicing but ...
1
vote
1answer
47 views

What exactly does hill shade or Shaded relief , if performed on SRTM DEM will output?

Two questions actually. Does shaded relief or hill shade outputs mean "expelling of shadows"? For a vast country like India, how to prepare a map from SRTM DEM, which does not have any shadow ...
2
votes
0answers
94 views

Large Rasters in ArcGIS & MapInfo

My geoscientists like to work with MapInfo and ArcGIS. I require a common 1 band raster format that can hold obscene amounts of data without damaging the data (compression). I have tried .tif and ...
7
votes
1answer
184 views

What are 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 ...
3
votes
2answers
497 views

Cloud/Shadow Masking: How to shift a cloud mask in Erdas/ArcMap/Py Script

I have the task to mask out cloud cover in approximately 20 landsat 8 scenes. Creating the cloud mask for the "white part" is easy, but I need help in addressing the clouds shadow. General ...
1
vote
2answers
472 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.
1
vote
1answer
57 views

How to create an image of maximum pixel values from an input layer-stack image in ERDAS Imagine?

I have 12 MODIS images (one of each month). I want to create a single image having maximum annual pixel values for each pixel. I did layer stacking operation in Erdas Imagine 13, but how to extract ...
1
vote
0answers
107 views

Division by zero error in Erdas imagine 2014

I'm running a Model maker to divide a couple of rasters. The function is as follows: ($n1_band1 / $n2_band2)* 100 There is no zero in both images (both of them are integers). However, I'm still ...
0
votes
0answers
27 views

Spatial Modeler language variable inputs based raster name

I´m using Erdas Imagine 2010 and need to process images to get reflectance values using the Empirical Line method. To achieve this I need to process 200+ images, each containing multiple bands, with a ...
4
votes
3answers
3k views

How to create animation from raster data?

I have some NDVI and precipitation/temperature images at the monthly time step from Jan, 2005 to Dec, 2008. I need to create animation image to show the temporal change. How can I do this? Is it ...
1
vote
0answers
67 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 ...
1
vote
1answer
46 views

Erdas gmdx to gmd?

I have some spatial models in gmdx format which I couldn't open in erdas 9.2. Is there any way to open gmdx files into erdas 9.2?
0
votes
2answers
67 views

AVHRR Max NDVI product

I'm trying to take a max annual NDVI product derived from AVHRR and relate it to a specific area that I'm examining.This requires me to identify the region of interest based on Landsat scenes, and ...
-3
votes
1answer
1k views

Image classification based on NDVI? [closed]

How can I do classification based on NDVI image. What kind of process and model can do it?
2
votes
5answers
2k views

Batch process to get single band image from stacked image using ArcGIS, ERDAS or ENVI?

Can you help me to extract a single band image from stacked multiband image. Totally, 260 image has been stacked. When I do to this, it will take a long time. So I'd like to know there is any batch ...
1
vote
2answers
1k views

how to do change detection in ERDAS

I'd like to ask a really simple question. I want to obtain the size of unchanged, decreased, and increased area etc (just like shown in image below) from 2 classification images in 2000 and 2007. How ...
0
votes
0answers
48 views

ERDAS model maker - LULC, percent slope

I need to filter out waste lands,scrubs, swamps etc from a LULC of INDIA(1;250000) I have a percent slope map with slope filtered to 15 percent from SRTM-DEM. How to filter using ERDAS model maker?
1
vote
0answers
41 views

Oriented stereopair in ERDAS

I am trying to orient a set of intensity LiDAR images in ERDAS Stereoanalyst for stereo digitizing. The set is consisted of an intensity image and its stereomate. Stereoanalyst is configured for ...
0
votes
0answers
112 views

ERDAS file not recognized as ERDAS Hierarchal File Architecture (EFHA)?

I am trying to do an accuracy assessment in Erdas using "user defined ground control points" (I collected the GPS points myselfin the field using a handheld GPS). However, when I load the thematic ...
0
votes
0answers
105 views

Erdas Imagine/LPS RPC orthorectification

When creating orthos in Erdas imagine or LPS from geoeye-1 (or other) satellite images having _rpc.txt files, which are referenced in WGS84 generally, what should be the projection of the used DEM? If ...
1
vote
5answers
169 views

Looking for simple software to compare two Landsat Images

At uni I used ERDAS imagine to view two rasters at the same time and it had various viewers for comparing them. I'm looking for something that has a slider so that I can see the differences between ...
1
vote
0answers
28 views

Filtering out wastelands,scrubs,swamps, grasslands etc from LULC for India using ERDAS IMAGINE Model maker?

I have a LULC for India. i need to filter out non-agricultural, non-builtup, non-waterbody, non-forest. simply wastelands,scrubs,swamps, grasslands etc. Please how to filter these using ERDAS IMAGINE ...
1
vote
0answers
70 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 ...
3
votes
2answers
763 views

Shapefile Conversion to ERDAS Signature editor

I'm trying to run a supervised classification for an image. I was working with it in ArcMap and created some training data. I wanted to see if I could get a better result with Erdas Imagine using the ...