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

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47 views

How to create a map showing NDVI result in erdas?

I'm using Spot 5 image to run an NDVI analysis. The band that I used in processing is 4,3,2. The area was 80% covered by mangrove. My problem here how can I create a map to show or present the result? ...
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52 views

Exporting file from ArcMap to Erdas?

I edited a Landsat 8 supervised classified image converting it to polygon in ArcMap. Then I converted it to raster using the Polygon to Raster tool using cell center assignment and cell size 30. Then ...
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41 views

Image and AOI files have different Map Info Error Message in ERDAS

I have a raster image at 15m resolution and trying to conduct subpixel classification in ERDAS. I extracted two AOI's (area of interests) from the image and used it for my signature derivation. But ...
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64 views

How to create a spectral library in ERDAS for field derived spectra

I have several spectral signatures derived from a field spectrometer that I want to use in ERDAS. The plan is to import them into a created spectral library and use these field derived signatures in ...
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36 views

Derive individual land cover classes from .jpg map

I have a .jpg image which is land cover classification image with 9 classes. I want to extract raster image (.img file) which contains the same classes as .jpg image (9 classes too). Is there any tool ...
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1answer
51 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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63 views

Using imagine image in arcgis, coordinates don't exist in the spatial reference

I have a processed imagine image with the extension .img and it doesn't import into arcmap correctly. When I try to bring it in it says the coordinates are not in the spatial reference. When I ...
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1answer
427 views

Calculating NDWI in Erdas IMAGINE 2014

I'm using MOD09GQ product of MODIS to calculate vegetation indices in Erdas 2014, and I was able to extract NDVI using Erdas Model Builder. What is the formula I should use in model builder for ...
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150 views

How to save session file in Erdas Imagine 9.2?

I'm trying to continue my work from stopped point. But I can't save my file as .mxd format like in ArcGIS. It's like you add layers in ArcGIS and save working file in your computer which you can open ...
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61 views

Hard wood tree and Soft wood(shrubs) Vegetation Differentiaton

How I Differentiate Hard wood tree (like Mango, Sal) and Soft wood(shrubs like reed) Vegetation using Multispectral or Hyperspectral Image? I have TM, ETM, OLI, Hyperion, Aster Image and ERDAS 2011, ...
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68 views

Which image format is needed to make a spatial profile in Erdas Imagine 2013?

I have a problem with the spatial profile tool in Erdas 2013. When I want to make a profile, appears the message 'Error opening raster layer'. The same problem I have already had before, but after ...
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26 views

Apply mask on ERDAS LPS

I am currently working on my final year dissertation and most of it is done on LPS. I am using Cartosat-1 and ALOS PRISM imagery to create DTMs for an area that is located on a peninsula. The problem ...
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113 views

Calculating vegetation indices on pansharpened landsat 7 images [closed]

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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1answer
111 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 ...
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2answers
348 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 ...
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2answers
664 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?
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1answer
178 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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2answers
207 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 ...
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226 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 ...
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0answers
215 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
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1answer
434 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? ...
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1answer
95 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 effects?...
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173 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 ...
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1answer
247 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 ...
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1answer
449 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 5....
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1answer
96 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 ...
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2answers
248 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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67 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 ...
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2answers
92 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 ...
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1answer
141 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?
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38 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 ...
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2answers
181 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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26 views

Can I use a signature for more than 1 picture?

I want to use the signature from one picture and use it in other. Can I do this using ERDAS Imagine? Thank you.
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1answer
459 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
261 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 ...
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1answer
215 views

Confidence in pan-sharpened classification?

I pan-sharpened one Landsat Image on ERDAS using the resolution merge resource, with brovey transform and nearest neighbor techniques. But I was told that in terms of land-use classification, it would ...
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50 views

Erdas Imagine 2011 removing points from polygons

I've been running into an issue with Erdas Imagine 2011. I have been creating training sites in a polygon shapefile to use with a decision tree classifier but it seems like the software keep ...
2
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2answers
686 views

Remove clumps of pixels in R

I would like to remove isolated pixels (or clumps of pixels <9) from my raster image. library(raster) # create some raster data r <- raster(ncols=12, nrows=12) set.seed(0) r[] <- round(runif(...
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3answers
248 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
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1answer
274 views

Batch unsupervised classification with ERDAS 2011

I work with Erdas Imagine 2011. I would like to do an unsupervised classification and vectorization on 100 Landsat images (.tif). CC_2014_1.tif CC_2014_2.tif CC_2014_3.tif etc However, I am new in ...
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14 views

Conflict with ArcGIS for Desktop and Erdas Emagine on same PC? [duplicate]

I already installed ArcGIS 10.1 for Desktop. The problem is when I install th Erdas Imagine 8.6 that specify above. So, could you help me in order to run both software products in one PC.
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1answer
230 views

Does calculating statistics in ERDAS change raster values?

I've been under the impression that calculating or recalculating statistics in ERDAS doesn't actually modify an image, but I notice when I do this that when I look at the image file in windows ...
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1answer
94 views

Why does the undefined “ghost classes” arise during supervised classification in ERDAS IMAGINE?

After a supervised classification in ERDAS IMAGINE I have some undefined "ghost classes" in the attribute table. Also have a look at this youtube video at about 7:12. I'm wondering why they arise and ...
3
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1answer
133 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: road/...
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0answers
125 views

Data format in ERDAS IMAGINE 2014?

I performed radiometric correction analysis on Landsat 8 image ( format: integer unsigned 16 bit) in ERDAS IMAGIN 2014. However, the output image would be created if I could select format: float 32 ...
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0answers
141 views

Opening image in ERDAS Imagine

I am trying to open a .img image fil in ERDAS Imagine and I keep getting the message "End of file reading dictionary" with ERDAS not responding. The program gets stuck here and I have to shut it down. ...
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0answers
207 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 ...
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1answer
174 views

ERROR in Resolution Merge using ERDAS IMAGINE 2013

I have attached an example image to show the problem: When i have to Resolution Merge, it will come error this process. How to solve this problem? I would like some suggestions regarding this error.
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1answer
347 views

Pro vs Con on using export to JPEG or JP2000 files for large imagery files

What is the preference among GIS Specialist and Remote Sensing Specialist using the JPEG vs JP2000. Yes, I am aware of other compressed files such as ECW or MrSID... I am more of concern of how to ...
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3answers
811 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: ...