All Questions
Tagged with erdas or erdas-imagine
283 questions
2
votes
1
answer
145
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.
- 8,386
-2
votes
1
answer
2k
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 ...
0
votes
1
answer
235
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 ...
0
votes
1
answer
1k
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 ...
- 1,123
1
vote
1
answer
974
views
Black edge (NoData pixels) in Landsat 8 color correction in ERDAS
My boss asked me to mosaic and color-balance multiple Landsat 8 tiles for presentation. I tried to do that in ERDAS but it returned weird result as below:
Obviously it's the black edges or nodata ...
- 333
0
votes
0
answers
405
views
ORFEO vs ERDAS: How to extract a good DSM with ORFEO
I'm trying to use ORFEO to check is it suitable to replace ERDAS to perform DSM extraction from stereo pairs. First thing, I can't use ORFEO for complete Pleiades images, it always crashes (my machine ...
- 780
4
votes
3
answers
2k
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?
- 83
3
votes
1
answer
3k
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 ...
- 31
2
votes
1
answer
1k
views
Is possible to merge landsat 8 with High Resolution Satellite Imagery?
i have landsat8 and High Resolution Imagery (1m) in the same study area, is possible to merge them to get one imagery so that i can take advantage of the accuracy satellite imagery.
some_text http://...
- 1,123
1
vote
0
answers
83
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?
...
- 9
0
votes
0
answers
56
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 ...
- 579
0
votes
1
answer
596
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.
- 49
2
votes
1
answer
2k
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 ...
- 31
1
vote
0
answers
170
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, ...
1
vote
0
answers
278
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 ...
- 11
1
vote
1
answer
468
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 ...
- 105
1
vote
2
answers
1k
views
land Use land cover classification [closed]
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 ...
2
votes
1
answer
2k
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?
- 105
0
votes
1
answer
654
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.
- 1
2
votes
2
answers
2k
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 ...
- 2,131
1
vote
0
answers
441
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 ...
- 11
1
vote
0
answers
667
views
Layer Stacking landsat 5 surface reflectance high level data [closed]
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 ...
- 11
2
votes
1
answer
2k
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.
What is my next step?
I imagine I ...
- 21
2
votes
1
answer
2k
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?...
- 21
2
votes
0
answers
436
views
Large Rasters in ArcGIS & MapInfo [closed]
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 ...
- 1,169
1
vote
1
answer
733
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 ...
- 4,139
2
votes
1
answer
2k
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....
- 4,139
1
vote
1
answer
165
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 ...
- 695
1
vote
2
answers
1k
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 isn'...
- 11
2
votes
0
answers
293
views
Oriented stereopair in ERDAS [closed]
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 ...
- 41
0
votes
2
answers
190
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 ...
- 61
1
vote
1
answer
720
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?
- 105
1
vote
0
answers
70
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 ...
- 11
1
vote
2
answers
2k
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 ...
- 51
1
vote
0
answers
115
views
Can I use a signature for more than one picture?
I want to use the signature from one picture and use it in other. Can I do this using ERDAS Imagine?
- 11
0
votes
1
answer
1k
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 ...
0
votes
1
answer
3k
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 ...
- 119
9
votes
1
answer
523
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 ...
- 91
2
votes
0
answers
274
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 ...
- 81
10
votes
3
answers
6k
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(...
- 3,386
0
votes
3
answers
630
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
1
answer
508
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 ...
- 23
1
vote
0
answers
81
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.
1
vote
1
answer
947
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 ...
- 21
1
vote
1
answer
351
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 ...
- 1,482
4
votes
1
answer
396
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/...
- 773
2
votes
0
answers
238
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 ...
- 21
2
votes
0
answers
922
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. ...
- 21
2
votes
0
answers
431
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 ...
- 21
1
vote
1
answer
495
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.
- 843