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

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2answers
45 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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0answers
10 views

erdas model maker [on hold]

I am doing my masters in geoinformatics. My thesis topic is MODELING OF SPATIAL OBJECTS FOR LAND COVER CLASSIFICATION USING FUZZY TOPOLOGY. I need to calculate a measure of the distance of a pixel ...
2
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2answers
43 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[] <- ...
4
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2answers
106 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: ...
2
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2answers
211 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 ...
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4answers
71 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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3answers
1k views

Atmospheric correction for Landsat 8 in ERDAS?

I am attempting to run some classification on Landsat 8 imagery, however, I need to perform atmospheric correction on the images in order to reveal true spectral signatures. I am using ERDAS, and the ...
1
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0answers
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
966 views

Running ERDAS Imagine and ArcGIS Desktop on same machine? [closed]

ArcGIS Desktop 10 and ERDAS 8.7 were already installed in my computer. But I want to open both programs at the same time. If ArcGIS can open properly, ERDAS cann't open and vice verse, showed that ...
1
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1answer
28 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 ...
2
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1answer
83 views

Possible to use same signature file to classify images from different years?

I have Landsat images for the same area over 20 years (one photo per year in same season). I would like to detect changes occured in forested area like clear-cut and bark beetle outbreak over time. I ...
1
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1answer
26 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
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1answer
190 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
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0answers
37 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 ...
1
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0answers
28 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. ...
0
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0answers
29 views

Why could imagery lose radiometric resolution after orthoresampling in ERDAS Photogrammetry

I have some issues with orthoresampling images in ERDAS Photogrammetry (formerly LPS). I've set up two different image blocks (including orientation and camera paramters) and created multiple digital ...
1
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0answers
31 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 ...
3
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2answers
5k views

Replacing Raster Values in Ras1 with Ras2

I have two rasters Ras1 and Ras2. I want to change the Ras1. In Ras1, there are few areas, lines, points I am interested having nodata cells and wrong data cells.(limited to interested areas only ...
1
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1answer
37 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.
0
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1answer
30 views

How can we 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? If possible how can we use ERDAS Imagine ...
1
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1answer
109 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 ...
1
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0answers
41 views

What is the Pro or Cons for mosaic 30 GB jp2000?

Has anyone tried mosaic jp2000 imagery in ERDAS, ArcGIS , ENVI or any softwares that they have accomplished ? I have three jp2000 files that is total about 28.1 GB that I want to mosaic with ?
1
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1answer
31 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.
6
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5answers
1k views

Georeferencing aerial photos when only centroid is known using ArcGIS for Desktop or ERDAS Imagine?

I have heaps of aerial photos that need to be georeferenced. I have access to ArcMap and ERDAS. All I am given is an excel sheet with the centroid coordinates of each image. Each photo covers ...
4
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1answer
1k 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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0answers
33 views

Image and Aoi files have different map info. Aborting…ERDAS

I have an image 03.img and I want to apply Sub pixel classification on it. Since the image is rather big, I first clipped it with an AOI file (converted from a shape file). Next I applied ...
7
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5answers
3k views

How to workaround large mosaic process which is failing?

I need to mosaic about 550Gb of tif imagery together and the software I have tried keeps failing. The area has been split into zones so that the smallest has approx 200 tiles. I have used the latest ...
6
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1answer
416 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, ...
1
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2answers
443 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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0answers
17 views

/1.#IND error in ERDAS

I was applying the vegetation index ($n1_ttc0003r_16(2) - $n1_ttc0003r_16(4)) / ($n1_ttc0003r_16(2) + $n1_ttc0003r_16(4)) to a multispectral image, and the raster resulting on this operation had all ...
1
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0answers
42 views

Retrieving Aerosol Optical Depth (AOT) from Landsat multispectral data

I need to retrieve Aerosol Optical Depth from Landsat multispectral datasets. Has anyone successfully tried something like that before?
0
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0answers
43 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 ...
3
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1answer
54 views

1m cell size equivalent value in decimal degree

I'm doing re-sampling pixel size in ERDAS 2014,I'm using input image(Indian terrain) in GCS_WGS_84 projection. Now I have to keep out put cell size as 1m,what is the 1m equvivalent value in Decimal ...
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0answers
47 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 ...
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0answers
222 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 ...
1
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0answers
8 views

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.
1
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0answers
191 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 ...
1
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1answer
96 views

Could not open/read USGS raster file

I could not open/read the following .img file. The document below says it is a raster file. http://edc2.usgs.gov/1KM/land_sea_mask.php I tried to open it using many ways such as Q-Gis software, and ...
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0answers
52 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 ...
2
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1answer
36 views

same RMS error for different resolution data

if i rectify a low resolution data and high resolution data and both have same RMS error =1 then what would be rectify more accurately? means for which resolution this error is more acceptable ...
1
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1answer
53 views

Enabling Erdas ECW files in gdal

I want to enable read support from Erdas ECW files in gdal on windows. I have GDAL binaries from http://www.gisinternals.com/sdk/ and i also have a self compiled version. when compiling myself I ...
2
votes
1answer
55 views

How to derive the slope angle value from DEM?

I am trying to calculate the steepness of each pixels (30m) from the DEM of 2m resolution. I have made use of ERDAS Imagine - Slope function and returns a contour-like pixel image. The pixel value ...
0
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0answers
17 views

How to mosaic lots of TIF files [duplicate]

I have 550 piece of .Tif fil files. I need to mosaic them. I tried QGIS, ERDAS and ArcGIS but they crashed everytime. In Erdas Tif's stored only 4GB limit of size. Which solution can be useful for me ...
1
vote
1answer
47 views

Extraction of pixels from layerstacked NDVI image

How do I get rice pixels only from layerstack NDVI (modis) or SASI image? I also have a thematic rice image Please tell me how to do in erdas.
4
votes
1answer
117 views

Stereo Analyst & ArcGIS 10.1 - volume calculation

I use to perform analysis and imagery exploitation with the software above. I have created a Stereo Analyst report with some 3d polygon by a stereoscopic block. How do I calculate the volume of some ...
0
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2answers
216 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 ...
0
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0answers
70 views

PALSAR 50m Orthorectified K & C Mosaic it's possible to create interferometry?

JAXA is providing free access to PALSAR 50m Orthorectified K & C Mosaic. According to the website, data are provided in raw (HDR) and png. ALOS PALSAR K&C Mosaic or New global 50m-resolution ...
2
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0answers
21 views

How to overlay Radiance (Top-of Atmospheric radiance) over Digital Numbers Image?

I am trying to process INSAT-3D images, which contain six different bands. I have to extract each and every band form the .h5 data file, so when I extract first band (MIR) band form the data set, I ...
2
votes
2answers
153 views

How to match colours in already mosaiced single image?

I have an already mosaiced image for a large area. I need to match colours in this single image. I do not have each image separately. I just have this large single image downloaded from GLS. How can I ...
1
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1answer
63 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. ...