Questions tagged [erdas-imagine]

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

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163 views

Editing classified image raster in ArcGIS Desktop?

I have an unsupervised classification dataset of a SPOT 6 image created in ERDAS IMAGINE and I now want to edit the class names in ArcGIS Desktop 10.2. I have done this successfully for a number of ...
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1answer
190 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 ...
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114 views

Attribute table shows histogram/pixel count for a thematic raster image, but on enquiring, every pixel's value is zero

I have a thematic raster image containing 18 land use classes (like built-up, water bodies, plantations, forest, etc.). When I display this image in a GIS application (Arcmap/Erdas IMAGINE), the map ...
2
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1answer
954 views

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

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
729 views

Classified image color in Erdas Imagine

I've a ArcMap classified image in tiff format. I want to open it in Erdas for further Accuracy assessment. How to open the image in Erdas with same color ramp as it is given after classification?
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3answers
1k 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?
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0answers
31 views

Performing basic raster to shapefile conversion? [closed]

I am a novice when it comes to GIS. I am currently trying to use ERDAS imagine to classify habitat types using landsat 8 images. I'm able to run a supervised classification with the product being a ...
5
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2answers
98 views

Knowing the pixel size for a raster before it was resampled

Is there a method to know the exact pixel size (the original size) of a raster “aerial photo”? I have purchased an Arial photo with 10 cm pixel size resolution, and I received a sample of it, but ...
3
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2answers
266 views

Exporting Sentinel-2A imagery from QGIS to ERDAS Imagine 2013

I have downloaded a Sentinel-2 image and loaded the 10m bands from the .xml file in QGIS which works fine. I simply want to open the image in Erdas Imagine for use in accuracy assessment in a true ...
3
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3answers
2k views

Matching colours in already mosaiced single image? [closed]

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 ...
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2answers
8k views

Layer stacking Sentinel 2 imagery

Is it possible to layer stack all 13 Sentinel 2 bands or can I only layer stack those that are the same resolution (so for example the blue, green red and NIR bands). I have a very large area of ...
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1answer
1k 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 ...
9
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1answer
418 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 ...
5
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1answer
1k views

Setting “REAL” work/scratch workspace in ESRI/ERDAS etc

I thought the issue was only in ARCGIS but it seems that ERDAS does the same thing. I have my C with 1.7TB and my D with 10TB and my scratch set to d:\scratch but still ERDAS (and ESRI) fills my ...
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0answers
78 views

Atmospheric correction in ENVI, export to ERDAS

I am working on a project using Hyperspectral imagery and have ERDAS Imagine on my home PC and have access to ENVI on another PC at University. Is it possible, for example, to perform the atmospheric ...
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0answers
59 views

Make Chessboard stack Image

I am learning some literature of works and came across a beautiful representation of image in chessboard form. That misaligned is not my current concern. We are group of bachelor students and are ...
2
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2answers
734 views

GDAL, Python, pyramids/statistics read/write

As I work through learning programing with raster imagery, I am trying to read in a raster, change the pixel values and write the output file. Below is the code. I have blocked out the change pixel ...
0
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1answer
977 views

Change raster value manually

I am working with elevation data layer. I need to change a few of the pixel values of a raster layer manually. I use ArcGIS, ERDAS, QGIS. Few of the pixel values were deviated widely than its ...
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0answers
337 views

How to do topographic correction of Landsat 8 image in ERDAS?

I am trying to perform a topographic correction of a Landsat 8 image using the C method described in the paper below. I am doing this in ERDAS IMAGINE Spatial Modeler. However, I am not sure how to ...
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0answers
207 views

How to download whole ECW or JPG tiles from web viewer?

I've found an online server which has some aerial tiles I'd like to save at maximal resolution for offline use, I'd even be happy with just the whole JPG picture to be later georeferenced again by ...
5
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1answer
373 views

Using original Landsat multispectral image or pan-sharpened image in land cover classification?

I am currently creating land cover maps of a number of national parks across Asia from Landsat 8 imagery and also later from SPOT imagery. I plan to use supervised classifications in ERDAS IMAGINE and ...
2
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3answers
170 views

How to assign mean values from different windows sizes to point feature?

I have points overlaid on an elevation raster as shown below; The aim is to get mean value of each point computed from 3x3 window size covering its immediate neighbouring pixels. It will be ...
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2answers
122 views

Mask raster cells within only

I am using the Extract by Mask tool in ArcGIS. The tool is extracting all the cell that intersect the masking layer. Is there a process to mask only the cells that fall completely within the making ...
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2answers
921 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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1answer
437 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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0answers
67 views

Mosaicking landsat imagery before LULC classification

I have to perform change detection of several years for Central Indian Landscape. I have corrected the atmospheric aberrations of the Landsat 8 imageries using the semi-automatic classification plugin ...
1
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1answer
261 views

Accuracy Assessment in Erdas Imagine 2015

I'm trying to achieve accuracy assessment in Erdas, but I've faced some difficulties due to my lack of knowledge about it. I've finished an object based classification in eCognition, but whenever I ...
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1answer
664 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
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1answer
128 views

How to keep the georeferencing data from ArcGIS when importing rasters into Erdas imagine?

I have a bunch of WWII Aerial images that I georeferenced in ArcMap and when I load them in Imagine they are being displayed as plain rasters. I tried the Import Data tool, converted the georeferenced ...
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0answers
85 views

Classification during DEM generation for Bare Earth Surface-ERDAS

I am using ERDAS photogammetry tools(eATE) to generate a bare earth type DEM from two Pleiades satellite images(pan-sharpened 0.5 cm resolution). I have run the process and the results were just OK. ...
2
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0answers
62 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
183 views

Error when converting shapefile to .dxf

I have created a polygon shapefile in Erdas Imagine 9.2 from a raster image. I want to export it to .dxf or .dgn for further processing. When I export the .shp to .dxf in Global Mapper, large polygons ...
2
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1answer
476 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 ...
2
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0answers
87 views

Improving FLAASH atmospheric correction to accurately represent subtle features in a target's spectral profile?

I am attempting to use ERDAS target detection models to detect/differentiate a specific type of soil from a general background. We have gathered spectral signatures of the target soil in the field ...
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0answers
80 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?
6
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1answer
1k views

How to remove clouds in High resolution Imagery(.5 mGeoeye)

I have imagery with high resolution .5m, large parts covered with clouds, so it's obscure many urban areas. How can I remove the clouds?
2
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2answers
376 views

Shoreline identification using ERDAS 2011

How can we separate shoreline from shallow water sea and land area in a LISS 3 image using ERDAS 2011 software?
2
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0answers
383 views

ENVISAT ASAR .N1 file is not being opened by ERDAS IMAGINE 2011

I am not able to open ENVISAT ASAR .N1 file in ERDAS IMAGINE 2011. The software has direct read option for files of this format. Whenever I try to open the file, software closes automatically giving ...
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0answers
264 views

Negative values in DEM after mosaic? [closed]

I downloaded 2 1/3 arcsecond DEMs from the national map as .img files. First I ran the Mosaic to New Raster tool in Arcmap. The values of the first DEM are 49.0551 to 1111.13. The values for the ...
2
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0answers
186 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 ...
2
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1answer
1k 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 ...
1
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1answer
313 views

change spatial resolution

I have two types of image, one of them is a TRMM image with 0.25 degree cells and the other one is a MODIS image with 1 km spatial resolution. How can I change my TRMM image resolution to 1 km ...
2
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0answers
199 views

Erdas 2014 process time signature editor supervised classification

I am currently using erdas imagine 2014 with 64bit OS. Basic configurations of my computer are; i7 3820 3.60 GHz CPU, 16 GB memory (RAM), gforce GTX 680 SLI 256 bit Graphic card ( 2GPU ), 250 GB ssd. ...
2
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0answers
48 views

Erdas LPS : how to rename points_ID values?

I'm working with ERDAS LPS 2014, i would like edit the name given for my GCPs and TPs (add the following suffix : "_w"). I tried to do that using the "formula" menu... in vain. I did not find a ...
2
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1answer
1k 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?
1
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0answers
498 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 ...
5
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2answers
2k 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?
6
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4answers
4k views

Seeking alternative to ERDAS Imagine? [closed]

I am having trouble with the ArcGIS 10.1 and ERDAS Imagine 9.2 license conflict. From what I found out it isn't that rare, but I do not understand why there such a conflict in the first place. ...
1
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2answers
208 views

Activating swipe tool in ERDAS imagine?

I am having a problem trying to enable (activate) the swipe tool in ERDAS imagine. I used to use it but due to some reason the tool is deactivated. Is there a way?
3
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0answers
214 views

How to increase Compression Memory for ECW Opacity Builder

I am attempting to build opacity within an ECW file using ECW_Opacity_Builder.exe from APOLLO Essential Utilities 2014, which has worked flawlessly many times before. When attempting to build opacity ...