Tagged Questions

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

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1
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0answers
87 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?
0
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0answers
52 views

Layer stacking in ERDAS?

When I am doing layer stacking of the liss iv image and ndvi generated from the same image, the output generated is white (flat) in ERDAS Imagine. How to solve the problem?
2
votes
0answers
87 views

Why image do not color match when many Landsat images are mosaicked in ERDAS?

When I try to mosaic Landsat images in ERDAS I get as result image with discordance in colors. I tried histogram matching but no success. The images were captured between March and May.
1
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0answers
186 views

Use a Python script to stack layers from multiple directories and produce multiple outputs in ERDAS

I am using ERDAS Imagine 2013 and am trying to create a Python script that takes lists created in another script containing the path to each scene's raw data folder and base image ID's (for example ...
0
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1answer
26 views

Which format is more convenient to publish in Erdas Apollo?

I am from Bolivia and I need to publish some Satellite images in Erdas Apollo. My question is Which format is more convenient for publish in this software?, because I have Landsat5 TM images in TIFF ...
1
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0answers
22 views

Determine sun elevation without header file?

I have some AWiFS and LISS-III data that I'm trying to convert from at-sensor spectral radiance to top-of-atmosphere reflectance. The problem is, the data didn't come with any header file. All I ...
5
votes
1answer
250 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, ...
0
votes
1answer
53 views

Running Erdas command in MS-DOS

I have generated the following command line in ERDAS, and want to run it in MS-DOS. Getting an error- "system cannot find the path specified". I have checked the path by opening it in windows ...
1
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0answers
22 views

Which georeferencing method for Himalayan Awifs-Awifs registration

I would like to know which georeferencing method would provide the best result for Himalayan region in-case of Awifs(Raw) to Awifs(master) georeferencing.. I have already tried polynomial ...
1
vote
1answer
52 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). ...
2
votes
2answers
303 views

Digital Number (DN) on satellite imagery? [closed]

How would I know if any of the satellite imagery (Landsat, ASTER, Quickbird and so on) have DN or Digital Numbers such as integer or uninteger on its pixel. I download from the USGS EarthExplorer and ...
0
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0answers
24 views

GeoEyes stereo Image

We have 4 stereo GeoEyes images. We work with ErdasImagine 2014 when we generate a blk file after reading the images we see this error: "Unsupported Compression type". Please help us. Best Regards
0
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0answers
84 views

MODIS MOD09A1 processing

modis state flag for MOD09A1 data (Surface Reflectance 8-Day L3 Global 500m) is different for each 8 day composite. I have 10 years data how to extract the cloud information in batch? and is their any ...
1
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4answers
899 views

Creating a Time series NDVI map

I would like to create a NDVI Time Series map? How do I do that? The one I probably would like to have similar like this http://proceedings.esri.com/library/userconf/proc02/pap0593/p05931.jpg I ...
-1
votes
1answer
127 views

How to export raster value into excel or ASCII [duplicate]

I'd like to get all pixel values of time series NDVI image to find regression coefficient to smooth the abnormal NDVI value through the time. So that firstly, I want to export values of raster into ...
0
votes
1answer
59 views

Is there any method to choose the value of each pixel according to land cover

I have 2 images; one is land cover image (imgA) and monthly mean temperature image (imgB). I'd like to choose value of each pixel from imgB corresponding to imgA. WhaT I expected is each pixel of ...
0
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0answers
50 views

What does “unsupported bin funcion type” error in ERDAS mean?

I want to open a set of .img files in ERDAS which are output files of zonal statistic function in ARCGIS. Before running the function, all images can be opened in ERDAS. After calculating zonal mean, ...
-1
votes
4answers
98 views

Why does ASTER created -0 to 0 instead of -1 to 1? [closed]

On my previous question on ASTER I need some more information on ASTER for time series analysis and I need to research on building NDVI because when I ran them for each ASTER. Most of them it came out ...
0
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0answers
71 views

ERDAS Imagine ecw compression settings

We have some jp2 or img satellite images that we compress to .ecw using ERDAS Imagine. We have realized that with some images we are losing too much information while doing that. What i wanted to ask ...
0
votes
1answer
77 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 ...
0
votes
1answer
10 views

Question about ERDAS TOC

On occasionally when I open a raster in ERDAS 2013, I get white or yellow circle icons on my ERDAS Contents and tried to find information on ERDAS. I want to know what does the icon mean ? Thanks ...
1
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0answers
150 views

Segmentation Image used to classify RGB image in ERDAS and GIS

My ERDAS 2013 does not have the advanced Image Objective Extension for feature extraction.. I am using thus the tool Image Segmentation (Unsupervised -> Image Segmentation) to classify my RGB image ...
1
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2answers
141 views

Where can i use a sieve filter?

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. Thank you
0
votes
1answer
354 views

Imagine files between ERDAS and ENVI

I have ENVI 5.0 , ERDAS 2013 SP2, and ArcGIS 10.1 SP1. Every time I save an Imagine file from ENVI 5.0 and open in ERDAS 2013 and it seems like ERDAS does not like it and it would not open and would ...
1
vote
1answer
552 views

Formula for Enhanced Vegetation Index (EVI) in ERDAS modelbuilder?

I am trying to derive Enhanced Vegetation Index (EVI)from Landsat 5 TM data using ERDAS model builder.d I can't seem to get the output I want as it comes out blank. This is the formula I used 2.5 ...
0
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0answers
78 views

ERDAS Imagine 2013 NDVI fail

i have a problem with NDVI in Erdas Imagine. Instead of NDVI image it makes a mask, which is not suppose to make. Do anyone know where the problem is?
1
vote
1answer
494 views

Converting ERDAS (*.img) file into headerless binary file?

I am having trouble converting an ERDAS (*.img) file into a headerless binary file. I want to use those images in the TIMESAT program. I'm trying to do this in IDRISI 32 but there is an error ...
1
vote
4answers
113 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
1answer
78 views

How to perform a standard deviation stretch on a raster in QGIS

Is there a way to perform a (2) standard deviations stretch on a raster image in QGIS 2.2? I have found the raster styles menu, but the help says there is no help in my language (English) and whilst ...
2
votes
1answer
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
vote
0answers
78 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 ...
0
votes
0answers
10 views

Erdas grids names to field names in tables renamed when saved

I am trying to use zonal stat on several imagine rasters and save values to a table with several automatically added fields that will have the same name of the corresponding raster, I can do it but ...
6
votes
3answers
543 views

Will Toshiba Satellite 70-A-11h meet GIS student notebook requirements?

I'm just about to start a college to study GIS and I need new notebook computer. I would like a one that will last me for awhile and that can run the ArcGIS and ERDAS Imagine programmes that are ...
1
vote
1answer
105 views

How can I choose values from stacked raster images according to location of ROI

Before I choosed ROI on land surface temperature (LST) images and obtained pixel values of LST. Now I need pixel value of another images which are stacked multi-band image. My main purpose is to ...
3
votes
4answers
269 views

Some remote sensing tutorials [closed]

I could use some tutorials on remote sensing, but some books provided they are free, would be useful. To be specific, tutorials on ERDAS Imagine, ENVI and other remote sensing software, general ...
0
votes
0answers
48 views

How to generate GML by extracting heights from DEM?

I am trying to generate GML using satellite images for geometries of various objects, and I propose to use DEM of the corresponding area in order to extract heights. I already have a piece of ...
4
votes
4answers
932 views

Alternatives for ERDAS Imagine

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 interestingly enough why is there such a conflict in the first place? ...
2
votes
2answers
145 views

How to copy/move Mosaic Dataset to another location?

On my previous question on Mosaic Dataset vs. ERDAS 2011 Is ERDAS 2011 or ArcGIS 10.1 best to use when mosaicking 100's of ECW image files?, I did research for a bit was wondering what happens if you ...
0
votes
0answers
121 views

Is ERDAS 2011 or ArcGIS 10.1 best to use when mosaicking 100's of ECW image files?

I have to perform hundreds of imagery files and they are in ECW files. They are 1 ft resolution and are in quarter quad and came from BLM but they are product by NGA. I wonder which software is the ...
1
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0answers
117 views

Uninstall ERDAS ECW/JP2 SDK Version 5.0 (Ubuntu)

I am using Ubuntu Linux as main OS when it comes to geoprocessing but I am not yet an expert using it. I recently needed QGIS to have ECW support, so I followed the instructions of Luke in the ...
0
votes
1answer
78 views

How to choose pixel values according to each land cover class?

I would like to do following steps using two types of images (precpitation and Land cover image): select pixel values of precipitation image within each land cover classes calculate total amount of ...
1
vote
1answer
53 views

How can I change the highest and lowest value of image?

I want to change the highest and the lowest value of raster image. I want it to have the highest value of 345 and the lowest of 0. The highest value of original image now is 265 and the lowest is ...
1
vote
1answer
704 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 ...
2
votes
1answer
62 views

can i merge resolution with float single data type

Can I merge resolution with both image is float single data type? I have done this, but the output image become white. Do the data type must be in unsigned-8 bit for the merge to be success?
3
votes
3answers
318 views

Where to obtain free 15m ASTER image for New Mexico?

I am looking for a free Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) image that will let me to perform NDVI for the pilot crop health/soil moisture that can go as far back ...
2
votes
2answers
117 views

How to reduce the resolution of satellite imagery data for use in MATLAB

When I am using the 4-band multispectral data for NDVI calculation, after successful completion of runtime, it shows some warning message like "Loading 17%..." How should I rectify it? Should I do ...
1
vote
0answers
111 views

Error when converting .shp to .dxf

I have created a polygon shape file 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 ...
1
vote
2answers
271 views

NoData Value = 0, problem when creating NDVI, Erdas

I try to create an NDVI from Landsat and ASTER satellite images using Erdas Imagine. In Erdas, the satellite images have a nodata value of 0. After creating an NDVI, the nodata value is still 0, but ...
0
votes
1answer
119 views

'erdas apollo how to enable this service'?

we have installed ERDAS Apollo, and open the welcome page and tell us " you've setup ERDAS APOLLO 2011, v11.0 successfully", but test Sample HTTP requests and got same error: eg: when test ...
-1
votes
1answer
138 views

Using Mosaicking Images in Erdas software

Do you know any dissertation which has written about Mosaic briefly? I did the Mosaic for my Landsat images but i want to explain and write about but i do not know how and what shall i write about it ...