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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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1answer
1k views

“Display Background value ”0“ raster”

While publish raster layer in geoserver it shows background as black. How to remove the black color. if there is any options to permanently remove the black color.
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0answers
22 views

What is your evaluation of (ERDAS, ENVI,Geomatica &eCognition ) regarding Digital Image processing and remote sensing Application? [closed]

I am on a task of evaluation the following software in term of its functionality , performance and training availability in the internet. I am concerning on: ERDAS ENVI GEOMATICA- PCI eCognition ...
0
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1answer
52 views

Pleiades atmospheric correction

I have phr1a and phr1b images (Pleiades) and I need to make atmospheric correction. First, I tried to do this by using Envi FLAASH. by the way, I tried also ERDAS atcor but there was also same ...
0
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1answer
56 views

ECW not reocgnized as supported file format in GDAL operation

I've installed QGIS 3.6 for MAC, with GDAL 2.4, ECW GDAL Plugin for GDAL 2.4, and manually installed the libraries from ERDAS ECWJP2SDK 5.4. This allows me to insert ECW files as raster layers in ...
3
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5answers
6k 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 ...
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0answers
14 views

Atmospheric correction using ERDAS 2014

There are some questions about atmospheric correction using ERDAS. Is it possible to use the atmospheric corrected satellite image to calculate NDVI and LST using ATCOR of ERDAS? If not, I wonder if ...
0
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1answer
30 views

Extracting DEM from PRISM data?

I have PRISM data which is in the following format. Are there any ways (software and methods) to extract the DEM or elevation information from these data files?
3
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2answers
12k views

Creating NDVI from multispectral imagery?

I have LISS IV image data in three bands (band4, band3 and band2). I wanted to know the required steps to obtain the NDVI image from the given data using ERDAS IMAGINE 9.2.
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1answer
43 views

Data type doesn't match error in Sieve filter

I classified some land cover types in aerial image with Erdas Imagine, now I want to remove classification errors showing very small areas. I tried to use Sieve filter, but getting error notification "...
2
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1answer
194 views

Assigning signatures in Erdas Imagine 2016

I am having a problem in creating new signatures in Signature Editor in ERDAS 2016. Whenever I click on the icon to add signatures a pallette pops up that says: "ERROR GETTING AOI FROM VIEWER, USE ...
2
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1answer
1k views

Using 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 ...
2
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1answer
631 views

Accuracy assessment in Erdas imagine

Is it necessary to do an accuracy assessment for an unsupervised classification done for a Landsat 5 image?
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1answer
250 views

Aligning imagery in ERDAS Imagine?

I have two Imagine files that I need to mosaic. When I added these two in Erdas Imagine, there is a black gap between them, for example, they are not properly aligned. I know very little bit about ...
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0answers
51 views

Unsupervised classification in ERDAS imagine

I am trying to make a classification to run some index ( like NDVI) to see the change over time using the image difference function. Is it possible to do an unsupervised classification on one image ...
2
votes
1answer
28 views

ERDAS Imagine signature picker colour changing RGB numbers?

I've noticed something with the signature picker in ERDAS and I was wondering if it is a bug or a feature. When I create classes I assign a colour to make them easily readable in the classified ...
3
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1answer
2k 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 ...
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0answers
28 views

Reprojecting a SHP in QGIS to used it in ERDAS

I´m trying to created a AOI in ERDAS with a shapefile, but this shapefile had a projected system different to system that my image has, because of that I changed the projected system of the shp in ...
1
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1answer
36 views

Masking an image in Erdas using Thematic Image, the mask comes out looking wrong and completely different than input image

I am trying to mask out shadows and clouds in a WV2 8-band image. I classified an image to identify the shadows and clouds and then using the mask took in erdas used the classified image to mask out ...
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2answers
422 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 ...
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2answers
82 views

Projection shapefile

I created a shapefile of Sundarban area Bangladesh. Here it is: Here is the projection information about it: I want this shapefile to project upon an image which is here [I downloaded it from ...
1
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1answer
51 views

Smooth mosaicking of smaller orthomosaics to form a homogenous mosaic

This image below is generated using Erdas Imagine where I used mosaicpro tool to create a super mosaic of orthomosaics generated using PIX4d I used following options: Color Balancing Color Dodging ...
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1answer
46 views

Histograms in Erdas Imagine staying grey

When I open the metadata in Erdas Imagine 2016 of a raster file (I tried several different raster files) the histogram at the histogram button stays grey. I already tried to change the setting of NAs ...
0
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1answer
470 views

How to work on histograms in ERDAS Imagine?

Is there a possibility to work on histograms in ERDAS Imagine? For example: Compare histograms of different images or different extents Shift them or find patterns I thought there must be good ...
1
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1answer
150 views

single feature probability in ERDAS object-oriented classification

I'm using ERDAS for my UAV image classification (consists 6 land cover types) and I performed the first step of Object-oriented classification, Single Feature Probability (SFP). It outputted a ...
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0answers
37 views

Set multiple values to nodata - Erdas Imagine 2015

I am having trouble with the data ranges in the Landsat 8 surface reflectance product which I downloaded from USGS. The Lansat 8 surface reflectance handbook says the valid range is 0 - 10,000 range ...
1
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1answer
234 views

How to make subset from satellite images without getting empty border?

I have Landsat 5-8 images, and after creating subset for the area of interest there is an empty border on the image as black part. How to remove it or how to create subset without it? Here is the view ...
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1answer
132 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?
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0answers
184 views

There are no valid signatures for selected decision rules

I am trying to perform a supervised classification in erdas and currently this is how my signature file looks like. My image has 4 bands. When I try to run the classification, I get the following ...
3
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1answer
332 views

Define vector projection and reproject shapefile in ERDAS IMAGINE 2013?

I come from a GIS background mainly using ArcMap and QGIS, but am now doing more image processing work and so have decided to start using ERDAS IMAGINE 2013. I am attempting to project a shapefile ...
1
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1answer
863 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
127 views

Masking out cloud cover

How to mask out cloud cover in a LISS 3 image using Erdas Imagine? I did not find the appropriate tool for masking clouds in an image in the Erdas imagine environment.
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0answers
53 views

Editing Imagine raster attribute table using arcpy and having edits remain when viewed in ERDAS Imagine

How can one alter the attribute table of an Imagine raster using arcpy and have the updates remain when viewed in ERDAS Imagine? I am trying to use arcpy to automate a series of steps that ...
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2answers
500 views

Analysing Landsat images using ERDAS IMAGINE and ArcGIS

I am trying to use the Theil-Sen analysis on the Landsat images to compute vegetation indices, help me figure out how to come up with the median from the Theil-Sen equation in ArcGIS, ERDAS IMAGINE or ...
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0answers
42 views

Vector-Viewing Properties on Multipoint Geometric Correction in Erdas Imagine 2014?

I am following some old instructions that are not up to date with my latest version of Erdas Imagine. Where can I find the Vector viewing properties within the Multipoint Geometric Viewer? The ...
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1answer
41 views

Where can I find the viewing properties on ERDAS?

The instructions state to click on vector and then viewing properties yet I cannot find the viewing properties. When I click on vector in the main menu there is no option for viewing properties.
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2answers
583 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'...
3
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2answers
915 views

Reduce the resolution of satellite imagery data for use in MATLAB

When I am using the 4-band multi-spectral 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 ...
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2answers
1k views

Convert ERDAS Imagine AOI to Shapefile

I was trying to convert a very simple Erdas Imagine AOI file (its a single polygon) into a shapefile and was mostly finding documentation on the inverse (SHP to AOI). I was trying to follow the steps ...
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0answers
255 views

landsat 8 images in ERDAS imagine 2014 is not mosaicking properly

I am trying to merge all 4 landsat 8 images in order to create land use land cover map, but its not merging properly.I layerstacked this images before merging. Should i download landsat images which ...
1
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1answer
125 views

Erdas Er Mapper: Annotation vector layer to Shapefile

I mapped some lines on Er Mapper 2014 with the Annotation tool (Add vector layer > Annotation/Map composition), so these lines are georeferenced and they got a specific width and colour. I saved ...
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1answer
2k views

MODIS MOD13Q1 ndvi calculation

i have downloaded the modis MOD13Q1 from usgs glovis in hdf format. how i will convert it into original ndvi value by multiplying scale factor of 0.0001. I am using ERDAS 9.1 & ENVI 4.7. Can you ...
0
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1answer
651 views

Doing supervised classification for images on ERDAS?

i want to do a supervised classification for images on ERDAS, using GIS, i clipped the areas i want to use as training/signature from the original images. but i just can't create a signature file, ...
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2answers
166 views

What Geometric model can I use for the old black and white aerial imagery?

I am working a lot of aerial photos that are very old and were scanned by a contractor. The flight were taken and snapshot over the national forest. The aerial photos are not georeference. I am going ...
1
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1answer
124 views

Using Hybrid Classification? [closed]

I'm new to this field of study. my teacher ask me to do a hybrid MLC and ISODATA classification for my bachelor thesis. so I got one journal that combine both method, but I think it too complex for ...
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0answers
29 views

Image displays in 3 RGB stripes across the surface

I layerstacked the Image in the screenshot above, but it is displaying in 3 stripes of RGB. Anyone who knows what the problem could be?
7
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1answer
1k views

How can I change the class of one pixel in a classified image?

I have a classified image (I did it in ERDAS) with six categories. There are some misclassified pixels (especially high-density urban category). Is there any way that I can choose one pixel and then ...
3
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0answers
159 views

Extracting cells from raster by attribute in ERDAS Imagine

I have a raster file that gives me the slope of all the hills and mountains in an area in degrees (0-90) and I need to extract all the cells which are >= 45 with an operator in the model builder. I ...
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1answer
352 views

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 using ERDAS Imagine 2013?
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0answers
649 views

Conversion problem of projection of MODIS LAI from sinusoidal to geographic

I am trying to change MODIS data's (LAI) sinusoidal projection to geographic. Actually I did it. But when I reproject it by ERDAS, the output LAI raster moved about 10 km to west side of actual ...
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0answers
257 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 ...