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Geographic Information Systems

Questions tagged [erdas-imagine]

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

264 questions
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1answer
65 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 ...
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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
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 ...
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0answers
52 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
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1answer
29 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 ...
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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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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?
1
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1answer
52 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 ...
0
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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
482 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 ...
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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 ...
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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 ...
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0answers
130 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.
1
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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 ...
0
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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
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 ...
1
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0answers
259 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
126 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 ...
0
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2answers
167 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
127 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 ...
1
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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?
1
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1answer
119 views

Exporting many TIFFs issues in ERDAS Imagine 2016?

I have been having an issue with exporting TIFFs on my ERDAS Imagine 2016. The version is 16.00.0000 Build 650. When I need to run a batch to export many TIFFs and it would export one but then it ...
1
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0answers
104 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 ...
3
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1answer
333 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 ...
2
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1answer
196 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 ...
1
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1answer
581 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?
1
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1answer
239 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 ...
1
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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 ...
3
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2answers
241 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 ...
1
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0answers
69 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 ...
1
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0answers
57 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 ...
0
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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 ...
0
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2answers
507 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 ...
0
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1answer
793 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 ...
0
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0answers
312 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 ...
1
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0answers
181 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 ...
3
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3answers
156 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 ...
1
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2answers
104 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 ...
2
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2answers
648 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 ...
3
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0answers
160 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 ...
1
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0answers
65 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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0answers
155 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 ...
1
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1answer
238 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 ...
1
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0answers
79 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. ...
1
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1answer
117 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 ...
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 ...
2
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0answers
82 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 ...
5
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2answers
94 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 ...
1
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0answers
241 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 ...

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