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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Do Digital numbers come in units? If so, where do I look for them? [closed]
I recently did a Ratio image with Iron Oxide as an index and was then asked what units the Digital Number values are in the Ratio Image. I'm not sure where to look. Is it the LUT (Look up table)? the ...
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What does the metadata tell you about an image and its sensor?
I'm using a software called ERDAS and my tutor says that the Metadata can be used to detect which sensor your image came from. Is there anything you can tell me that links the metadata to the sensor?
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Merging Subswaths with ERDAS Imagine
Does anyone have experience with merging subswaths of a SLC Sentinel 1 image in ERDAS Imagine? I cannot find the right function for it.
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Using `ERDAS IMG` in `Raster Calculator` Fails
I recently used a ERDAS IMG raster layer in a calculation with the Raster Calculator. Figure 1 shows the original image and Figure 2 shows how I am using the Raster Calculator to "duplicate" ...
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Opening images layer stacked on ArcMap into ERDAS
I noticed that ArcMap can open almost anything but if I do a band combination or a supervised or unsupervised classification on ArcMap I cannot open it on ERDAS.
Is there a way around it?
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Most efficient way to perform rastercalculations with GeoTIFF and/or ErdasImagine files greater than 100gb
I have many GeoTIFFs ranging from 50-300gb and expect I'll have some even larger in the near future. I running a simple subtraction on a pair 77gb 1-band files, but I will also have similar 6-band ...
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Unsupported compression type in ERDAS imagine Software
Am trying to load a Landsat band but I keep getting the error of unsupported compression type, what might be the problem?
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Doing Layer stack in ERDAS Imagine
I am trying to do "Layer Stack" of Landsat 5 Surface Reflectance image in ERDAS Imagine 2015 but every time i get output as black and white image. Though pixels have RGB values but still ...
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How can I match the colors between the subset and the original image?
I have test subset using an AOI, and I have unchecked the "Ignore zeros in stats." option in the subset dialogue box. The difference in colors may have been cause by the histogram re-...
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Supervised classification in parts
I have an image from 1990 (res 30m, also clouds) for an area equal 2100km2 and when I performed the supervised classification, the software (ERDAS) confuses the classes that look similar. Is it ...
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Using ERDAS Imagine 2020 orthophotos
I am dealing with how to figure it out how to export an orthomosaic from my Agisoft Metashape because when I did the merge chunks there. When you merge there, it doesn't provide what I need because of ...
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Empirical Line Method (ELM) in ArcGIS Pro [closed]
My images from 2017, 2018, 2019 and 2020 from the same area, recorded in the same time of the year, all look different regarding colour brightness, likely caused by atmospheric circumstances. As I ...
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Is it possible to display a gray color GeoTIFF in ERDAS as it simply occurs in QGIS?
I have several GeoTIFFs (gray color) to be imported in ERDAS, however after googleing I could not find a way to display that color gradient as it occurs in QGIS.
Below the GeoTIFF displayed in QGIS:
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Do PNG files suffer performance for scaled read over ERDAS Imagine (.img) files?
So I have a 20 GB in size Raster Image in .img format. Though I will be examining the code, to find out why, I am AMAZED at how quickly QGIS renders the entire file in a scaled format, and prior to ...
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Need pros and cons of performing a GeoTIFF from ERDAS img conversion
I have a 20GB ERDAS IMG file that I need to incorporate into my project.
It's data covers the entire USA, indicating the thickness of satellite sensed tree canopy.
What image format would provide me ...
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Solving color correction of LISS IV Multispectral image
I have a LISS IV multispectral images (radiometric resolution of 10 bit per pixel) taken in different months 4 tile in January and 2 tiles taken in February.
While mosaicing, I got a different color ...
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Input image does not match with signature file in supervised classification
I have a issue in supervised classification on ERDAS IMAGINE. When ever I performed supervised classification it gives a warning message. It says:
iInput image does not match signature's image ...
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Image Dodging (color matching algorithm) in ERDAS
I have two LISS 3 images acquired in Feb and March a year apart. I have performed atmospheric correction (haze reduction) for both the images individually before applying the color matching algorithm ...
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Differences between imported Landsat-8 images in Erdas Imagine
What is the difference between the images created after importing with USGS Landsat 8 dialog, in particular, the suffixes _msi and _msitir? I understand that they stand for multispectral image and ...
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Layer stacking Multispectral reflectance imagery in ERDAS Imagine 2016
I have Green, red, Red edge and Near infra-red reflectance maps captured with a Parrot Sequoia camera and post processed with Pix4D.
They are all Single Float Tiff files, around 500Mb in size.
I ...
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Why does a raster that consists of 3 bands appear greyed out?
I have a raster that is formed by stacking the bands blue, green and red of "Landsat 8", when it is displayed on Erdas Imagine 2015 it appears as if there is a semi-transparent grey layer over it, the ...
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Preparing two images with different dimensions to use in Agisoft PhotoScan
I have two aerial photos that are flowed over the national forest. The photos were scanned by a contractor and they came in various dimensions for each photos.
The one I have had smaller dimension ...
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ERDAS mosaicPro from 2D view reference layer is not displayed on top
I am having an issue using the ERDAS mosaicPro from 2D view tool. I am using ERDAS 2015. I have two separate Landsat 8 file bands. Band 1 from one date and Band 1 from another date. I have ran the ...
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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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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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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 ...
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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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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 ...
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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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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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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 ...
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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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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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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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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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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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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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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 ...
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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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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 ...
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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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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?
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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 ...
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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 ...
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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 ...
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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 ...
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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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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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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 ...
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