Questions tagged [imagery]
Imagery refers to raster based datasets acquired from sensors on satellites or aircraft.
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Packaging multiple georeferenced drone images into single layer on map viewer ArcGIS Online [closed]
I'm in the process of fielding a new (at least to the industry I work in) technique that allows us to take drone photos of encroaching landowner(s) property, and provide them an image that accurately ...
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Free and open source solutions for raster data management [closed]
What are recommended ways to manage raster geodata using free and open source software?
Let's say I have a bunch of raster data (mainly orthophotos as GeoTIFFs) on my system. I want to manage these in ...
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Why the number of images are not same when using .size() command and by using 'Inspector' tool in GEE?
var tiles = ['42RUN'];
var ImageryCollection = ee.ImageCollection("COPERNICUS/S2_SR")
.select('B[2-8]', 'B8A', 'B11', 'B12')
.filter(ee.Filter.inList('MGRS_TILE', tiles))
.filterDate(...
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QGIS 3.30 & WMTS Imagery
A county in my area offers aerial imagery via WMTS. In the past I've been able to use this with ArcMap, but I no longer have an ArcMap license and would like to use it with QGIS. I can establish the ...
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Doubt about how to consult satellite images by year from the Google earth API [duplicate]
Is it possible to consult satellite images by year from the Google Earth API or check if there are satellite images available for 2023 in a specific country?
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Adding tiled imagery layers to ArcGIS Experience Builder
In Web AppBuilder I have a map/app with 11 feature layers and 5 tiled imagery layers that I'm trying to recreate in Experience Builder. I'm not trying to do anything fancy or complicated, I only need ...
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Tasseled Cap Transformation LANDSAT Collection 2
Are there any specific coefficients available for applying the Tasseled Cap Transformation to LANDSAT 5-8 Collection 2 data?
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What is the resolution of the best publicily available satellite images from the 1970s and 1980s, for the southern hemisphere?
What motivates the question is a neighborhood disagreement involving my parents, that developed as follows:
Dad bought a house in early 70s, moved there. The house was adjacent to a vacant lot, used ...
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Download individual tiles from image server in QGIS
I have a image server, which I successfully imported in QGIS using ArcGIS REST Service. Now I want to extract individual tiles from the raster layer. How can I do that in QGIS only?
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Removing dropped line using fourier transformation?
I've noticed a 'dropped line' in only one band of SPOT MS image, as seen similar to added example. By applying fourier transformation to the band in SAGA GIS, the dropped line can be clearly spotted ...
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I have an image of a map, I want to divide it into four squares and find the top left and bottom right coords of each piece
I have attempted this before using lat, long finder websites, however as they use a different map projection to mine (which is equarectangular) the coords are always a little bit off. Now, I can split ...
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Can you orthorectify further an image?
I was wondering if it is advisable to orthorectify (further) satellite imageries that already have orthorectification from the provider. The original DEM used by the provider is SRTM which is way too ...
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Computing vegetation indices using scikit-image: "Divide by zero" warning prevents Red Green Index calculation
I am attempting to locate all green pixels in an image by converting vegetative indices using the scikit-image module in python. However, when I try to compute the Red-Green index, I get the following ...
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Piece Wise Linear Mode in Erdas imagine not showing
I was visualizing images in ERDAS imagine 2015 and got this message while trying to use Piece wise linear mode, what might be the problem and how do I meet the conditions specified in the error ...
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Creating a layer showing difference before/after flood (raster)
I ran a supervised classification on two satellite images - (i) before and (ii) after a flood. Now even before the floods, there were pre-existing water bodies which obviously don't count as flooded ...
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Adding a layer to a map service without overwriting or republishing?
We host a map service with near-real-time satellite imagery. When we receive new image throughout the day, we currently use a script to add the .tif as a new layer and republish the service as quickly ...
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Map tiling service with more recent imagery
I am using MapBox for mapping in a SaaS product. I've noticed that some (all) of the imagery is older than what I would ideally want. Is there a way to upgrade to more up-to-date imagery into the ...
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Taking median or mean (pixel) for Soil Wetness index time series data
I have downloaded around 2100 raster files of Soil Wetness index raster derived using SMAP L-band Radiometer data, from 2015-2022 with 3 day composite update frequency
Data - https://www.mosdac.gov....
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Mapping Soil Sealing and Water Bodies
I am asked which bands of Landsat 9 (or 8) is best for mapping soil surface sealing and water bodies at higher resolution. The band available in Landsat 9 is as shown:-
From above band name; which ...
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How to use symbology to snowfall accumulation GeoTIFF
I haven't worked with raster data in a long time. I just downloaded the annual snowfall via GeoTIFF and import to ArcGIS Pro. Of course, it appeared in black and white. I am having trouble formatting ...
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1998 smoke imagery in Alaska
I am trying to access smoke/cloud imagery above the Alaska region during August of 1998. I would like to use GEE, but I haven't been able to find a dataset with good coverage. I have looked at Landsat ...
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Using QGIS Information tool on WMS Image Service
I'm new to QGIS but with decent ArcGIS experience.
I'm trying to use the information tool in QGIS to interrogate the date an image was taken from a WMS (https://spatial-img.information.qld.gov.au/...
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Iterate over raster images and mosaic images based on same dates using Model Builder
I am trying to mosaic images with same dates in a folder. As there are images with different dates in the folder
I have looped through the images with just SR_clip.tif extension using wildcard that I ...
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Projection best practices for applying ML to large scale Earth Observation imagery [closed]
I come from a data science background, rather than GIS, but work in a domain where remote-sensed imagery is widely used; so I'm still learning some of the do's & don'ts when it comes to the 'right'...
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Getting map data not yet available using ArcMap
I am using ArcMap.
When adding imagery basemap everything works ok, until map is zoomed at 1:800 scale, then the legend "Map data not available yet" appears, but in others PC it is possible ...
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Noisy lines in all scenes for Landsat 7?
I'm seeing patterned lines in all Landsat 7 images that clearly are image artifacts. There are lines that jet in from the edges (the center looks better) Does anyone know what it is and if there are ...
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Why are there no Sentinel-2 images in northern latitudes from November to January?
I have found that there are no Sentinel-2 images in northern latitudes from November through January (near 64.11837149, 67.75836280 coordinates).
Number of scenes around the point with coordinates 64....
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Adding HTTPS image URL in ArcGIS Explorer programmatically
I have .jp2 and .tif satellite images hosted in my IIS web server. I am trying to access those imagery in ArcGIS Explorer programmatically through VB.Net (without actually downloading the image in my ...
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Should my Landsat 8 Imagery be Looking this Dark?
I'm downloading daytime satellite imagery from Landsat 8 and am slightly concerned that I'm doing something wrong because the imagery is so dark.
This was a composite image of Indonesia I made:
In ...
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Scene of imagery is missing
Sorry, i want to ask why some of imagery scene of my "area" is missing
Here is the script
var geometry = ee.FeatureCollection(area);
Map.centerObject(geometry,7);
var center = {lon: 109....
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Adding metadata information to imagery in ArcGIS Pro
I am working with imagery in ArcGIS Pro 2.8, and the data is World View 3.
What I am trying to achieve is to use the Mensuration tools available under the mensuration sub-group in the imagery tab in ...
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Georeferencing from a set of points using lat and long
I have an image that is 2000x2000 pixels and I need to georeference the image using ArcGIS Pro. I have a text file with lat and long at various pixels:
469.4999917 -264.663705 0 E 73 N
504.0687029 -...
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Creating constant image of various values in Google Earth Engine [closed]
For general code debugging, I would like to run my code on a much smaller image that kind of mimics the real image to be processed. The reasons are two folds: one is to save computational time/...
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Understanding resolution of multispectral satellite imagery (EuroSAT)
I am trying to understand the data that is provided in EuroSAT : Land Use and Land Cover Classification with Sentinel-2. It is comprised of "Sentinel-2 satellite images covering 13 spectral bands ...
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Filter an ImageCollection by difference of two date properties
I have an image collection with two date properties: start and end. I would like to select only those images that are 30 days or more apart between the start and end date. I tried the following but ...
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How are map tiles created?
I have recently been diving into the world of maps and I got interested to know how map services work, like Google, Mapbox, Leaflet, Open Street Maps and many others. I was confused about the ...
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Landsat 8 Collection 2 (C2) Level 2 Science Product (L2SP)
I am exploring data sources for land surface temperatures (LST) for summer 2021. From Landsat 8 Collection 2 Surface Temperature (https://www.usgs.gov/core-science-systems/nli/landsat/landsat-...
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gdalwarp on County-wide mosaic or COG takes forever or seems to hang
I am creating Cloud Optimized GeoTIFFs using gdal from a folder of TIFF files in GDAL for an entire county. After creating a mosaic of these files (in EPSG:6551) using gdalbuildvrt I can create a COG ...
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Seeking free satellite imagery basemaps to be used in webapps with frequent updates
I am looking for satellite imagery base maps to be used in my web application. I have been using Google satellite base maps, but they are very old. I need something which has frequent updates, weekly ...
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Empirical Line Method (ELM) in ArcGIS Pro (2)
I am working with Remotely-sensed imagery (10x10cm) from the Netherlands.
My images from 2017, 2018, 2019 and 2020 from the same area, recorded in the same time of the year, all look different ...
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MBTiles to PostGIS
I have an MBTiles file /database containing aerial imagery.
Does any one out there know of a way to store a MBtiles database into a PostgreSQL/PostGIS database?
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Export Canvas extent inside QGIS at a 1m resolution GeoTIFF format
I am working with the "XYZ Tiles Google Earth" inside QGIS and I have an area of interest that is roughly a 2 nautical mile radius that I would like to export as a GeoTIFF with a 1m ...
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Conversion of UAV DN values to reflectance
My aim is to carry out fusion between Sentinel 2 and UAV images. Sentinel images are already converted to reflectance values but UAV images are in DN number format. How can I convert UAV DN values to ...
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ArcMap 10.7, Is it possible to mosaic rasters using a method that prioritizes rasters by the proximity to it OWN center?
I am working with older imagery that has been manually scanned, and as expected, the fidelity of the images is more reliable towards the centers of the images. There is a good deal of overlap in the ...
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Water color significantly different from different relative orbits?
I've been examining satellite imagery (Sentinel-2) and noticed that water can look significantly different in images from different relative orbits (seems to happen consistently for the examples below)...
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Fixing local orthorectification mismatches leading to small georeferencing errors?
My project uses good quality high resolution orthorectified imagery (from the government) as its reference base layer. I complement it for vegetation analysis with additional imagery from a different ...
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Should I always choose Sentinel-2 atmospheric-corrected imagery?
Sentinel-2 imagery is available in the default L1C form, or in the atmospheric-corrected L2A form.
I haven't been able to find a L1C - versus - L2A comparison that would provide the pros and cons of ...
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Can't upload raster file on PostGIS
I've been trying to upload my satellite imagery which is 1.5 GB to my PostgreSQL database, using the code below, the error for each command is stated below;
raster2pgsql -s 4326 -t auto -F -I -C -Y '....
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Automate making imagery index layer
I am wanting to come up with a way to speed up my Imagery Index layer.
To give you an overview I have about 500 imagery files. They cover extents all over Australia.
I am wanting to create a shapefile ...
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How to get whole image exported from Google Earth Engine?
I used the LANDSAT 8 TOA data to create an NDVI image. I want to export the image to my Drive. I have most of the code and it works, but I can't get the whole image in the export. It should cover the ...
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