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Questions tagged [imagery]

Imagery refers to raster based datasets acquired from sensors on satellites or aircraft.

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Comparing COG and other rasters, Do fast 'gets' mean display benefits? only when serving from cloud? or also when on network and local drives too? [closed]

The same image raster in 3 formats, TIF, COG, JP2. COG have fast GET. Is the fast 'get' represented in fast display when panning? Am I supposed to see COG out perform the others when: if all 3 are on ...
longtimelistener's user avatar
-1 votes
1 answer
57 views

Histogram matching high-res tiles to satellite image tiles

I have a 3-trillion pixel mosaic TIFF image made from 1-meter NAIP imagery. The NAIP imagery has significantly different values from area to area so seams are quite evident. I have a sentinel-2 TIFF ...
Jeshua Lacock's user avatar
0 votes
1 answer
43 views

Convert .tif to imagery layer

I'm trying to run this notebook in ArcGIS Pro: https://developers.arcgis.com/python/samples/count-cars-in-aerial-imagery-using-deep-learning/#:~:text=imagery%20%3D%20gis.content.search(%22aerial*%22) ...
Freestyle Season's user avatar
1 vote
1 answer
35 views

ArcGIS JS API RasterShaderReliefRenderer does not color full range of DEM elevation values

I have a DEM of the state of florida as an ImageService, here. I want to render this DEM using nicer colors than black and white using the ArcGIS JS API. Following the example ImageryTileLayer - ...
Seth Lutske's user avatar
3 votes
1 answer
78 views

How can I mask values for black outline around imagery using ArcGIS Pro?

I pulled some NAIP imagery off the web. There is a black outline that I am trying to get rid of around each image. I tried to change the symbology to not include the zero values for each band but it ...
ZephyrZ's user avatar
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0 answers
23 views

How to download 5000 Cropped Images From GEE with Dynamic Names?

I have a CSV dataset where 5000 sat image data has been given lat, long, path, row, Date, and Landsat Name. I want to filter out images using date, path, row. Cropped out a 27*27 patch centered around ...
soma's user avatar
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0 answers
26 views

Compressing the 2023 NAIP MrSID file?

Is there a way to losslessly compress a MrSID file? I know that technically this file format is already compressed, but the 2023 NAIP imagery county files are huge because of improved resolution and I'...
Ali's user avatar
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0 answers
61 views

New Zealand satellite imagery Google Earth Engine

I want to create a satellite image for all of New Zealand using 2020 Landsat 8 satellite imagery to then calculate NDVI to export into QGIS. I am wanting to compare to 1990 satellite imagery so want ...
Aimee Calkin's user avatar
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0 answers
41 views

Using gdal_translate to convert 32-bit raster to byte is black

I have a 32-bit float raster in GRASS. It is a single channel Sentinel 2 raster. I can export to geotiff with r.out.gdal: g.region rast=orthoimage_red r.out.gdal input=orthoimage_red output=...
Jeshua Lacock's user avatar
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0 answers
21 views

Equivalent to ArcMap 'viewpoint' in ArcGIS Pro

In ArcMap, there is a 'viewpoint' window which allows the user to choose an overlapping image in a mosaic in order to view ground objects at a different angle. ArcGIS Pro does not appear to have this ...
A. Mahar's user avatar
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0 answers
97 views

CesiumJS: bad imagery quality (resolution) in very close views

My TMS-Layer displayed in my Cesium-App is very unsharp rendered in a close view. When I zoom out the resolution is perfect. The resolution in the PNG tiles (Zoom-Level 21) is much higher than ...
Stefan Huber's user avatar
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0 answers
37 views

Mosaic dataset offers sensors unavailable in ortho mapping workspace

I am trying to build an orthomosaic with PlanetScope data in ArcGIS Pro. Strangely, it appears that some sensors available under the mosaic workflow are not available for the Ortho Mapping Workspace. ...
JepsonNomad's user avatar
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15 views

Imagery horizontal accuracy

I am trying to determine if the following meets ASPRS Positional accuracy standards. 3 inch [7.5 cm] GSD = 0.87 foot (27 cm) RMSE x / RMSE y Horizontal Accuracy Class +/- 2.1 feet [65 cm] at a ...
2Quiker's user avatar
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33 views

Creating polygons of Esri World Imagery Basemap that shows collection date

I'm working with the Esri World Imagery Basemap, and I need to determine the imagery collection date for every portion of my area of interest. I'm aware that the identify tool displays the collection ...
Juan Osorio's user avatar
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0 answers
72 views

WMS satellite imagery: how to set up bbox

I'm trying to retrieve satellite imagery in high resolution of a full country with a WMS API. I need them in HR since I want to perform a segmentation task on them. This is my code: REQUEST_URL = &...
wodank's user avatar
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1 vote
1 answer
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GEE: Finding number of classified pixels for entire image collection (Sentinel 2)

I'm trying to calculate the number of pixels classified as ice for every image in my Sentinel 2 collection, but when I try to map my function over all the images, each feature in my test export has ...
Will's user avatar
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2 votes
2 answers
126 views

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(...
Syed Ahmed Raza's user avatar
0 votes
1 answer
114 views

Using WMTS Imagery in QGIS

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 3.30. I can ...
Jim Frame's user avatar
0 votes
1 answer
148 views

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 ...
bph's user avatar
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2 votes
1 answer
220 views

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?
R_B's user avatar
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3 votes
1 answer
273 views

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 ...
wubeinic0587's user avatar
4 votes
1 answer
215 views

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 ...
Dave's user avatar
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83 views

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 ...
IceBear123's user avatar
1 vote
2 answers
414 views

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 ...
s_o_c_account's user avatar
0 votes
1 answer
141 views

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 ...
Madhav Warawdekar's user avatar
0 votes
0 answers
69 views

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 ...
jtam's user avatar
  • 357
0 votes
1 answer
83 views

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 ...
Pushkar's user avatar
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0 votes
1 answer
51 views

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 ...
Trey's user avatar
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0 answers
25 views

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 ...
Alana Macken's user avatar
1 vote
1 answer
281 views

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/...
Mapping_For_Good's user avatar
1 vote
1 answer
203 views

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 ...
vasudha chaturvedi's user avatar
3 votes
0 answers
56 views

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'...
UpstatePedro's user avatar
0 votes
0 answers
262 views

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 ...
user201071's user avatar
5 votes
1 answer
700 views

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 ...
user3496060's user avatar
3 votes
1 answer
253 views

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....
Comrade Che's user avatar
  • 7,271
1 vote
0 answers
12 views

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 ...
gislearning's user avatar
0 votes
1 answer
943 views

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 ...
codinggirl123's user avatar
0 votes
1 answer
46 views

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....
Fahmi Adnizar Sobarman's user avatar
1 vote
0 answers
160 views

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 ...
Yogesh Chavan's user avatar
0 votes
0 answers
24 views

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 -...
Jason's user avatar
  • 1
0 votes
1 answer
330 views

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/...
Hui's user avatar
  • 51
0 votes
1 answer
226 views

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 ...
94621's user avatar
  • 3
0 votes
1 answer
317 views

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 ...
Hui's user avatar
  • 51
2 votes
0 answers
685 views

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 ...
Thiago Guimarães's user avatar
0 votes
1 answer
988 views

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-...
Monica Pena's user avatar
0 votes
0 answers
890 views

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 ...
Malcolm's user avatar
  • 489
-1 votes
1 answer
252 views

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 ...
alauddin's user avatar
1 vote
0 answers
34 views

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 ...
Eva's user avatar
  • 41
1 vote
1 answer
818 views

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?
BWF's user avatar
  • 11
1 vote
0 answers
166 views

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 ...
Trevor's user avatar
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