Questions tagged [imagery]
Imagery refers to raster based datasets acquired from sensors on satellites or aircraft.
453 questions
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How to make satellite imagery consistent for NYS Imagery
I am using NYS satellite imagery as a base map but it is using different images at the same time. Half my map is an older image and half is a newer one. I just want the base map to be one single ...
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2 votes
1 answer
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Processing large images with GDAL that have irregular AOIs
I'm trying to figure out if I can more efficiently process imagery with GDAL that has a fairly large extent, but an irregular AOI of usable data. As a cartoon, everything within the red is usable ...
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OpenLayers 9.1.0 TileArcGISRest World imagery layer is not showing properly
I'm trying to add ArcGIS REST World Imagery layer in OpenLayers. Url is : https://server.arcgisonline.com/ArcGIS/rest/services/World_Imagery/MapServer/tile/{z}/{y}/{x} ...and works perfectly in QGIS. ...
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Automatically create a polygon of non-white borders from WTMS imagery
I was wondering how could you create a (multi) polygon representing the borders of non-white areas in a non-worldwide, online WTMS imagery automatically? The WTMS in question: https://data.geopf.fr/...
1 vote
1 answer
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Adding gamma values to raster band
I have a TIFF file and tested out that gamma 0.5 would be nice to add to the red band. How can I do this mathematically using gdal, would rather not use Python? newRed = originalRed^gamma
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Gdalwarp() based orthorectification using computed RPCs has distortions and artifacts
Orthorectifying an image with RPCs computed (using this library) based on a manually marked set of GCPs and an elevation model gives an output which looks something like what I've attached below ( ...
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1 vote
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Batch georeferencing of aerial imagery above the ocean using R
I am working with aerial imagery collected above open water. The raw images are not georeferenced. I am using the closest position recorded by the aircraft (based on timestamps) as the coordinate for ...
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GEE MODIS Error: Image.gte: If one image has no bands, the other must also have no bands
I want to map a function to count how many pixels in my study area have been detected as a hotspot at least once, by month, for a given time period. I want the output to be a list of hotspot counts ...
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1 vote
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Forcing ESRI World Imagery to render next-best imagery if imagery is not available at that scale
When using ESRI World Imagery, if there is no imagery associated with the current zoom scale of the map, it shows an error: "Map data not yet available". Is it possible to force the layer to ...
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-1 votes
1 answer
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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 ...
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1 answer
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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 ...
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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) ...
1 vote
1 answer
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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 - ...
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3 votes
1 answer
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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 ...
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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'...
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