Questions tagged [georeferencing]

Aligning geographic data to a known coordinate system so it can be viewed, queried, and analyzed with other geographic data.

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Surfer .grd not displaying or georeferencing correctly [closed]

We have GPR depth slices that have been exported as .GRD (surfer format) and want to view and georeference them in QGIS. These data were collected on a local grid, and we are interested in ...
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Finding real world reference points on assessor's map

This is probably a very basic question, but I don't even know the right terms to use to start searching for what I need. I'm new to this, but I want to learn. I have the following assessor's map, and ...
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Convert Google Maps image to ArcMap

I would like to import a Google Maps image of Costa Rica into ArcMap and create a shapefile of this region. A screenshot of the selected region has been taken and I want to process it into ArcMap and ...
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2 votes
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Georeferencer QGIS Import jp2 - Export jp2? - Is that possible?

I would like to do a georeferencing via QGIS 3.22.5. I'm using the standard implementation at the menu point "Raster" -> "Georeferencing". My import file is a jp2-format and ...
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Creating polygons from rasters using color values via a color sampler in QGIS

This seems like a question that should have been asked, but the trick with all this is in knowing how to ask the question. I would like to use the background satellite imagery from GE or Bing or ...
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How to specify visible extent of raster in QGIS without clipping original

Is there a way to limit how much of a raster is shown in QGIS3 without clipping the raster to a new file? In my old workflow from Arcmap I would georeference scanned maps or rasters with tics in the ...
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Georeferencing PNG from bounding box in GDAL?

I have an image in PNG format and bounding box coordinates (upper left, lower right). How do I georeference it using command-line interface tools such as GDAL (or Python if it is not possible)? In the ...
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Does the QGIS Georeferencer have a point prediction function?

When taking GCP using Georeferencing in QGIS, Is there a point prediction function? For example, when working on GCP in an ERDAS program, put reference coordinates (ex: 10 coordinates) After taking ...
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How to resample when using Georeferencer in QGIS?

How to resample when using Georeferencer in QGIS? QGIS wants to take GCP using Georeferencing. I have been working on GCP using ERDAS, and even if I zoomed in using 'resampling method-bicubic ...
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QGIS PROJ custom CRS for only shifting X and Y

I'm not very fluent with CRS and custom CRS but I'm only want to shift X and Y WGS84/32N coordinates. For example: with point A(115633.49, 57104.49) of my maps, in EPGS:32632 would be A(1112126.15, ...
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How to georeference image with GCP in aux.xml using Affine transformation

I'm trying to automate georeference of big amount of non/georeferenced image file stored in TIF format to work with them in QGIS 3.16.4-Hannover. These TIF files are 8 bits (B/N) and I only have aux....
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Difference between control point, reference point, and tie point

I georeferenced a map using grid coordinate and road network shapefile (e.g. intersection vertex) as a control point. I didn't acquire a control point through the survey. so I use "control point (...
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BlenderGIS: georeferencing and exporting 3d model?

I can add a georeferenced basemap using BlenderGIS and overlay my 3d model on this basemap. I want to export this 3D model as a georeferenced file, but only see a shapefile export option (which cannot ...
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Georefence a PPM raster with GDAL

I have a PPM with a GEO file but GDAL does not recognize the GEO file. emwin@weather:~/SPLAT/bin$ cat roeske_bridge.geo FILENAME roeske_bridge.ppm # X Y Long Lat TIEPOINT 0 0 ...
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How to calculate rigid geotransform (scaling and rotation only) from GCPs in Python

I've been georeferencing images using automatically detected GCPs using Rasterio but it only has Affine transforms. I'm aware that QGIS has some rigid transforms as an option in the Georeferencer tool ...
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Automated georeferencing 3D (multipatch) geometry in ArcGIS Pro?

After importing a 3D Collada (.dae) file using the "Import 3D Files" tool, I need to georeference it using the Edit tools (move, rotate, and scale). This is a tedious and error-prone process....
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Georeferencing a large set of points

I have a static image of a map: And I would like to obtain the coordinates of each blue point. I am very new to QGIS but I have done a very similar task but for a much smaller set of point. My ...
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QGIS georeferencer - user profile problem

When running the georeferencer I sometimes find that the progress indicator hangs after a few seconds with a non-responsive message following which the program becomes unresponsive and QGIS needs to ...
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3 answers
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How to write a georeferenced GeoTIFF from known coordinates with Python rasterio

I have three numpy arrays, one with data, and two more with explicit longitudes and latitudes. I'd like to write this data to make a GeoTIFF file with rasterio such that I can load it with QGIS. The ...
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QGIS crashes when loading DWG file in Georeferencer

I am trying to use QGIS to georeference a CAD file. I open Raster/Georeferencer and then click on the Open Raster icon. The first time I tried this it warned me that it would only accept DWG R2000 [...
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2 votes
1 answer
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QGIS georeferencing leads to wrong position

I'm trying to georeference a TIFF file in QGIS (version 3.20.0-Odense) based on a WMS layer (EPSG:4326). The project is in EPSG: 25832 and I used the same as output for the georeferencing (4 points, ...
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Continuous errors in georeferencing - rotated, scanned images in QGIS

I have >200 scanned maps for georeferencing (downloadable example). But as soon as I load them into the georeferencer in QGIS they appear rotated 90 degrees (E or W). Despite the rotation, when I ...
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Rectifying data source for MXD file using ArcMap

I tried to rectify my data source on ArcMap but was unable to locate my data file which is an MXD file. How can I rectify the data source for an MXD file ?
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2 votes
1 answer
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Open Georeferencer with layer path in PyQGIS plugin

I develop a QGIS plugin that includes a step of georeferencing. I want to open the Georeferencer from QGIS and to load an image with its path when I click on a PushButton. I found this topic : Open ...
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How to efficiently find pixel coordinate in raster if affine transform is not, but coordinates of all pixels are given?

I have two 2D numpy arrays, one of them contains the latitudes, the other contains longitudes of a raster. For example: lats = \ np.array([[26.21965851, 26.21965851, 26.2196585 ], [26....
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Geo-referencing PNG with exact coordinates

For a bit of background, I am a novice when it comes to GIS stuff. I do a fair amount of geo-referencing of images but it has never had to be with exact coordinates like this project. I am trying to ...
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Georeferencing with only single coordinate

I'm currently examining the new proposed sampling points based on a drainage map without coordinates. Previously, I was only given a single coordinate given by the consultants for their monitoring ...
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GeoPDF added into QGIS gives a broken raster; GeoReferencing it gives an invisible output

I've been attempting to add a GeoPDF to my QGIS 3.16.14 project. The PDF is available here: https://reliefweb.int/sites/reliefweb.int/files/resources/reach_irq_map_mosul_city_reference_08nov2017.pdf ...
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Add column to the GCP Table in QGIS Georeferencer

I am using the QGIS Georeferencer plugin to georeference an aerial image. For each GCP, I would also like to track some metadata about that GCP—for example, whether the GCP is a natural feature, a ...
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GDAL georeference multiple PNG images as GEOTIFF with different size and extents

Following my problem described here: Georeferencing PNG image by GDAL in QGIS I would like to make some batch image georeference in GDAL. Unfortunately I couldn't find the reasonable solution for it. ...
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QGIS Georeferencer: How to deal with .points file using different CRSs?

I have some scanned maps as tifs and their corresponding .points files. The GCPs were set by different users erroneously using different CRSs. E.g. Of 340 points 180 were set using EPSG:23700, 160 ...
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Assigning georeference to NetCDF

I am trying to understand how to georeference a NetCDF DEM raster file (topo_d3.nc) using gdal_translate, by 'distributing' the raster pixels between the UL-LR coordinates - which I have extracted ...
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QGIS 3.22 Georeferencer Coordinate Reference System Selector not showing

I'm using QGIS 3.22 trying to go through the 3.16 training manual - 14 Module: Forestry Application - When following the manual instructions after opening the Georeferencer and loading the raster, ...
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Georeferencing in QGIS [duplicate]

I am doing georeferencing in QGIS. I have a file saved with the extension .tif. This file shows a map created in epsg: 2175. What should x and y be?
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Exactly what does it mean that CAD file is georeferenced?

According to a post like this, a DWG/DXF can be "georeferenced", but not all are. I guess the same is true for other CAD formats too. But exactly what does that mean that a CAD file is ...
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Checking DWG/DXF file is georeferenced

I'm working on importing a DWG into QGIS, possibly by first converting the DWG to DXF, but am not having luck with it. According to a post like this, a DWG/DXF can be "georeferenced", but ...
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Gettting data from georeferenced PNG QGIS

I'm working on a predictive system and was able to locate a PNG from another researcher showing a heat map of Oklahoma. I was able to georeference the PNG and bring it into QGIS 3.22. What I need to ...
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DragRotate Interaction Distorts GeoTIFF OpenLayers 6.9.0 [closed]

Context I have some GeoTIFF files that are loaded directly into OpenLayers via a WebGLTile Layer with a GeoTIFF source. My code is similar to the example in this workshop. I am also registering a non-...
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Georeferencing raster image in JavaScript

I was wondering if it is possible to georeference raster image using some kind of JavaScript lib or external API or other kind of service. My project is written in React with Mapbox GL JS. I wanted to ...
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Does Erdas Imagine give pixel or meters as RMSE value while co-registration of two images which both have already a projection?

I need to perform a co-registration in erdas imagine. Both of my images have already a projection, which means coordinates are shown in meters. I use the multipoint geometric correction tool (...
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Georeferencing a Utah State Park Map in ArcMap [duplicate]

I have an assignment to choose a state park map to georeference and digitize. I'm having issues with georeferencing the scanned map I chose. I have the tiff file of the state park map and have to ...
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What sensor data is required to georeference remote sensing images?

The start-up I work for is planning to capture remote sensing imagery from cameras on-board our stratospheric balloons. We would like to be able to georeference the images we capture. If it is ...
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gdalbuildvrt does not support ungeoreferenced image

I'm trying to create a VRT file from a GeoTIFF file using the following command: gdalbuildvrt.exe "C:\Temp\3533.vrt" "C:\Temp\3533.tiff" However it returns this error: Warning 6: ...
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Georeferenced image in ArcMap: replace the image file, keep the georeferencing information

I have georeferenced the image myimage.tiff in ArcMap 10.8. The file bundle of that georeferenced image then is: myimage.tfwx myimage.tiff myimage.tiff.aux.xml myimage.tiff.ovr myimage.tiff.xml In ...
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Importing a 30 MB PDF file

I want to import a PDF (approximately 30 MB) and perform Georeferencing. However, when I try to import the PDF to the "Georeferencer" my CPU usage boosts up to 100%, QGIS freezes and does ...
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Re-georeference an image that already has a spatial information

I have an aerial image that already has geo-spatial information (already georeferenced), but the original georeferenced location is very rough (not accurate). I wanted to create ground control points ...
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Georeference Sentinel-3 Data with irregular grid

I need to georeference and subset a lot of Sentinel-3-Syn-2-Files. Every data product provides seperate NetCDF-Files for each band and the actual (irregular) coordinate grid called 'geolocation'. So ...
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QGIS v3 Georeferencer "Indexing data" stage

Does anyone know what exactly is being indexed during the "Indexing data..." stage of adding referencing points from the map canvas in the raster Georeferencer tool? I had to crash a project ...
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1 vote
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Checking residual of GeoTIFF if it came from db

Let's say we have a GeoTIFF georeferenced by points indicated manually on map canvas. Is it possible to check residual accuracy of the raster if the layer comes without points file (in GeoPackage for ...
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Reversing geo-referencing formula of a GeoTIFF using world file information

I am trying to reverse the georeferencing formula for a TIFF using the world file information. Formula found at http://webhelp.esri.com/arcims/9.3/General/topics/author_world_files.htm The raster is a ...
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