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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How can you georefernce rasters on the fly in QGIS

How can you georefernce rasters on the fly in QGIS. In ArcGIS Pro when I start georeferencing and adding control points the raster will start to shift as I’m plotting the control points. So I can see ...
1 vote
1 answer
36 views

Setting the right projection for a georeferenced PNG image

I have been trying to georeference an image I downloaded from Google API. Here is how I approached it after many unsuccessful attempts: I calculated the coordinates of the corners using this code. I ...
37 votes
9 answers
45k views

Georeferencing vector layer with control points using QGIS?

I have a non-georeferenced vector layer that I need to be georeferenced. With raster layers the task is easy and straightforward, but I have no idea what should I do with my vector layer. I have a few ...
0 votes
0 answers
103 views
+100

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. ...
0 votes
0 answers
25 views

Move layers from a qgis project to an other

I was working on a non georeferenced qgis project and when I tried to drag and drop the layers from this project to a new georeferenced raster layer the other layers didn't show up. Some notes: The ...
0 votes
1 answer
266 views

Georeferencing multiple "slightly" overlapping drone orthomosaics

Situation: I collected around 2000 drone images over 200 ha. My computer does not have the resources to render one large orthomosaic at once, so I decided to split my dataset into 8 and produce 8 ...
1 vote
2 answers
116 views

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 [...
3 votes
2 answers
530 views

Finding Georeferencer in QGIS

I'm using QGIS 3.26 and I can't find the Georeferencer. I've basically looked everywhere. It should be in the raster section, but it isn't there. I checked all of my plugins if there was anything, but ...
2 votes
1 answer
330 views

Georeferencer - GDAL is missing on the QGIS 3

OS - ArchLinux 64bits SPECS - i3-3220 - 6gb ram QGIS 3.0.3 installed as follow. $ sudo pacman -S qgis gdal python-gdal python-psycopg2 python-owslib python-yaml python-pygments $ yaourt -S python-...
0 votes
0 answers
14 views

No Raster Georeferencer in PLugin List QGIS 3.26.1-Buenos Aires [duplicate]

I have QGIS 3.26.1-Buenos Aires The Raster Georeferncer is not located under "Raster" Nor does it appear when I search for "Georeferencer" in the "Manage and Install Plugins&...
0 votes
0 answers
32 views

Can't get Georeferencing GDAL to work in QGIS 3.26.1 [duplicate]

I have installed and reinstalled QGIS using both express and advanced install and to no avail can I get the georeferencing GDAL plug in to appear. It does not appear in the raster drop down and it ...
-2 votes
0 answers
24 views

Assigning geolocation to shapefile [duplicate]

I received shapefiles from the Senegalese city (probably a conversion from AutoCAD) not georeferenced. What can be done to solve this problem ?
2 votes
1 answer
331 views

Georeferencing with shapefile instead of raster image in QGIS

I have a geographic file (be it shapefile or otherwise) which is stretched and dislocated into the wrong projection space. So I'm wondering how to approximate its correct location by selecting points ...
2 votes
2 answers
4k views

Georeferencing vector dataset in QGIS?

This question may seem as it was asked before, but I think I just don't use the right terminology. Here's my problem. I'm an archaeology student trying to make an internal map of a prehistoric ...
0 votes
1 answer
392 views

Error with .jpeg in Georeferencer

QGIS error message when in Georeferencer: .jpg is not a supported raster data source. libjpeg: Bogus Huffman table definition How do I fix this? Tried different .jpeg and still doesn't work. Previous ...
4 votes
11 answers
9k views

QGIS Georeferencer Failing to Compute Transform

I've been using QGIS for quite some time, but have encountered a problem that I can't seem to resolve. I am georeferencing an aerial photograph. I have established ample GCP points. After a fresh ...
0 votes
0 answers
25 views

Batch Georeference with GCPs in QGIS OR merge GCPs

Problem: I have ~100 black PNG tiles that show nothing but prairie creeks (black-creeks tiles) I have ~100 map PNG tiles with creeks and background map (map-creeks tiles) that I can use to ...
0 votes
0 answers
23 views

Automated aerial image registration/GCP definition in QGIS ecosystem

I have a couple of aerial orthos from different sources and different years (governmental agencies, UAV mapping, etc). Unsurprisingly, they are not perfectly aligned, in a nonlinear way (i.e. it's not ...
10 votes
1 answer
3k views

Georeference single drone image from EXIF data

Looking for an algorithm (python, formulas, whatever...) to georeference a single drone image based on its EXIF data. Specifically, I need to translate drone GPS latitude and longitude (after ...
1 vote
0 answers
26 views

Georeferenced raster not even generated in QGIS [closed]

I am trying to superimpose an old map on top of a Google Satellite image, but for some reason, the raster layer won't be generated with Georeferencer and be shown in the layers window even when the ...
1 vote
1 answer
123 views

Georeference DXF file which don't has any SRS assigned

I have a DXF file which I converted from DWG (CAD) file. I convert it GeoJSON using ogr2ogr but the output coordinates are out range of WGS 84. I think it's been assigned with the random coordinates. ...
0 votes
1 answer
82 views

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 ...
1 vote
0 answers
29 views

Getting massive residuals while trying to georeference an image

I have a TIFF of a historic map that I have downloaded, and this file already has projection information. The file's projection is EPSG:27700, which is the same as my project CRS. I am trying to ...
0 votes
0 answers
40 views

Extracting and georreferencing shapefiles from a PDF file

I am trying to extract and georeference the orange polygons/lines from this PDF file of the city of São Paulo, in Brazil. To do so, I am mostly trying to follow what was discussed in another question, ...
0 votes
1 answer
23 views

Georeferencing set of historical maps to each other then georeferencing set to current map using ArcGIS Pro

I have a set of 10 hand-drawn maps from the 1930's that all appear to have the same carbon-copied basemap (the streets and shorelines look identical). They were scanned from Arch D size linen paper so ...
0 votes
2 answers
2k views

Enlarging/shrinking while maintaining aspect ratio when using Google Earth Pro to Edit Image Overlay?

In Google Earth Pro "Edit Image Overlay", the only way I have found to enlarge or shrink the overlay while maintaining the X:Y aspect ratio is to grab one of the four green corners (not the four ...
0 votes
1 answer
35 views

Does LiDAR tend to georeference better than photogrammetry?

I noticed whenever I get a photogrammetry dataset, the products (like DTM, DSM) are always misaligned from satellite imagery of the same area by a few metres. Today I received a LiDAR dataset and they ...
2 votes
2 answers
143 views

Using Georeferencer in QGIS

I am using QGIS 3.22 Stable version. I'm trying to georeference two dat. files with Georeferencer plugin in the 'Raster' section of QGIS. I manually choose all the points using "tsunami_before&...
2 votes
1 answer
43 views

Problem generating GeoTIFF from JPEG using GQIS Georeferencer tool

I am trying to follow this tutorial to convert a JPEG image of a WGS-84 Web Mercator world map to a GeoTIFF file using QGIS, but am failing to do it correctly-- the map comes out with black-hole-like ...
0 votes
1 answer
97 views

Transforming a raster .png image to vector file

I have been working with FEMA flood maps to georeferenced and then digitize the maps by hand drawing polygons of the flood zone features. I have tried some workarounds to make the digitization process ...
1 vote
1 answer
21 views

Does GDAL 3.x/PROJ 7.x do some kind of bounds checking when doing a gdalwarp operation?

This is more of a question about how GDAL 3.x and PROJ 7.x work more than a question about how to do something. I have been experimenting with GDAL 3.4.2 and have noticed some things that are ...
1 vote
1 answer
39 views

Georeference a map with lambert conical orthomorphic projection

Could you Please help me with the issue of georeferencing, I have an old map of the city of Tripoli, I want to georeference it. What type of projector should I should use? in the image the lambert ...
0 votes
1 answer
67 views

Is there a way to save the georeferencing residuals table in ArcGIS Pro?

I am conducting a georeferencing task for which I need to calculate statistics on the x and y residuals. I note that these are helpfully calculated in the control point table both before and after ...
3 votes
1 answer
2k views

Image Shifting After Georeferencing in ArcGIS Pro?

I am georeferencing images in ArcGIS Pro using control points. After I export the control points and save the image, it shifts downward and displays in a different location. Now when I open the image, ...
0 votes
1 answer
269 views

ArcScene - Spatial reference

I am having trouble merging different layers in ArcScene. As there is no such thing as the "Georeferencing" used in ArcMap, I am not able to view two different Layers in one document. Is there ...
0 votes
0 answers
52 views

Georeferencing Google Map image with GDAL, display coordinate values in WGS84

Framing this post with the question first. Question Can a GeoTIFF based off of the Google Mercator projection be warped or transformed to display WGS84 lat/long coordinates as opposed to northing/...
1 vote
1 answer
116 views

Qfield layers are not where they should be. CRS problem?

I have created a basic QGIS project with a basemap and a point layer saved with CRS OSGB 1936/British national grid. When uploaded to Qfield, my actual location and the layers I have uploaded don't ...
2 votes
0 answers
54 views

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 ...
3 votes
1 answer
570 views

Converting georeferenced jpgs to geotiff and image is shifted/warped

I have hundreds of georeferenced jpgs in ArcMap 10 that I need to convert to geotiffs. I'm trying to use GDAL translate to create geotiffs from them. Everything works great except that the resultant ...
0 votes
1 answer
748 views

Highlighting an area of a map

I would like to have a borderline around a subset South-South(SS) part of the map (Map 1) (More like highlighting the subset part). I tried to clip a vector of the subset (map 2) to the entire map, ...
2 votes
1 answer
163 views

Georeferencing CAD drawing and setting ground control points in GRASS?

I'm fairly new to QGIS and Grass GIS, and learning the interface. I have a CAD drawing that has no coordinate system assigned and needs to be georeferenced to NAD83 HARN Northern Colorado (feet). I'...
1 vote
1 answer
35 views

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 ...
0 votes
2 answers
457 views

Georeferencing imported DWG layer using QGIS

I would like to georeference a DWG layer using QGIS 3. I have imported the DWG layer saved by Microsoft Office Visio Professional. After import I have a nice lookup like below. The problem is, that I ...
0 votes
2 answers
56 views

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 ...
11 votes
1 answer
3k views

Georeference an unreferenced image using rasterio in Python

I have 6-band unregistered/unreferenced TIFF images that I have been trying to export as georeferenced GeoTIFFs. The GPS coordinates of the corners of each image is known and each image is 1024 height ...
2 votes
1 answer
43 views

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 ...
2 votes
1 answer
168 views

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, ...
1 vote
0 answers
23 views

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 ...
3 votes
0 answers
35 views

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 ...
0 votes
1 answer
100 views

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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