Questions tagged [georeferencing]
Aligning geographic data to a known coordinate system so it can be viewed, queried, and analyzed with other geographic data.
743
questions
1
vote
1answer
25 views
QGIS Raster Georeferencer adds black padding to corners of adjusted black and white TIFF image
After georeferencing a black and white TIFF image, the QGIS Raster Georeferencer fills the corners with black pixels, creating black elongated triangles along the edges of the new image. I could not ...
0
votes
0answers
20 views
Getting complex CAD drawing to right location in QGIS?
I have a complex CAD drawing from a city with many layers..hatches, points, poliylines..and I need it to georeference because when I import the DWG file into QGIS it turns out to be at the wrong place....
2
votes
1answer
39 views
Georeferencing a numpy tensor (spatio-temporal data)
I have a CSV file in which each row represents a record of an event with the following columns:
latitude, longitude, time
I want to build a numpy tensor with n x m x 8760 (hours in a year) ...
2
votes
1answer
47 views
Identifying coordinate system of historical map for Arctic Ocean?
I have a historical map (Arctic Ocean) with unknown CRS system.
In order to compare it with my results, I have to merge them somehow.
Could someone suggest the closest possible coordinate ...
1
vote
0answers
11 views
Image error polynominal transfomation
I'm georeferencing a Landsat 8 oli no QGIS trip. I include the control points and the system calculates the residuals for each point. At the end it indicates the polynominal mean error of the ...
2
votes
0answers
22 views
Adding additional points to GCP table after an image has been georeferenced
I have finished georeferencing an image with no attached coordinate system. I was unsatisfied as the image was not accurately overlayed on the map. The dx/dy & Residual error values are not ...
0
votes
1answer
55 views
Red lines appearing in QGIS Georeferencing?
I am georeferencing some old aerial pictures in QGIS. The area encompass mountains, hills and a flat area.
For some pictures the error is quite low and I am satisfied with the overlapping (error is ...
0
votes
2answers
48 views
CRS for old Falklands maps in QGIS?
Does anybody know which CRS should be selected when georeferencing a Falklands map made in 1961? The map itself says only:
Grid: UTM Zone 21
Projection: Transverse Mercator
Spheroid: International
...
0
votes
1answer
65 views
Georeferencing VNP46A1*.h5 Data
I'm trying to analyze nighttime lights of a specific area with VNP46A1 data. I got my data from this website, but I could find only few tutorial about this product, and one of them was ...
2
votes
1answer
37 views
QGIS: Georeferencing a scanned map with known LCC projection and lat/long grid
I looking for advice or recommanded methods to georeference scanned maps for which I know the projection and some coordinates with lat/long dat in degrees
In my test case, projection is:
lcc: ...
1
vote
0answers
25 views
Importing an image to QGIS with no coordinates, only a scale of the drawing
Is it possible to import a drawining into QGIS without having any coordinates or CRS. The scale that I have is 1:1250.
1
vote
1answer
24 views
QGIS georeferencer distorting colours?
I try to use the georeferencer to geofreference certain building plans, but the referencer really distorts colours:
As you can see in the picture. it hollows out what used to be solid red, black and ...
1
vote
1answer
52 views
Get Row/Column of Latitude/Longitude
I downloaded Sentinel-2 Imagery from AWS & I'm using rasterio to read/manipulate the data. I want to find the row/column coordinate of a latitude/longitude point that I initially used to search ...
1
vote
0answers
48 views
Georeference an unreferenced image using rasterio in Python
I have unregistered/unreferenced 6 band 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 ...
1
vote
0answers
32 views
Error georefencing an aerial image with QGIS (for relatively small area)
I have an aerial image (.jpg format) of a relatively small site and have been trying to georeference it and generate a corresponding .tif file. I followed several online tutorials, but I keep getting ...
1
vote
0answers
17 views
Georeferencer stopped working
I georeferenced some things about a month ago no problem. However now when I click my reference plugin it does not open the Georeferencer dialogue box or the georeference drop down menu. It is enabled ...
0
votes
2answers
38 views
Georeferencing screen shot of Bing imagery in ArcMap?
I've been using the world imagery layer in ArcMap for hand-digitizing possible restoration sites. This has generally been adequate except for a few instances in which the imagery is a bit old and ...
0
votes
1answer
48 views
Using QGIS to Make Poster Maps? [closed]
I am very new to GIS and am trying to use QGIS 2.8 to make a very large display map of Southern Ontario, roughly 4 feet by 8 feet. I would like to use aerial imagery, and am thinking of using the Bing ...
3
votes
1answer
78 views
Georeferencing RasterLayer using ArcObjects?
I have a raster derived from a .png which has been drawn into a geodatabase.
I also have the spatial reference and extent coordinates where I want to georeference the raster.
Is there a way to ...
0
votes
1answer
19 views
Rotating around arbitrary point, not center when using Google Earth Pro to Edit Image Overlay?
In Google Earth Pro "Edit Image Overlay", we can rotate the overlay
around its center (via grabbing the green diamond,) but how might one
rotate it around an arbitrary point not its center?
(Yes, ...
0
votes
1answer
39 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
0answers
11 views
Menu bar locked to georeferencer options in QGIS 3.4.5 on Mac
After launching georeferencer the contextual menu bar on mac becomes locked to the georeferencer menu options irrespective of whether the window is the active window or docked. Closing georeferencer ...
0
votes
0answers
24 views
Projecting SAR GeoTIFF in azimuth & slant range coordinates
I'm newish to SAR imagery. We have SAR imagery generated from an airborne SAR platform that we are sharing with partners. We have been feeding them geotiffs of the imagery in WGS84 and EPSG:3857 for ...
0
votes
0answers
13 views
Retaining georeferencing information from CAD when opening in another mxd?
I georeferenced about 150 CADs, updating the georeferencing as I work. I created a new mxd using the same base layers and added one of the CADs that was georeferenced but it did not retain the ...
1
vote
0answers
71 views
Georeferncing issue QGIS 3.6 [closed]
I'm trying to georeference a GE satellite image and I've got the below problem. What I am doing wrong?
I want it as same as a square polygon to start mapping.
1
vote
0answers
30 views
Photoshop JPEG won’t open in QGIS
I have scanned old map (no grid ref etc) and then assembled high res JPEG in Photoshop (but obviously could save in other file format, e.g., TIFF) I am now trying to georeference in QGIS 3 but on ...
1
vote
1answer
41 views
QGIS geo referencing - black background transparency
I georeferenced a raster file and ended up with a black background (exact 000000)
The raster file contains a lot of black, so setting black to be a transparent color is not a good solution since I ...
2
votes
2answers
132 views
Compressing georeferenced images
I have a bunch of georeferenced TIFF images created in QGIS. The person creating them saved them as uncompressed (around 1 GB each).
I would like to compress them as LZW to save space.
How can I do ...
0
votes
0answers
23 views
Any plugin for converting web-based satellite imagery into ArcMap
I recently lost an Add-In toolbar that displayed imagery in ArcMap where I could assign projection to the data frame and my drawings on the satellite images would be "accurate" (vs drawing in a WGS ...
2
votes
0answers
53 views
Georeferencing multiple images as GeoTIFF (same size and extents) in QGIS
I have 50 images and I want to georeference them all on to the exactly same place. They have all the exactly same size and extends. I've begun to load the same georeferencing points for every single ...
-1
votes
1answer
84 views
Importing animated GIFs in QGIS
Is it possible to import a animated GIF into QGIS? And is it also possible to georeference it, to have it on the right place?
1
vote
1answer
73 views
Geo-referencing historical topographical in ArcMap using the original grid
I am trying to geo-reference a series of maps of the German Military service in ArcMap or ArcGIS Pro using the coordinate grid (in red) provided by the German Military during the WWII. The attached ...
0
votes
0answers
26 views
Updating Georeferenced Imagery?
I created a photomerged aerial image in Photoshop and i need to update a small section but, don't want to georeference the entire thing all over again.
How can i replace the imagery?
I am not ...
-2
votes
1answer
37 views
Loading georeferenced map TIFF image into shapefile using ArcMap?
I need to add this Lake County townships map into a shapefile that contains other counties' townships. The shapefile's fields are: Township, Shape, Shape_Length, Shape_Area and County.
How can I do ...
0
votes
1answer
63 views
Georeference an image by knowing two Lat/Long coordinates?
How can I georeference an unrotated image by knowing two Lat/Lng coordinates?
I tried to transform the coordinates to UTM, but this didn't work (for me), because I also need to rotate it and ...
1
vote
0answers
67 views
How to georeference point cloud data that was no spatial information?
I'm working on a project right now that the final goal is to compare two DTMs of a glacier surface from different years to visualize the change over time of the glacial surface. The first DTM was ...
2
votes
1answer
52 views
GDALwarp HDF5 Image With Unknown Projection
I have a NetCDF file that contains a series of HDF5 bands. I am looking to project one of these bands contained within this file. I've attempted to use the following command to achieve this:
gdalwarp ...
0
votes
1answer
72 views
Control Points Disappear from ArcMap Link Table
I georeferenced a scan map and updated my georeferencing after adding the control points. But after I started digitising, and saving edits, I soon realised that when I open the link table on the ...
1
vote
2answers
108 views
Importing a georeferenced DWG/ DXF into QGIS
I work in an ecological consultancy and we would save money on mapping tiles if we could import DWG files into QGIS, they must be georeferenced however as we need to draw on various habitats ...
0
votes
0answers
14 views
How to check the distortion of an image that has been taken from a drone in order to georeference it?
Is it possible to check if my video, taken from a dji phantom 4 advanced has the fisheye effect? I want to georeference multiple same frames, so i wonder if i have to correct the distortions first.
...
0
votes
1answer
60 views
City Engine: Align Terrain to Shapes - Purpose?
What is the purpose of aligning the terrain to shapes, if I have already aligned my shapes to the terrain?
In my understanding, the terrain is a reference surface, and therefore I wouldn't want to ...
2
votes
0answers
88 views
automatically georeference QgsGeometry.fromPoint features on creation
Is there a way to automatically georeference fromPoint features upon creation?
I use this layer URI:
self.pinLayer = QgsVectorLayer(
"Point?crs=epsg:3857&field=id:integer&...
1
vote
1answer
42 views
Looking for a projection used for Nova Scotia in 1924
I have a map of Nova Scotia published by the Department of the Interior Canada in 1924 which I would like to georeference.
The map has a graticule labeled with latitude and longitude. According to a ...
0
votes
1answer
32 views
QGIS Georeferencing - removing co-ord bubbles from .tiff file layer
I'm new to QGIS ...
I've georeferenced a raster image using the georeferencing tool. That went well. However, when the new TIFF layer opened, it still had the yellow co-ord bubbles. How do I remove ...
1
vote
1answer
79 views
Find CRS/Projection that matches a map [duplicate]
I have been given some utility plant maps for a project my company is working on but they don't come with a projection listed (they are in PDF format, but I will strip them down, make them transparent,...
1
vote
1answer
166 views
QGIS 3.4.4 georeferencing issues
I have upgraded to QGIS 3.4.4 and using the georeferencer and there appears to be shift when zooming in and out of a georeferenced image (Transformation type is Helmert, Resampling Method is Linear ...
0
votes
0answers
146 views
reproject *TO* MODIS sinusoidal grid
I want a global file chopped into multiple netcdf files corresponding to the modis tiles.
I currently have a directory of GLOBAL netcdf files over time.
NOTE: ERA interim data is on the regular lat/...
0
votes
0answers
148 views
Creating GeoTIFF from TIFF image?
I have a TIFF file that is 2880x1440 pixels. It is a global map in simple cylindrical projection (i.e., each pixel is a 1/8th degree square):
If the uppermost leftmost pixel has coordinates x = 1, ...
2
votes
2answers
181 views
Georeferenced images not lining up correctly with one another in QGIS?
After georeferencing these 3 images onto my basemap (openstreetmap) they do not line up (see how the white lines are mismatching). Why is this the case and how can I solve this problem?
I made sure ...
2
votes
1answer
44 views
What is happening different to my TIFF between export data and arcpy
I am working in FME with TIFFs downloaded from sentinel-1 (SAR). These TIFFs display correctly in ArcMap but in FME is loses its spatial reference and a bound box calculation gives the number of ...
