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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28 views

GeoTIFF projections with Python GDAL

I have a GeoTIFF I imported into Python environment with GDAL. The image has spatial reference data, which are the parameters describing the geo model: (-104.31292762744124, 0.00030593847623094916, 0....
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27 views

Automatically georeference non-intersecting UAS photos based on contained EXIF metadata

I need to know how to automatically create georeferenced rasters from multiple non-intersecting photos taken by UAS DJI Phantom 4 Pro. All EXIF metadata is present in every photo - coordinates, ...
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22 views

Input coordinates into existing data attribute table

I would like to have the coordinatres populated in the data attribute table for my layer. My layer contains all hospitals extracted for one voivodship, where some of them are marked as the polygons. ...
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19 views

Raster and Light Gray Canvas Basemap with huge lag - ArcMap

So I'm currently using ArcMap 10.2, and having an issue when adding a raster with the following characteristics: Projected Coordinate System: ETRS_1989_Portugal_TM06 Geographic Coordinate System: ...
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29 views

QGIS Georeferencer--result raster far away and distorted

I've been trying to georeference a raster.The ground control points I choose using 'from map canvas' are quite close to the original points, but the results are far far away and distorted. Could ...
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1answer
36 views

Georeferencing raster with unknown highly non-rectilinear CRS in QGIS

In QGIS, I'm trying to georeference an image where lines of latitude and longitude are curved / non-parallel (see below) and I have no information about the projection used. Can anyone recommend the ...
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11 views

My map digitization is offset to the original georeferenced raster

So I after I was done digitizing on a georeferenced raster map saved my work and then got back to it after while, found out it's offset to the original raster. Note that I tried to rotate my work ...
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24 views

Problem updating Georeferencing for TIFF

When I update georeferencing for TIFFs, the map disappears and doesn't save. Auto adjust is off, rectify wont save, control points I can save seperately. Settings are set to documentation suggestions. ...
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24 views

Georeferencing do not display any result in QGIS

I use QGIS 3.6 in Windows and I want to georeference some HiRISE JP2 images that I have inserted to my background HRSC image. I used the Georeferencer tool and made 10 GCP for an image. I initiated ...
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2answers
55 views

Digitizing historical Brazilian map in QGIS3.4

I am trying to overlay a map of a historical boundary (in .tif format) onto a Brazilian shapefile with subnational administrative boundaries. My general question is: what is the most direct (and ...
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Exporting kernel utilization distributions from R to be used in ArcGIS Pro scene view

I have used the "kde" function "ks" package to estimate 95% kernel utilization distributions (KUD) to visualize the 3D activity range of an arboreal snake. Below is code that I modified from ...
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1answer
40 views

Why are certain GCPs in my georeferenced scanned map resulting in warping? (QGIS)

I am having issue with georeferencing a scanned map. Warping has occurred in the West in Morocco (near Marrakesh) as well as a sort of "black holes" in Libya and Northern Chad. As far as I can tell, ...
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4answers
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Are three points really necessary to georeference?

I find myself in a debate between what I have learned and used, and my employer. Is it possible to get accurate results georeferencing with only two points instead of three or four? The answers I ...
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37 views

Creating custom PROJ projection from control points

I have a JPG raster, and I used QGis to georeference it with "control points", which are pixel coordinates linked to map coordinates, in EPSG:4326 (lon, lat). Here is an example of the control points ...
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1answer
42 views

Georeference raster file (TIFF) with known CRS and with world file available

I have the following components: Unreferenced raster file (TIFF) (e.g. myraster.tiff) with desired coordinate reference system (CRS) added to the properties of the raster file within QGIS World file (...
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1answer
92 views

QGIS Georeferencer Problem After Photoshopping Source Raster

In QGIS 3.8.2 I georeferenced a set of aerial photos from USGS Earthexplorer website and decided that I need to photoshop them to brighten them. So I photoshopped the original ungeoreferenced source ...
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20 views

Georeferenced black and white maps showing up as mostly transparent and very low resolution once exported from MXD to KMZ

I exported .pngs from a simple black and white pdf map, georeferenced them in ArcMap 10.3.1 and then wanted to export them KMZ. However, upon opening my kml, the maps have become mostly transparent, ...
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0answers
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How to geo-reference a level 1A satellite image to level 1B?

I have satellite images which are not geo-referenced. The metadata of images is below. name: 1235078921.68220448_sc00106_c1_PAN datetime: 2019-02-24T21:28:23Z gsd: 1.03381 bit_dpth: 16 Satellite ...
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1answer
34 views

How to convert SPL2SMAP_S data (available in .h5 files) to *.tiff files?

I had downloaded some data from https://nsidc.org/data/SPL2SMAP_S The description of the data is given in the page. Using an earthdata login, one can download the data. The data consists of *.xml and *...
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1answer
59 views

Change in altitude value after resizing .tif file

I have a TIFF file of 7378x6923 (widthXheight) resolution. I resized it to 1200x1200 pixels using Image module in Python. img = Image.open('path to tif file') img = img.resize((1200,1200)) But after ...
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1answer
23 views

QGIS GeoTIFF registration error

When I load a TanDEM GeoTIFF in ER Mapper, the coordinates of the cells are correct, i.e. the top left corner is the correct Lat/Long. When the same data are loaded in QGIS, the cells are all moved by ...
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1answer
79 views

Abnormal Output of OpenDroneMap with GCP file

I am using a gcp_list.txt file with the following text: I am supposed to get a geo-referenced mesh object like this: But, I am getting something like this: I am running ODM locally in ubuntu 16 ...
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1answer
55 views

Georeferencing NASA, NOAA, and Natural Earth Projections in QGIS

I'm new to QGIS. I'm currently using the newest version-- 3.10. I downloaded a raster projection (a tiff file) and vector data (SHP files of coastlines and rivers) from Natural Earth I to import as ...
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1answer
80 views

Tracing Georeferenced image in QGIS

I am trying to trace in QGIS after using GEO REFERENCER on the Vector menu of QGIS to import an image . QGIS which is amazing the youtube tutorials are brilliant videos are sadly for the 2.8 ...
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0answers
40 views

GDAL Georeferencer Tool Not Appearing In Processing Menu - QGIS 3.4 Ubuntu

I know this question has been raised several times before (Georeferencer on QGIS3 Missing? and Missing Georeferencer), but my situation is somewhat different. The georeferencer tool does not appear in ...
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0answers
68 views

Georeferencing using GDAL geotransform top left corner coordinates

Following this stack exchange example by kflaw, and other examples of the use of geotrasform I am trying to georeference images using pre-computed extent rectangles. However, I am also struggling to ...
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27 views

Displaying raster images that are already georeferenced in QGIS

I have a number of historical surveys that I have already digitized, georeferenced, and clipped using ArcMap 10.6.1. My office wants to try using QGIS but I am completely new to the software. Both ...
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0answers
21 views

Creating georeferenced Sentinel-2 image in MATLAB

I am trying to create a georeferenced NDVI map using MATLAB from Sentinel-2 (jp2 format) images (a coordinated image that each pixel has latitude and longitude). I read many resources about this issue ...
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0answers
48 views

Mapbox - Uploaded GeoTIFF file has no bounds

I'm trying to add GCP data to an old map and then upload it as a tileset to Mapbox. I've managed to add the data using Georeferencer and the output in qgis looks okay, but when I upload it as a ...
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0answers
27 views

Fitting .svg on layer with georeferencer using QGIS

I am using QGIS 3.4. I'm trying to fit an image (as an exercise) using the georeferencer, but I don't understand the result. The srs I choose seems to be correct, and my coordinates (on several ...
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1answer
76 views

Orthorectifying or Georeferencing aerial photographs

I got 3 aerial photographs from a mountainous area (~3500 - 4000 m.a.s.l), from 1956, 1965, 1977 (no metadata, no camera parameters, scanned white and black). My study catchment is relatively small (1 ...
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1answer
82 views

Georeference image using center point and size?

I have looked through the forum extensively but found no answer. Apologies in advance if this has been addressed somewhere already... I have >500 png image files (from a microscope) that I would like ...
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1answer
71 views

Using QGIS Georeferencer

I am trying to georeference a pdf into my QGIS project. I am doing the exact same way as I have done many many times (same transformation settings, number of reference points...). After doing the ...
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0answers
36 views

How to find the coordinates (longitude, latitude) of a point in an aerial image? [closed]

I will be receiving drone images from an associate. It'll have longitudes/latitudes values from the corners of the image. I don't have access to his image processing S/W. It'll be in a relatively ...
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1answer
43 views

*.h5 Projection Parameters

I have a file named 'VNP13A1...h5' and I'm trying to georeference it in Python 3. I know how to read and extract data from this file and what I'm trying to do is automating this process for other ...
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2answers
85 views

Watermarking TIFF with pillow in Python breaks georeferencing

I am trying to automate the watermarking of thousands of georeferenced TIFF files with a Python script. The files have related tfwx world files and aux.xml files. When I run the code the spatial ...
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55 views

Shapefile appears correct on QGIS, but wrong on Google Earth

I've created a shapefile on QGIS, drawing over a raster that I've just georeferenced. The raster is a map with UTM lines drawn every 50 meters, so it was easy to georeference. Moving the mouse over it ...
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0answers
55 views

How to determine if a .obj 3D Mesh file is geo-referenced or not?

I have a .obj file output from OpenDroneMap. But I cannot determine if it is geo-referenced or not. How can I determine that?
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37 views

Using gdal_translate with a high number of gcp

I've a CSV file witch describes the coordinates of each pixels in a image, it is structured like this: xcoord,ycoord,row,col 716657.6518375501,4784215.095395751,0,0 716657.6915582813,4784215....
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1answer
116 views

Problematic file size after georeferencing in QGIS

I have to georeference a few hundred JPEG maps in QGIS. Each of these maps has an average size of 20 MB. After georeferencing, these maps must be loaded into ArcGIS on another computer, of course ...
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86 views

How to georeference this image?

I need to georeference this .tiff. I see coordinate values ranging South-North 550000-554000 and West-East 10000-12000. Do I need to know the coordinate system to georeference the image ?
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1answer
142 views

Georeferencing DWG using QGIS?

I am using QGIS 3.4.11 on Windows 10 x64. I have three large DWG files that are the output of a survey (each roughly 5MB). No problem to import them into QGIS as geopackages using the built in DXF/...
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1answer
76 views

Raster TIFF file does not project onto QGIS basemap correctly

Forgive me if this is a simple fix, I am new to QGIS 3.8. I have a .tif file that when opened into QGIS is projected on the (0,0) lat/long coordinate of the base map and is very small. I have ...
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0answers
24 views

Recognized, calibrated test points for a rangefinding function?

I'm trying to find out if there are scientifically accepted calibration points to measure the effectiveness of a geodetic distance finding function. So far I've been using the listed latitude / ...
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1answer
37 views

Conversion of MLS/AURA RELATIVE HUMIDITY PRODUCT to correctly referenced GeoTIFF

I have downloaded the following product https://cmr.earthdata.nasa.gov/search/concepts/C1251101764-GES_DISC.html and it gives me a .he5file. Can anyone help me in correctly geo-referencing the file ...
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1answer
68 views

QGIS georeferencing plugin workaround

I need to georeference an image. I had QGIS 3.2 installed. When I clicked on "Plugins -> Manage and Install Plugins" QGIS froze. So, I tried installing 3.8 and the same things happened. Tried 3.4, ...
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2answers
104 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 ...
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0answers
60 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
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1answer
89 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) ...
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1answer
64 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 ...

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