Questions tagged [georeferencing]
Aligning geographic data to a known coordinate system so it can be viewed, queried, and analyzed with other geographic data.
771
questions
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13 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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13 views
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 ...
1
vote
1answer
22 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
45 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 ...
0
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1answer
22 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 ...
3
votes
1answer
74 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
33 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
54 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
35 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
48 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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26 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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12 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 ...
3
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0answers
36 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
26 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 ...
1
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1answer
61 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 ...
2
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1answer
66 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 ...
1
vote
1answer
52 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
33 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 ...
1
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1answer
37 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 ...
3
votes
2answers
71 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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54 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
29 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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35 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....
4
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1answer
78 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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0answers
85 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
105 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/...
1
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1answer
71 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 / ...
1
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1answer
35 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 ...
2
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1answer
60 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, ...
2
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2answers
81 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
50 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
74 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
58 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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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
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0answers
23 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
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1answer
125 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
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2answers
53 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
...
1
vote
2answers
181 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
62 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: ...
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0answers
30 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
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1answer
32 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
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1answer
104 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 ...
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0answers
324 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 ...
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0answers
39 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
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0answers
19 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
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2answers
51 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
70 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
125 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
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1answer
27 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, ...
