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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0answers
157 views

What can the GeoTransform parameters tell me about an incorrectly georeferenced map?

I have two GeoPDF maps of the same area published a few years apart. There are only minor updates so virtually identical. However the newest map appears to be incorrectly georeferenced. I ascertained ...
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0answers
124 views

Google earth image appears flat and in the wrong location when georeferencing

I've been trying to add an image of my site which I got from Google Earth Pro. But I can't seem to georeference it properly using the georeferencing tool in Predictor noise modelling software. I've ...
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2answers
290 views

Finding tie points between a georeferenced and a non geo referenced image

Is there an open source program for finding tie points between a non-georeferenced image and a georeferenced image? I am looking for something I can run at the command line in linux to incorporate ...
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1answer
208 views

Georeferencing X Y (AND Z) with GCPs in QGIS

I have GCPs recorded to centimeter precision in lat, long, and elevation. I want to georeference my UAV-photogrammetry-generated GeoTIFF and DEM with these GCPs (since the GPS on my UAV is only ...
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1answer
717 views

How to georeference an image dynamically

I am looking for dynamic approach how to georeference an image of a radar. This is a data that is going to be fetch every hour. Of course I will only need radar data (without base layer and borders) ...
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2answers
250 views

QGIS version 2.18.14 exporting georeferenced tiff file to kml

It seems everybody can use right-click on layers, and "save as" to export to .kml. I only get the opportunity to save as "GTiff". What am I missing out here?
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0answers
371 views

Georeferencing CIA's Lambert Conformal Conic projection in QGIS?

I'm trying to load into the QGIS an image generated from the NA CIA Fact Book PDF which uses Lambert Conformal Conic Projection, standard parallels 25°N and 77°N. I'd like to work with the exact ...
10
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1answer
328 views

Georeferencing Museum specimens with poor locality descriptions

I am currently collating a list of specimens from databases of various natural history museums for further research. However, a well known issue associated with majority of historical data is the lack ...
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0answers
17 views

Display data as georeferenced using three matrices of lat / long / data?

I have a 12 x 12 matrix of data and two more matrices of corresponding latitude and longitude. Is there a way I can import the data as a georeferenced raster in ArcMap? For example, in Matlab, ...
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2answers
551 views

Import JSON or CSV with corner coordinates

I am trying to import meteorological forecast data into QGIS. Unfortunately the data lacks coordinate attributes, the spatial data is specified by the met institute as corner coordinates (SE, SW, NE, ...
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0answers
100 views

Georeferenced overlay not being displayed properly on Leaflet [closed]

I have an image of Europe and Asia with an unknown projection that I want to display on Leaflet. So I georeferenced it on QGIS with EPSG:3857. The result looks pretty good. For example I get the ...
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1answer
96 views

Exporting .tiff georeferenced images in layout view using pyhton

I have square grids of about 1000 polygons and i want to export TIFF images of each grid using a Python script, am having this below Python which gives me only .tiff images without referenced mxd = ...
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1answer
156 views

Can't run Georefrencer in QGIS 2.18.13

Nothing happens when I click the Georeferencer menu in QGIS 2.18.13. No window appears (menu Raster - Georeferencer - Georeferencer). I last used the georeferencer a couple of weeks ago, most likely ...
3
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1answer
142 views

Georeferencing scale error

I have a map scan (scale 1:500, CRS probably: ETRS89 / UTM Zone 33N) and want to georeference it. Therefore, I set a ground map (Google Satellite, CRS: WGS 84/ Pseudo Mercator). After georeferencing, ...
2
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1answer
167 views

Fetch\read extent of a georeferenced PDF file [closed]

How to read\retrieve the geospatial extent of a georeferenced pdf file ? Is this information stored as metadata with the PDF file ? is there any API in python or other language that can read \ fetch ...
2
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1answer
331 views

Sentinal-2 Georeferenceing [closed]

Are Sentinel-2 data geometrically corrected or do they need to be georeferenced as an image to image? What is the best software for processing?
2
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2answers
262 views

Performing aerial triangulation on scanned aerial photos without having surveyed ground control points (GCPs)?

I have a set of 1200 historical aerial photos covering North Carolina outer banks area from 1974, 1984 and 1992. I need to georeference them and produce seamless color balanced dataset that will be ...
2
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1answer
3k views

Loading a shapefile and image using DotSpatial

I am using DotSpatial 1.7 in my win form app. I have an image (original image) downloaded from Universal Map Downloder and then loaded this file with a shapefile in QGIS and then georeferencing the ...
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1answer
217 views

Georeferencing JPEG from TIFF using ArcMap?

I recently georefernced some TIFFs. However, unfortunately I have to do the same stuff with equivalent JPGs (same image, same resolution, just JPGs). Is there an easy way to georeference the JPGs ...
3
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1answer
222 views

How to fit polylines on base map layer using QGIS?

I have transformed a pdf into polyline and i want it to fit into the base map of OpenStreetMap. How can I rotate and reduce the polylines layer? With the image will be easier to know than I ask.
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1answer
64 views

Specifying coordinate system

I was given a point shapefile that does not have coordinate system. So, I need to specify it. I was told that this have following reference system. Coord. Sys. – 17 South (UTM) Units – US Survey ft ...
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0answers
206 views

formula to calculate geo-referencing paramerters

I am trying to overlap the vector and raster data. I have two control points on both raster and vector data. Now I want to generate world file parameters for overlapping two data. I am using ...
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3answers
5k views

Importing, moving, rotating and scaling jpg images onto OSM maps in QGIS

I'm a master planner and I want to use QGIS for, among others, importing images (jpg, png, etc without any georeferences). These images will mostly be screenshots of existing structures in Google ...
2
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0answers
583 views

How to get EPS vector as georeferenced layer into QGIS

I've got a eps-file with polygons of landuse. The file have got coordinates to georeference it. I need to convert it into a geo vector. I could do the following steps: export/convert the eps to ...
3
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1answer
102 views

Down sample with imagemagick then import worldfile?

I'm trying to get a better understanding of the limitations of world files and how I can use them in a current project. If I produce an ESRI world file (tfw) with listgeo: listgeo -tfw clip.tif ...
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0answers
141 views

Using georeferencer plugin of QGIS (gdal)?

I need to rotate the tiff image that you can see below (basically, consider that the RED rectangle belongs to the tiff: I want to rotate it so that the RED rectangle aligns with the GREEN one). To do ...
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0answers
110 views

Translating and warping tif using python bindings of GDAL?

I am trying to rectify a tif of of sonar images collected from a moving ship. The tifs are in the form of long ribbons. I have ground control points (GCPs) that match coordinates on the tif (row and ...
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1answer
921 views

Aligning rasters with basemap?

Newbie GIS user here. Basic question about getting my raster (DEM) to align with my basemap. I've read similar threads but none of them make sense to me. In short, I have added a bing aerial layer in ...
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1answer
113 views

Georeferencing map images

I have to regularly create KML polygons of map area outlines (white outline, QGis width 1.754, Google Earth width 5). I tend to have map image source files. I know how to georeference a source image ...
6
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2answers
637 views

Print Composer Reference map

Recently started using QGIS 2.18, for basic mapping. I am using Swedish GEO-agancy data shapefiles as bottom layers with my own shapefiles as toplayers (EPSG:3006 (SWEREF99 TM)), including a GPX file (...
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1answer
520 views

Editing/adding GCPs using QGIS?

I have georeferenced some aerial images, loaded in QGIS and saved them (files .tiff, aux.xml and .points). These images overlap, however I found that some details in the borders did not match exactly ...
3
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2answers
519 views

What CRS to use to georeference map?

I am trying to georeference a raster map from Nepal. What CRS should I use? PROJ.4 or WKT form. I will use the UTM grid to base my reference points on. On the map there is reference to: Scale 1:...
3
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1answer
204 views

Upside down result when I use QGis to georeference 1977 S. African Land Survey Maps of Namibia

I'm trying to georeference some maps of Namibia and am having trouble. The projection stated on the map is the "Gauss Conform Central Meridian 15deg E. Bessel's Spheroid". I've tried using South ...
2
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1answer
134 views

Correct Coordinate Referencing System for QGis Georeferencing of 1977 S. African Land Survey Maps

I'm trying to georeference some maps of Namibia and am having trouble. The projection stated on the map is the "Gauss Conform Central Meridian 15deg E. Bessel's Spheroid". I've tried using South ...
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1answer
38 views

Finding location from image

if I have this google earth screenshot like this, is there a way I can match it to its location? I know for a fact that it is somewhere in Nevada. I believe it is current and not historical imagery.
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1answer
212 views

What CRS to use for UTM 36K Georeferencing?

I’m trying to georeference some old scanned maps in QGIS, but I’m not sure what CRS I should be using. The legends on the maps say: Numbered lines indicate the 1,000 metre Universal Transverse ...
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0answers
212 views

Seeking example .PRJ file using WKT syntax for Concat_MT?

I've been digging into the WKT format definition found here:WKT Format with the aim of defining a PRJ with two chained affine transforms to go from a known projected system to a local grid. I've been ...
2
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1answer
238 views

Generating world files for a set of non-georeferenced rasters using QGIS?

I have a set of topographic sheets in a form of non-georeferenced *.bmp rasters, and a shapefile representing footprints of those topographic sheets. What I need to do is to using corresponding ...
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1answer
109 views

Creating a raster mosaic from multiple un-referenced jpegs

I have multiple historical aerial photographs that I would like to use to compare coastal change over time in relation to urban development. The aerials I have obtained come in tiles that are not ...
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0answers
225 views

Unable to activate GDAL Georeferencer in QGIS

I have installed QGIS 2.14 on my MacBook Air, but am unable to activate the "Georeferencer GDAL" plugin. When I open the "Manage and Install Plugins" dialog, the Georeferencer GDAL plugin is listed ...
2
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1answer
139 views

Georeferencing in QGIS?

When I work with ArcGIS and georeference a picture, my picture (Tif) remains the same but new files are being created: .tfwx .aux (XML) .ovr The data of georeferenced picture are being stored within ...
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0answers
118 views

Use non-georeferenced raster with reference grid in QGIS 2.14

I have on one side a set of images in raster, which are not having any spatial reference, and on the other side a grid with spatial references. Each image supposedly fit perfectly in a cell of the ...
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1answer
201 views

QGIS Georeferencer add point tool doesn't function

Using the Georeferener, after selecting the add point tool (to add a GCP) I am unable to place a CGP onto the image. Clicking the mouse pointer does not add a GCP as is has done when I've used ...
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2answers
71 views

Georeferencing a raster

I processed a tiff DEM (I call it A) in MATLAB and the result (I call it B) loses its georeferencing information. Now I imported B in the ArcMap again and need to overlay it on A (georeferenced) in ...
2
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1answer
902 views

Georeferencing LIDAR scans in CloudCompare?

I've got several LiDAR scans in local coordinates (point cloud with an arbitrary 0,0 as origin) that I would like to reference to real world coordinates. I've tried to Align the scan in CloudCompare ...
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1answer
134 views

Open Georeferencer and load raster at startup

I would like to start QGIS from the command line. At startup the Georeferencer Plugin dialog should automatically appear and a predefined raster should be loaded. What's the best and most simple way ...
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2answers
166 views

How to keep spatial information after raster processing of satellite data in r

In R raster package i write an image in tiff format after certain raster processing but the spatial information is missing of new image. That's why i have to geo-reference the image again. How this ...
1
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2answers
115 views

In OL3 can I adjust the georeferencing of layers I source from elsewhere

I have an OL3 application that works well, and I can source raster maps from many sources. They are already georeferenced by their suppliers and work well in general. However my application is aimed ...
2
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1answer
500 views

Total station data

I have data from a total station representing the various points on an archaeological site. The data is in an excel spreadsheet, and I have managed to import it into QGIS as a .CSV file. I also have ...
5
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1answer
261 views

QGIS Georeferencer plugin TIF format problems

I'm recently new to QGIS, and have been using it to georeference some photos for a physics thing. Sadly I seem to have a pretty poor handle on using TIF files with it. When I load up a jpg image, it ...