All Questions
Tagged with georeferencing image
26 questions
3
votes
1
answer
153
views
Image Resolution degrading when georeferencing
I have a scan of a historical map in pdf. I converted it in to png as well as tif and then georeferenced it. However, as soon as I load the image (both png and tif) in to the georeferencing tool the ...
- 253
2
votes
2
answers
6k
views
Georeferenced raster image not appearing on map in QGIS
I imported a PNG file into QGIS for georeferencing, and set it to add automatically to map after finishing the process. However, once its job was done and the new layer and joined my list panel on the ...
- 141
4
votes
2
answers
165
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 ...
1
vote
1
answer
315
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 ...
- 111
3
votes
0
answers
783
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 ...
- 45
0
votes
1
answer
1k
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 ...
- 101
2
votes
1
answer
1k
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) ...
- 215
2
votes
1
answer
723
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?
- 29
2
votes
1
answer
6k
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 ...
- 51
3
votes
1
answer
180
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
...
- 491
1
vote
0
answers
41
views
Orthorectify large set aerial images [duplicate]
I have a large set of images that I want to stitch the together and orthorectify. They have been taken from a small aircraft. The camera of the aircraft is tilted, thereby, although gps data is ...
- 11
3
votes
1
answer
1k
views
Openlayers 3 - georeferenced ImageStatic
I am trying to display a georeferenced image (in 4326) over a Bing map in OL3. The ImageStatic is the following.
var view = new ol.View({
center: [0, 0],
zoom: 15,
...
- 61
0
votes
1
answer
448
views
Assigning latitude and longitude to a particular pixel in satellite image
Pixel of a satellite images can be assigned latitude and longitude, but how this is done as each pixel represent certain area depending on the resolution of image that can be too high to assign ...
- 3
5
votes
1
answer
7k
views
Put png map image as a background to draw upon
I have an image of a fiber optics network map:
I want to turn this map image (without any actual GIS data) into a vector map where each point is defined by lat, long.
To do this, I'm trying to ...
- 215
0
votes
1
answer
453
views
Georeference a polyygon within a pdf file [duplicate]
I have this pdf file that contains a specific borough of my city, Montreal, with a polygon inside it. Link to pdf file: PDF FILE
The jpeg image once exported from the pdf file is the following
I am ...
- 121
1
vote
1
answer
290
views
Different origin between GDAL/Python and ArcMap of a Modis image
I have a Modis image and i load this image in Python using gdal library
from osgeo import gdal, ogr
INPUT_raster_1 = "C:\\myimage_1km.tif"
ds_1 = gdal.Open(INPUT_raster_1, gdal.GA_ReadOnly)
...
- 409
2
votes
1
answer
174
views
Georeferencing an image to a Progressive JPEG
I am using the Georeferencing tool in ArcGIS 10.2 to georeference a normal JPEG image.
I want to produce a georeferenced Progressive JPEG image from that image, but there is no JPEG Progressive ...
- 1,545
0
votes
1
answer
59
views
Georeference images together
I have taken a number of images from a very large rock overhang that contains ancient paintings. I want to piece the images together to create a single image of the entire rockshelter. Through ARCGIS ...
- 193
3
votes
1
answer
2k
views
Georeferencing Image using saved Link Table from another Image?
I had a scanned map that I did did a georeferenced a few weeks ago and saved the link table. Now I have two more scanned map that need to do the same thing. It is the same area and one of them I did ...
- 4,139
0
votes
1
answer
598
views
Georeferencing image from Google Earth?
What I want to do appears simple. However, there seems to be a bug.
I have an image from GE which I want to georeference and set as a background layer. I thus set some placemarks on GE, wrote down ...
- 9
3
votes
1
answer
4k
views
Removing black box around georeferenced grayscale image in QGIS
I am trying to georeference a grayscale image (*.tif) in QGIS 2.2.0 Valmeria. It is working but QGIS draws a black box around the georeferenced raster image. If i use the option set 0 transparent, not ...
- 173
2
votes
1
answer
534
views
How to determine if an image file is georeferenced
I have a task to scan a folder for georeferenced images. There might be a lot of images, some quite large, and some not georeferenced. The spatial information can also be either embedded or in a world ...
- 21
8
votes
2
answers
2k
views
Georeferencing Photos With No Spatial Reference?
I have about 100-200 field ground shot photos I would like to overlay in ArcGIS 10 that have no spatial information which I need to somehow develop using a photogrammetric formula. The camera was ...
- 280
4
votes
2
answers
757
views
Creating georeferenced and projected data from hand-drawn map using ArcGIS Desktop?
I am preparing datasets for students in a spatial statistics course for a module on spatial autoregressive models. We will use ArcGIS 10.1. The first dataset will correspond to a mythical pre-...
- 49
2
votes
1
answer
2k
views
Determining the transformation between a satellite image and long/lat
I'm trying to overlay some data onto a satellite image of the UK.
The image is a hi-resolution version of the image below (originally from dundee university):
http://www.bbc.co.uk/news/uk-scotland-...
- 123
2
votes
1
answer
5k
views
Convert X Y Pixels to Easting Northing
I'm trying to find out what the formula would be to convert the X, Y of an image to the Easting and Northing coordinates.
I've downloaded some of the raster maps from OS UK web site and I'm looking ...
- 135