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1

ENVI_OPEN_FILE can open a georeferenced image. You should use ENVI_GET_MAP_INFO function to get the map information. You can see this webpage


2

I had the same problem. This should solve the bug (QGIS 2.6 under Windows): close QGIS using regedit.exe, search for "Plugin-GeoReferencer". This should point to a folder under \HKEY_CURRENT_USER\Software\QGIS\QGIS2\Plugins (optional: export a .reg version of the folder for back-up) delete the folder "Plugin-Georeferencer" restart QGIS. Georeferencer ...


1

I had the same problem. This should solve the bug (QGIS 2.6 under Windows): close QGIS using regedit.exe, search for "Plugin-GeoReferencer". This should point to a folder under \HKEY_CURRENT_USER\Software\QGIS\QGIS2\Plugins (optional: export a .reg version of the fodler for back-up) delete the folder "Plugin-Georeferencer" restart QGIS. Georeferencer ...


1

At first, you should distinguish "georeferenced rasters" from "non georeferenced raster". The second group includes all the raw image acquisitions from remote sensing (aerial photographs, satellite images, UAV images) or scanners. Those raw images will be captured according to the sensor orientation, which is rarely North up. They are affected by geometric ...


1

I had some damaged GeoTiff files. What happened is that a person ran the GeoTiff through Photoshop. Photoshop and most other drawing problems ignore the GeoTiff part of the tiff file and wind up bashing the spatial information in the header. You do not say what tools you have available. What I did to fix the problem was to use the coordinates that I ...


1

QGIS and ArcGIS use two different file extensions for a .PNG image's world file. When you georeference a PNG in ArcGIS, it generates a .PGWX file containing the spatial information for the PNG. QGIS uses the extension .PNGW instead. You can just rename your image's .PGWX files to .PNGW files and they should come in to QGIS correctly.


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If you use Google hybrid as reference Map (supposed by using the QGIS Openlayers plugin) , the CRS should be set to EPSG:3857. If you want to use lat/lon coordinates as reference, you must have a datasource that is in EPSG:4326, or read out the coordinates from an imprinted graticule and enter them manually.


3

In layman's terms, using known locations/monuments in order to georectify your map/image. Georectify: To take an image that has not been adjusted to be in a known coordinate system, and put it into a known coordinate system.


0

Found an answer myself... It so happens that SpecTIR releases these GLT (Geographic Lookup Table) and IGM (Input Geometry) files along with the Radiance image file for georeferencing, as a georeferenced image is much heavier than the available 100-150 MB files on the website. The datasets are fantastic, for freely available information. Georeferencing ...


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Ok the less technical answer is as follow: Your sample has a lat/lon grid which I am almost certain will be WGS84, grab 4 corners that have clearly lat/lon labelled and georeference considering those points and WGS84 data, you could add a few more points since its a grid to minimize distortions By the way you should just download QGIS from www.qgis.org its ...


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Georeferencing raster datasets like your JPG files should be straightforward in ArcGIS 10.1 for Desktop. The steps and options are well documented in the Online Help under Fundamentals of georeferencing a raster dataset. I would try georeferencing to your GPS points first. I recommend giving it a try and then you will be in a position to come back to ...


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Export the image from Data View. Check the Write World file in the general tab. There you can also control the image output resolution and size. Image quality of the output will be compromised either way because you have georeferenced the image and thus altered/warped or stretched the original pixels. Work out the outptut size and resolution that closely ...


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That means that in our internal geocoder we don't have the polygon boundary for a city, just a point where it is located. As an analog example, you can check that for countries, states, counties, zipcodes (in USA; CAN; FRA; ESP; AUS) we have polygons. This just means that we don't have that information available. If you have special needs, you can contact ...



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