If you have a scanned map image, and know the geographic coordinates of the upper left and lower right corner, plus the image dimensions in pixels, the online World File Calculator will generate a worldfile for that image that you can use to load it into a GIS editor or image viewer:
Copy and paste the text in the “worldfile” section into a text editor, then save it with the appropriate file extension as described above on the right.
One major caveat: you need to make sure the coordinate system you use matches the projection of the map image, e.g. UTM coordinates for a UTM projection; geographic coordinates (lat/long) for a geographic projection (Plate Carree), etc.. If you use the wrong coordinate system to generate the worldfile, that’s likely to introduce large errors into your calibration.
Related posts:
- Worldfile Basics
- Embedding And Extracting Worldfile Data With The TatukGIS Viewer
- A New GUI For The Libgeotiff Worldfile Utilities
- Embedding And Extracting Worldfiles With MicroDEM
- An Online KML Validator
- Another TIFF Worldfile/Metadata Program
- A Free And Easy Shapefile Coordinate Converter
- The Big List Of Image Registration / Georeferencing Software
- Extracting TritonRMP Calibration Data From A GeoTiff
- Handling TIFF WorldFiles With GeoTiffExaminer
- Online Coordinate Conversion And EPSG Code Lookup
- Reprojecting Raster Imagery II – ERDAS Viewfinder
- TritonRMP Helper Upgraded To Version 2.0
- Map Warper – Georeference And Export A Raster Image
- Free Tools For Custom Garmin Vector Maps IX: GlobGPS Helper
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