Map Rectification
So, what did I do with my weekend?
Built a web-based map rectification system.
‘A what?’, says the masses.
The service will allow you to upload an image, and using a reference map, you can select ground control points — points from the reference map which match up to the uploaded image — and then warp the image. You can use any of a number of default base maps to reference against, or add your own WMS or KaMap layers to the map and use them to find ground control points.
Warping the image creates two kinds of output: a GeoTIFF, which can be downloaded for use in desktop GIS. Also, a WMS URL is provided for copy-and-pasting into OpenLayers applications.
Read more about it in the new MetaCarta Labs Weblog, and try it out for yourself!