Comment Reverse engineering painter/photographer location (Score 1) 124
We have no idea where many photographs were taken. Also, there are many old paintings with poor titles such as "Landscape at Dawn/Sunset".
By scanning images with definable features (e.g. two hills, river in the foreground, somewhere in France), it shouldn't be that hard to exhaustively search the SRTM data for possible location matches- especially if individuals could enrich the scanned data by providing height or distance estimates?