## Landscape inverse problems

* Oliver Knill, January 12, 2014*

A recent regex golf joke rised an inverse problem
on matching classes of words with regular expressions. Matching and inverse problems are
central in mathematics.
Here is an other inverse problem: find the best location on google earth which matches
a given photo or painting.
[ January 24, 2014: See Slate:
reconstructing a Monet Masterpiece about work of some astronomers. ]
Here is a marvelous picture of Harvard university
by Richard Rummell (1848-1924). Lets try to match it with Google Earth: