This software package estimates what is the probability of the sun given the sky appearance. 
This corresponds to Section 3.1 in our ICCV 2009 paper.

Take a look at the file 'demoIlluminationFromSky.m' first.

Requires:
- the 'parseargs' matlab function by Malcolm Wood available at:
http://www.mathworks.com/matlabcentral/fileexchange/10670-parseargs-simplifies-input-processing-for-functions-with-multiple-options

- the 'lightspeed' package by Tom Minka available at:
http://research.microsoft.com/en-us/um/people/minka/software/lightspeed/

- my sky model code available at:
http://www.cs.cmu.edu/~jlalonde/software.html#skyModel