Pcond and human response

Yes, there is an article accessible from my pubs list at:

http://www.anyhere.com/gward/papers.html

Larson, G.W., H. Rushmeier, C. Piatko, “A Visibility Matching Tone Reproduction Operator for High Dynamic Range Scenes,” IEEE Transactions on Visualization and Computer Graphics, Vol. 3, No. 4, December 1997.

Cheers,
-Greg