@article { 534,
title = {A Theory of Frequency Domain Invariants: Spherical Harmonic Identities for BRDF/Lighting Transfer and Image Consistency},
journal = {IEEE Transactions on Pattern Analysis and Machine Intelligence (PAMI)},
volume = {30},
number = {2},
year = {2008},
month = {Feb},
pages = {197-213},
URL = {http://www.cs.columbia.edu/cg/freqinvpami/},
author = {Dhruv Mahajan and Ravi Ramamoorthi and Brian Curless}
}