Scale-Invariant Features on the Sphere.

Peter Hansen Peter Corke Wageeh Boles Kostas Daniilidis Scale-Invariant Features on the Sphere. 1-8 2007 ICCV http://dx.doi.org/10.1109/ICCV.2007.4408893 conf/iccv/2007 db/conf/iccv/iccv2007.html#HansenCBD07