Ureña, CarlosFajardo, MarcosKing, AlanNicolas Holzschuch and Szymon Rusinkiewicz2015-02-282015-02-2820131467-8659https://doi.org/10.1111/cgf.12151We present an area-preserving parametrization for spherical rectangles which is an analytical function with domain in the unit rectangle [0;1]2 and range in a region included in the unit-radius sphere. The parametrization preserves areas up to a constant factor and is thus very useful in the context of rendering as it allows to map random sample point sets in [0;1]2 onto the spherical rectangle. This allows for easily incorporating stratified, quasi-Monte Carlo or other sampling strategies in algorithms that compute scattering from planar rectangular emitters.I.3.7 [Computer Graphics]Three Dimensional Graphics and RealismColorshadingshadowingand texture