Sbert, Mateu2014-10-212014-10-2119931467-8659https://doi.org/10.1111/1467-8659.1230409Monte Carlo techniques have been widely used in rendering algorithms for local integration. For example, to compute the contribution of a patch to the luminance of another. In the present paper we propose an algorithm based on Integral geometry where Monte Carlo is applied globally. We give some results of the implementation to validate the proposition and we study the error of the technique, as well as its complexity.10.1111/1467-8659.1230409409-420