Wang, CuilanNewman, Timothy S.Lee, Jong KwanHans-Christian Hege and David Laidlaw and Renato Pajarola and Oliver Staadt2014-01-292014-01-292008978-3-905674-12-51727-8376https://doi.org/10.2312/VG/VG-PBG08/049-056Representational accuracy of the isosurface meshes produced by well-known marching isosurfacing methods is considered. Accuracy is determined versus the isosurface given by trilinear interpolation and quantified using a new measure of volumetric divergence. The new measure is an accurate estimate of spatial discrepancy between a produced mesh and the isosurface of trilinear interpolation. Through experimental testing using the measure, suitability of the considered methods to well-model the isosurface of trilinear interpolation's behavior on grid cell interiors is also established.