Solid height-map sets: modeling and visualization

Abstract

Height maps are a very efficient surface representation, initially developed for terrain modeling and visualization. They are also present in other applications, such as mesostructure rendering. However, height maps are incapable of representing overhangs or self-folding surfaces, as well as several occluding objects. In this paper we propose a novel representation to overcome these limitations. A Solid Height-map Set is used to represent arbitrary solid geometry. We also describe a procedure to convert polygonal meshes into our scheme. In addition, we develop a visualization algorithm capable of efficiently rendering this novel representation and implement it using GPU programming. Results achieve an order of magnitude in memory savings as well as high performance independent of the original mesh size.