High Accuracy Terrain Reconstruction from Point Clouds Using Implicit Deformable Model

Few previous works have studied the modeling of forest ground surfaces from LiDAR point clouds using implicit functions. Jules et al.’s work [Jules17] is a pioneer in this area. However, by design this approach proposes over-smoothed surfaces, in particular in highly occluded areas, limiting i … Continue reading “High Accuracy Terrain Reconstruction from Point Clouds Using Implicit Deformable Model”

GPU-based Rendering of Point-based Implicit Surfaces

Implicit surface is a well-known surface representation. Geometric details of an object can be represented using less surface primitives than other representations such as polygonal meshes. In this paper, we propose a fast and a direct rendering method of SLIM (Sparse Low-degree IMplicit) surfaces u … Continue reading “GPU-based Rendering of Point-based Implicit Surfaces”

Hierarchical Approximation of Implicit Surfaces from Meshes

This paper describes an efficient method for the hierarchical approximation of implicit surfaces from polygonal meshes. A novel error function between a polygonal mesh and an implicit surface is proposed. This error function is defined so as to be scale-independent on its global behavior as well as … Continue reading “Hierarchical Approximation of Implicit Surfaces from Meshes”