Optimizations for hierarchical levels of detail generation on large-scale polygonal scenes

V. N. Shutkin^a, N. K. Morozkin^a, V. A. Semenov^ba, O. A. Tarlapan<sup>cba

a</sup> Ivannikov Institute for System Programming of the RAS
^b Moscow Institute of Physics and Technology
^c Lomonosov Moscow State University

Abstract: Alternative levels of detail (LOD) are one of the most promising approaches to effective rendering of complex spatial 3D scenes. The approach has been realized in the hierarchical levels of detail (HLOD) and hierarchical dynamic levels of detail (HDLOD) methods, which are currently well studied and successfully applied for conservative and interactive rendering of large dynamic scenes. At the same time, the issues of efficient generation of levels of detail, which are critical in a number of applications related to visual modeling of complex industrial projects and large-scale infrastructure programs, have not received due attention. The paper considers emerging techniques for accelerating HLOD and HDLOD generation. It also discusses the possibility of quickly updating hierarchical levels of detail, taking into account permanent local changes in the three-dimensional model, typical for collaborative applications.

Keywords: hierarchical levels of detail, hierarchical dynamic levels of detail, clustering, parallel computing, geometry simplification, incremental update, hidden geometry removal, interactive rendering.

DOI: 10.15514/ISPRAS-2025-37(3)-22