Feature-based volumetric terrain generation and decoration. IEEE Transactions on Visualization and Computer Graphics, (25)2:1283--1296, 2019. [PUMA: visualisation, representations, rendering, two-dimensional curve-based modelling rendering surface, graphics), input Rendering field, (computer fields, complete GPU, Splines modelling, vertical mapping, sparse texture, toolset, structure, offline workflow, real-time graphics, common layers, feature displays, features, feature-based diffusion, surface Ptex, curves, primitives, (mathematics), data, large-scale volumetric multiple Three-dimensional Tools, prominent diffusion-based Terrain, modeling, data scale spline interactive structures, representation generation, manual three-dimensional algorithms, computer extraction, terrain Computational height]