Geometric, Photometric, and Semantic Multi-Layer 3D Mapping Towards a Forest Digital Twin. - Dinis S. Simões; Arush Mendon; Maria Eduarda Andrada; Afonso E. Carvalho; Mário P. Cristóvão; Tobias Marsh-Hulland; Duarte Cruz; André M. Silva; Luís Gaspar; Paulo Peixoto; David Portugal; Carlos Viegas 001; et al. (ICARSC, 2026)