A 2D visualization approach for ensembles of images comprising RGB and luminescence photographs is traditionally used for studying the structure and chemistry of 3D polychrome ancient objects. Here, a method is presented for visualizing material composition of an object in 3D, providing artistic production information, conservation history, and virtual enhancement of faded, concealed and weathered decoration. The approach is based on the fusion of 2D luminescence forensic photographs with RGB images acquired using principles of structure-from-motion photogrammetry to build 3D models. Its potential is demonstrated in a study of a polychrome Hellenistic terracotta funerary head vase, in which three models of the vase were produced: (1) photorealistic; (2) visible-induced luminescence, mapping Egyptian blue and madder lake; and (3) ultraviolet-induced visible luminescence, revealing surface condition and previous conservation interventions. The workflow advances current approaches in modeling chemical signatures of luminescent pigments, extending their traditional 2D viewing platform into 3D.

包含 RGB 和发光照片的图像集合的 2D 可视化方法传统上用于研究 3D 多色古代物体的结构和化学。在这里，提出了一种方法，用于在 3D 中可视化对象的材料成分，提供艺术制作信息、保护历史以及褪色、隐藏和风化装饰的虚拟增强。该方法基于 2D 发光法医照片与使用结构-运动摄影测量原理获取的 RGB 图像的融合，以构建 3D 模型。对多色希腊陶土陪葬头花瓶的研究证明了它的潜力，其中制作了三种花瓶模型：(1) 逼真；(2) 可见光诱导发光，绘制埃及蓝和茜草湖；(3) 紫外线诱导的可见光发光，揭示表面状况和以前的保护干预措施。该工作流程推进了当前模拟发光颜料化学特征的方法，将其传统的 2D 观察平台扩展到 3D。