Reconstructing the World’s Museums: Supplementary Material

CSG model manipulation also allows us to lower back-facing walls to improve visibility from a specific viewing angle (See Fig. 1). Let v be the viewing direction, for which the model is to be optimized, and denote hf and hb as the maximum height of the structure to be reconstructed for the front-facing and back-facing walls, respectively. For each primitive, we translate the primitive along each of the XYZ axes along v direction by ∆(= 0.5m). Let us denote this translated model as T v , then (T v − T up) − Rect(hf ) generates front-facing facades with the height limited at hf . Similarly, let v be the inverted reflection vector of v against the ground plane, then the back-facing facades are modeled by (T v − T up)− Rect(hb). The finally view-dependent 3D model is obtained by taking their union: