Figure 4
From: Enabling additive manufacturing part inspection of digital twins via collaborative virtual reality

Occlusion management with volumetric rendering in immersive VR. We implemented the colorized volume with the transfer functions and color maps. With the cutting objects, it allows users to explore the inner structures of the volumetric data smoothly, e.g., using a cross-section plane (a), sphere (b,c), or box (d,e) cutout with inclusive and exclusive modes, respectively.