3D Model. A 3D representation of an object or Scene. Aka: “3D Scan,” “Digital Twin,” “Hologram”, “3D Image.”

3D+ Model. A model that represents the light and matter fields that exist in a real scene. 3D+ Models enable “True-to-Life” applications.

Scene. A region in space occupied by light and matter.

Plenoptic. Describes light traveling omni-directionally through positions in space. It takes five dimensions (5D) to describe something plenoptically.

Reconstruction. Means the creation of a spatial (3D, 4D or 5D) model from one or more images of a real scene. Reconstructed models can represent objects and scenes.

Generalized Scene Reconstruction. Generalized Scene Reconstruction (GSR) is a method of 3D reconstruction from multiple images wherein a scene model representing a generalized light field and a relightable matter field is created. – Popular Definition from Wikipedia

Plenoptic Light Field. A model of light flowing in all directions at all points in a scene.

Relightable Matter Field. A model of matter that represents real light interaction properties distinct from any particular light field.

Scenes of virtually Unlimited Detail. Means a scene model that can be displayed or otherwise processed to virtually unlimited levels of detail.

Metaverse. A network of digital worlds where people and things spatially exist and interact. Aka: “The Spatial Web,” or “Web 3.0.”

Serious. Requiring highly realistic modeling and processing. Examples: “serious metaverse” “serious gaming”