3D Model. A 3D representation of an object or scene. Synonyms include: “3D Scan,” “Digital Twin,” “Hologram”, “3D Image.”

3D+ Model. A model that has more the three traditional dimensions. Other dimensions represent light fields and the way that light interacts with matter.

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. A method for creating a model of a real scene from images, where the model includes a plenoptic light field and a relightable matter field.

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 virtual environment where people and things can spatially interact.

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