1      Definition

Position and Orientation of an Object in a Virtual Environment excluding velocity and acceleration.

2      Functional Requirements

The static subset of Spatial Attitude excluding velocity and acceleration.

3      Syntax

https://schemas.mpai.community/OSD/V1.1/data/PointOfView.json

4      Semantics

Table 1 provides the semantics of the components of Point of View. The following should be noted:

  1. Each of Position, Velocity, and Acceleration is provided either in Cartesian (X,Y,Z) or Spherical (r,φ,θ) Coordinates.
  2. The Euler angles are indicated by (α,β,γ).

Table 1 – Semantics of Point of View

Header N1 Bytes Point of View Header
– Standard-Point of View 9 Bytes The characters “OSD-OPV-V”
– Version N2 Bytes Major version – 1 or 2 characters
– Dot-separator 1 Byte The character “.”
– Subversion N3 Bytes Minor version – 1 or 2 characters
PointOfViewID N4 Bytes  Identifier of Object Point of View.
General N5 Bytes  Set of general data.
– CoordType N6 Bytes One of Cartesian, Spherical, Geodesic, Toroidal.
– ObjectType N7 Bytes One of Digital Human, Generic.
– MediaType N8 Bytes One of Speech, Audio, Visual, Audio-Visual, Haptic, Smell, RADAR, LiDAR, Ultrasound.
– Precision N9 Bytes One of single precision, double precision
PositionAndOrientation
– CartPosition (X,Y,Z) 12/24 Bytes Array (in metres)
– SpherPosition (r,φ,θ) 12/24 Bytes Array (in metres and degrees)
– Orient (α,β,γ) 12/24 Bytes Array (in degrees)
Errors
– ErrCartPosition N10 Bytes Error of CartPosition
– ErrSpherPosition N11 Bytes Error of SpherPosition
– ErrOrientation N12 Bytes Error of Orientation
DescrMetadata N13 Bytes Descriptive Metadata