Media Server 25.3
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# WorldDimensionsMetadata

The name of a metadata field, in the training database, that describes the actual size of an object class (when the Input is from object class recognition) or vehicle model (when the Input is from vehicle model recognition).

The metadata field must contain three numbers - the height, length, and width of the object or vehicle (in that order, separated by spaces). You can use any units, but you do not specify the units and you must use the same units for all perspective features. For example, to specify that objects in the class "car" are 1.55m high, 4.3m long, and 1.8m wide, the metadata field would contain the value `1.55 4.3 1.8`.

You can model objects and vehicles as cuboids, by setting a positive value for all three dimensions. If you set one or two of the dimensions to zero, the object or vehicle is modeled as a rectangle or line. If you do not add the metadata field to an object class or vehicle model, or set all dimensions to zero, the class or model is not used for estimating perspective.

For more information about using perspective in media analysis, see Use Perspective in Media Analysis.

Type: | String
Default: |
Required: | Yes, unless you set WorldDimensions
Configuration Section: | TaskName
Example: | `WorldDimensionsMetadata=dimensions(m)`
See Also: | FieldOfView WorldDimensions

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Version 25.3 | Last updated July 2025

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Product: Knowledge Discovery Media Server 25.3

Topic Title: WorldDimensionsMetadata