semantic-label-schema#
Code |
SL.003 |
---|---|
Validator |
|
Compatibility |
open usd |
Tags |
✅ |
Summary#
Semantic labels must use the SemanticsLabelsAPI schema
Description#
The SemanticsLabelsAPI schema must be applied correctly.
Why is it required?#
Correct usage of the SemanticsLabelsAPI ensures compatibility with open standards
Previous, proprietary implementations of semantic labeling have been used in NVIDIA Omniverse. But they are not compatible with the open standard.
Examples#
# Invalid: Wrong schema name
def Xform "Vehicle" (
prepend apiSchemas = ["SemanticsAPI:wikidata_qcode"] # Incorrect schema
)
{
token[] semantics:labels:wikidata_qcode = ["Q42889"]
}
# Invalid: Missing schema
def Xform "Car" {
# Direct attribute without schema - not valid
token[] semantics:labels:wikidata_qcode = ["Q42889"]
}
# Valid: Correct schema usage
def Xform "Truck" (
prepend apiSchemas = ["SemanticsLabelsAPI:wikidata_qcode"]
)
{
token[] semantics:labels:wikidata_qcode = ["Q42889"]
}
# Invalid: No API instance name (taxonomy)
def Xform "Tree" (
prepend apiSchemas = ["SemanticsLabelsAPI"]
)
{
token[] semantics:labels = ["Q42889"]
}
How to comply#
Apply correct SemanticsLabelsAPI schema
Use proper attribute name
Ensure schema is prepended to prim