feat(sam3): add class_mapping support to SAM3 v3 block#2196
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feat(sam3): add class_mapping support to SAM3 v3 block#2196felipe-tomino wants to merge 2 commits intomainfrom
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felipe-tomino
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PawelPeczek-Roboflow,
dkosowski87,
grzegorz-roboflow,
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probicheaux and
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Add an optional `class_mapping` parameter to the SAM3 v3 workflow block
that remaps prediction class names before returning results.
This enables Rapid to send English prompts to SAM3 for optimal detection
while returning the user's original class names (e.g., non-English terms)
in the API response. For example, SAM3 detects with prompt "cat" but
returns predictions with class "gato" when class_mapping={"cat": "gato"}.
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dkosowski87
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Apr 2, 2026
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Could we add also a test for the whole workflow block with this scenario pls.
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Summary
Adds an optional
class_mappingparameter to theroboflow_core/sam3@v3workflow block that remaps prediction class names before returning results.Use case: Rapid's non-English users type class names like "gato" (Spanish for cat). SAM3 works best with English prompts, so Rapid sends "cat" as the prompt but needs the API to return predictions with
class: "gato"— what the user expects.How it works:
class_mapping: Dict[str, str](e.g.,{"cat": "gato"})class_namevalues are remappedNonedefault — no behavior change for existing workflowsChanges
inference/core/workflows/core_steps/models/foundation/segment_anything3/v3.pyclass_mappingfield toBlockManifestclass_mappingparameter torun()method_apply_class_mapping()static method that remapsclass_nameinsv.Detectionsdatatests/workflows/unit_tests/core_steps/models/foundation/test_segment_anything3_v3.py(new)Test plan
pytest tests/workflows/unit_tests/core_steps/models/foundation/test_segment_anything3_v3.py