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import os
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from typing import Dict, Optional
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from detectron2.config import CfgNode
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def is_relative_local_path(path: str) -> bool:
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path_str = os.fsdecode(path)
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return ("://" not in path_str) and not os.path.isabs(path)
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def maybe_prepend_base_path(base_path: Optional[str], path: str):
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"""
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Prepends the provided path with a base path prefix if:
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1) base path is not None;
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2) path is a local path
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"""
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if base_path is None:
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return path
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if is_relative_local_path(path):
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return os.path.join(base_path, path)
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return path
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def get_class_to_mesh_name_mapping(cfg: CfgNode) -> Dict[int, str]:
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return {
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int(class_id): mesh_name
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for class_id, mesh_name in cfg.DATASETS.CLASS_TO_MESH_NAME_MAPPING.items()
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}
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def get_category_to_class_mapping(dataset_cfg: CfgNode) -> Dict[str, int]:
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return {
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category: int(class_id)
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for category, class_id in dataset_cfg.CATEGORY_TO_CLASS_MAPPING.items()
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}
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