Principle:Obss Sahi Detectron2 Config Export
| Knowledge Sources | |
|---|---|
| Domains | Object_Detection, Configuration |
| Last Updated | 2026-02-08 12:00 GMT |
Overview
Technique for serializing Detectron2 in-memory configuration objects to persistent YAML files for reproducibility and sharing.
Description
Detectron2 uses a hierarchical CfgNode configuration system that is built programmatically by merging base configs and overrides. Config Export captures the fully resolved configuration state and writes it to a standalone YAML file. This enables configuration versioning, sharing between team members, and reloading without re-executing the programmatic build steps.
Usage
Apply this principle after building a Detectron2 configuration programmatically, when you need to persist the final resolved config for later reuse, experiment tracking, or deployment.
Theoretical Basis
The approach relies on:
- CfgNode.dump(): Serializes the entire nested config tree to a YAML string
- Idempotent reload: The exported YAML can be loaded back via CfgNode.merge_from_file()
- Directory creation: Ensures parent directories exist before writing
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