Source: how the CamStack YOLO builds are made

This folder is the Corresponding Source under the GNU AGPL-3.0 for the Ultralytics-derived weights in this mirror (objectDetection/yolo26, objectDetection/yolov9, segmentation/yolo26-seg, plateDetection/yolov8-plate). The full source offer, including what these scripts do not reproduce yet, is in THIRD_PARTY_MODELS.md.

File	What it is
`build-camstack-models.py`	Builds the `camstack-*` YOLO set from the upstream Ultralytics checkpoints: ONNX with a dynamic batch axis, CoreML (FP16, flexible batch 1..16), OpenVINO IR FP32 and FP16, and OpenVINO NNCF INT8 when calibration images are present.
`convert_lib.py`	The converter `build-camstack-models.py` imports: ONNX to OpenVINO IR (`ov.convert_model`), NNCF INT8 post-training quantisation, ONNX to CoreML, and validation of every IR. It is the same file CamStack's Model Studio runs at runtime.
`requirements.txt`	Python dependencies of `convert_lib.py`, with per-platform markers (OpenVINO/NNCF off macOS, coremltools/torch on macOS).
`export-models.py`	The older bulk exporter (Ultralytics `export()` to ONNX, CoreML, OpenVINO, TFLite) for the YOLOv8, YOLOv9 and YOLO11 ids. Self-contained.

Rebuilding

python3 -m venv .venv && . .venv/bin/activate
pip install -r requirements.txt ultralytics
# optional, for the INT8 builds: a folder of calibration images (e.g. a COCO val subset)
export CAMSTACK_CALIB_DIR=./calibration-images
python build-camstack-models.py

The script downloads each upstream checkpoint (yolo26n.pt, yolov9t.pt, ...) from Ultralytics on first use, finds convert_lib.py next to itself, and writes the results to ./exported-models/. The model list and input sizes are the MODELS table at the top of the script; the other hosted sizes are the same calls with a different model id or imgsz. CoreML export needs macOS; the OpenVINO steps need Linux or Windows on x86.

Licences

These scripts (build-camstack-models.py, convert_lib.py, export-models.py, requirements.txt) are CamStack's own code and are offered under the MIT licence.
The weights they produce keep their upstream licence. The Ultralytics checkpoints are AGPL-3.0 (LICENSES/AGPL-3.0.txt), and so is every file derived from them in this mirror. Nothing here is relicensed; see LICENSE and each folder's README.md.