cascade_teacher_yolo_swin

FishingROV Cascade Teacher Bundle (YOLO 1cls + SwinV2 384)

Single-folder, repeatable bundle for FishingROV cascade feedback runs.

• Detector: Chungus YOLO 1cls (chungus_1cls_best.pt)
• Classifier: SwinV2-B 384 clean4 (swinv2_384_best.pt)
• Runner: config-driven video inference (scripts/run_video.sh)
• Outputs: VIAME CSV + DIVE JSON + attrs + run summary

This bundle supersedes prior split usage of older 1cls detector + SwinV2-256 references for cascade testing.

Script arguments (quick reference)

Use this section first if you are wiring the bundle into your own environment.

scripts/run_video.sh

Usage:

bash scripts/run_video.sh /path/to/video.mp4 [optional_out_dir]

Arguments:

• $1 (required): video file path
• $2 (optional): output directory (defaults to runs/video_YYYYmmdd_HHMMSS)

Env override:

• CONFIG=/path/to/config.json to use a different mode config

scripts/run_images.sh

Usage:

bash scripts/run_images.sh /path/to/images_dir [optional_out_dir]

Arguments:

• $1 (required): folder containing images (.jpg/.jpeg/.png/.bmp/.webp)
• $2 (optional): output directory

Env override:

• CONFIG=/path/to/config.json to use a different mode config

scripts/run_from_config.py

Usage (video):

scripts/run_from_config.py --config config/mode_video_default.json --video-input /path/to/video.mp4

Usage (images):

scripts/run_from_config.py --config config/mode_video_default.json --images-dir /path/to/images

Arguments:

• --config (required): mode config JSON
• --video-input (required for video mode): input video path
• --images-dir (required for image mode): image-folder path
• --out-dir (optional): explicit output folder
• --skip-convert (optional flag): skip dive convert and dive verify-dive-json
• --max-images (optional): runtime override for max frames/images processed

Note:

• Provide exactly one of --video-input or --images-dir.

scripts/fetch_weights.sh

Usage:

bash scripts/fetch_weights.sh

Behavior:

• Reads weights.*.hf_url and weights.*.local from config
• Downloads missing weights only

Env override:

• CONFIG=/path/to/config.json to fetch from a different config

Dependencies and setup

Python/runtime dependencies

• Python 3.11+
• numpy
• torch
• ultralytics
• timm
• torchvision
• opencv-python
• Pillow
• pyyaml

Install example:

python -m pip install numpy torch ultralytics timm torchvision opencv-python Pillow pyyaml

Optional CLI dependency

• dive CLI is required only when conversion/verification is enabled.
• If dive is unavailable, run with --skip-convert.

Paths you may need to change

Edit config/mode_video_default.json:

• paths.python: Python executable for your environment
• paths.infer_script: path to infer_cascade_yolo_swin_to_viame.py
• paths.dive_bin: dive binary name/path
• weights.*.local: local weight paths
• weights.*.hf_url: remote weight URLs

Hardware configuration and tuning

All hardware tuning is done in config/mode_video_default.json under runtime and video.

Main runtime knobs:

• runtime.conf: detector confidence threshold (default 0.1 for reported comparison)
• runtime.imgsz: detector inference size (higher = more compute, often better recall)
• runtime.yolo_batch: detector batch size
• runtime.cls_batch: classifier batch size
• runtime.max_images: cap on total processed frames/images (0 = no cap)
• video.fps_sample: sampling rate for video frame extraction

Recommended starting points by hardware class:

• Low-memory CPU or small GPU:
  • set runtime.yolo_batch=1
  • set runtime.cls_batch=2 to 4
  • reduce runtime.imgsz (for example 960)
  • reduce video.fps_sample if throughput is low
• Mid-range GPU:
  • keep runtime.yolo_batch=1
  • set runtime.cls_batch=8 to 16
  • keep runtime.imgsz=1280 if memory allows
• High-memory GPU:
  • increase runtime.cls_batch first
  • optionally raise runtime.yolo_batch to 2 if stable
  • keep the detector at runtime.conf=0.1 if you want comparability with card metrics

If running on different cameras or panel geometry, update:

• runtime.left_xmin, runtime.left_xmax
• runtime.right_xmin, runtime.right_xmax
• runtime.roi_ymin, runtime.roi_ymax

If matching/merge behavior needs adjustment, update:

• runtime.merge_iou

If class balance or operating point differs, update:

• runtime.class_thresholds (format: king=...,queen=...,dead=...,not_a_scallop=...)

Preliminary held-out cascade metrics

Status: PRELIMINARY / NOT INDEPENDENTLY VERIFIED.

These are internal station-disjoint held-out metrics from the current pipeline experiment log and are provided for early feedback, not as a final benchmark.

Held-out split: scallop_lr_teacher_1280_v2_heldout_4cls test subset.

Detector stage for the comparison below is run at conf=0.1.

Cascade decision rule used for these metrics:

• per-class weighted normalized argmax on classifier softmax,
• argmax(softmax_prob[class] / class_threshold[class]),
• thresholds: king=0.1, queen=0.7, dead=0.14, not_a_scallop=1.0.

Reference source in project experiments log: EXP-2026-06-16-PIPELINE-CONF-0P1-NORMARGMAX.

Comparison context (same held-out split)

Bundle default runtime config also uses detector conf=0.1.

Global classifier-threshold sweep (matched detections, same run):

• best global threshold: 0.35
• precision: 0.852
• recall: 0.992
• F1: 0.917

Interpretation caveat:

• Cascade rows and detector-only rows answer different deployment questions. Treat this as deployment-oriented internal evidence, not an external benchmark claim.

HF weights

Bundle repo:

• https://huggingface.co/FishingROV/cascade_teacher_yolo_swin

Direct weight links:

• Detector (Chungus 1cls): https://huggingface.co/FishingROV/cascade_teacher_yolo_swin/resolve/main/weights/chungus_1cls_best.pt
• Classifier (SwinV2 384): https://huggingface.co/FishingROV/cascade_teacher_yolo_swin/resolve/main/weights/swinv2_384_best.pt

Contents

• config/mode_video_default.json: default runtime mode
• scripts/run_video.sh: one-command entrypoint
• scripts/run_from_config.py: config runner
• scripts/fetch_weights.sh: HF weight fetch helper
• experimental/with_viame/cascade_teacher_yolo_swin.pipe: experimental VIAME/KWIVER pipeline scaffold
• experimental/with_viame/README.md: outstanding requirements for drop-in DIVE compatibility
• weights/chungus_1cls_best.pt (local optional cache, ignored by git)
• weights/swinv2_384_best.pt (local optional cache, ignored by git)

Experimental VIAME .pipe scaffold

If your goal is DIVE Web/Desktop pipeline integration, start with:

• experimental/with_viame/cascade_teacher_yolo_swin.pipe
• experimental/with_viame/README.md

Important:

• This .pipe is intentionally marked experimental and is not guaranteed drop-in across all VIAME builds.
• The README in that folder lists outstanding requirements to reach true drop-in compatibility.

Dependencies

• Python 3.11+ with:
  • numpy
  • torch
  • ultralytics
  • timm
  • torchvision
  • opencv-python
  • Pillow
  • pyyaml
• DIVE CLI (dive) for optional conversion/verify.

Quick run

bash scripts/run_video.sh /path/to/video.mp4

Optional explicit output directory:

bash scripts/run_video.sh /path/to/video.mp4 /path/to/output_dir

Run on an image folder:

bash scripts/run_images.sh /path/to/images_dir

Optional explicit output directory (images):

bash scripts/run_images.sh /path/to/images_dir /path/to/output_dir

Attribution & License

This model bundle is a derivative work based on the University of St Andrews King Scallop dataset.

• Original DOI: 10.5281/zenodo.10156830

In accordance with the original dataset's terms, this derivative work is released under the Creative Commons Attribution 4.0 International (CC-BY 4.0) license. You are free to share and adapt this material, provided you give appropriate credit to the original authors and indicate if changes were made.

NatureScot attribution note:

• FishingROV development context includes collaboration and field framing aligned with NatureScot fisheries/scallop-survey objectives. This bundle does not include proprietary NatureScot raw assets; it packages trained cascade weights and reproducible inference tooling derived from the attributed St Andrews source lineage that was sourced from NatureScot assets.