README.md

metadata

dataset_info:
  features:
    - name: image_path
      dtype: string
    - name: file_name
      dtype: string
    - name: image_id
      dtype: int64
    - name: annotation_id
      dtype: int64
    - name: category_id
      dtype: int64
    - name: category_name
      dtype: string
    - name: keypoints
      list: float64
    - name: bbox
      list: float64
    - name: iscrowd
      dtype: int64
    - name: area
      dtype: float64
  splits:
    - name: train
      num_bytes: 84650208
      num_examples: 157298
    - name: validation
      num_bytes: 10581683
      num_examples: 19663
    - name: test
      num_bytes: 10580603
      num_examples: 19661
  download_size: 71179531
  dataset_size: 105812494
configs:
  - config_name: default
    data_files:
      - split: train
        path: data/train-*
      - split: validation
        path: data/validation-*
      - split: test
        path: data/test-*

Brazilian Jiu-Jitsu (BJJ) Positions Dataset

Overview

This dataset contains annotated images for Brazilian Jiu-Jitsu (BJJ) positions such as guard, mount, side control, turtle, takedown, and standing.
Each annotation provides category labels, bounding boxes, and keypoints in COCO-style format.

The dataset has been pre-split into:

• train (80%)
• validation (10%)
• test (10%)

Splits were performed per-category by percentage (so each class is represented proportionally in all splits).

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Data Format

Each sample contains the following fields:

• image_path: Local path to the image (may not be valid on Hub, provided for reference).
• file_name: File name of the image.
• image_id: Unique image identifier.
• annotation_id: Unique annotation identifier.
• category_id: Integer ID for the BJJ position.
• category_name: Human-readable label (e.g. "mount1", "closed_guard2", "standing").
• keypoints: 17 keypoints [x, y, v] (COCO style; v=0 not labeled, 1 labeled but not visible, 2 visible).
• bbox: [x, y, w, h] bounding box.
• iscrowd: Standard COCO flag.
• area: Area of the bounding box.
• image_url (optional): If provided, a URL for downloading the image.

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Statistics

Approximate distribution (train/val/test combined):

• Total samples: ~196k
• Number of classes: 18 (BJJ positions)
• Example classes:
  • standing
  • mount1, mount2
  • closed_guard1, closed_guard2
  • turtle1, turtle2
  • 5050_guard
  • side_control1, side_control2
  • open_guard1, open_guard2
  • takedown1, takedown2
  • half_guard1, half_guard2
  • back1, back2

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