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---
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).
---
## 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.
---
## 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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