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---

license: cc-by-4.0
size_categories:
- n<1K
task_categories:
- object-detection
language:
- en
pretty_name: COCO Keypoints
---


# Dataset Card for "COCO Keypoints"

## Quick Start
### Usage
```python

>>> from datasets.load import load_dataset



>>> dataset = load_dataset('whyen-wang/coco_keypoints')

>>> example = dataset['train'][0]

>>> print(example)

{'image': <PIL.JpegImagePlugin.JpegImageFile image mode=RGB size=640x360>,

 'bboxes': [

   [339.8800048828125, 22.15999984741211,

    153.8800048828125, 300.7300109863281],

   [471.6400146484375, 172.82000732421875,

    35.91999816894531, 48.099998474121094]],

 'keypoints': [[

    [368, 61, 1], [369, 52, 2], [0, 0, 0], [382, 48, 2], [0, 0, 0],

    [368, 84, 2], [435, 81, 2], [362, 125, 2], [446, 125, 2], [360, 153, 2],

    [0, 0, 0], [397, 167, 1], [439, 166, 1], [369, 193, 2], [461, 234, 2],

    [361, 246, 2], [474, 287, 2]

   ], [[...]]

 ]}

```

### Visualization
```python

>>> import cv2

>>> import numpy as np

>>> from PIL import Image



>>> def visualize(example):

        image = np.array(example['image'])

        bboxes = np.array(example['bboxes']).round().astype(int)

        bboxes[:, 2:] += bboxes[:, :2]

        keypoints = example['keypoints']

        n = len(bboxes)

        for i in range(n):

            color = (255, 0, 0)

            cv2.rectangle(image, bboxes[i, :2], bboxes[i, 2:], color, 2)

            ks = keypoints[i]

            for k in ks:

                if k[-1] == 2:

                    cv2.circle(

                        image, k[:2], 5, (0, 255, 0), 1

                    )

        return image



>>> Image.fromarray(visualize(example))

```

## Table of Contents
- [Table of Contents](#table-of-contents)
- [Dataset Description](#dataset-description)
  - [Dataset Summary](#dataset-summary)
  - [Supported Tasks and Leaderboards](#supported-tasks-and-leaderboards)
  - [Languages](#languages)
- [Dataset Structure](#dataset-structure)
  - [Data Instances](#data-instances)
  - [Data Fields](#data-fields)
  - [Data Splits](#data-splits)
- [Dataset Creation](#dataset-creation)
  - [Curation Rationale](#curation-rationale)
  - [Source Data](#source-data)
  - [Annotations](#annotations)
  - [Personal and Sensitive Information](#personal-and-sensitive-information)
- [Considerations for Using the Data](#considerations-for-using-the-data)
  - [Social Impact of Dataset](#social-impact-of-dataset)
  - [Discussion of Biases](#discussion-of-biases)
  - [Other Known Limitations](#other-known-limitations)
- [Additional Information](#additional-information)
  - [Dataset Curators](#dataset-curators)
  - [Licensing Information](#licensing-information)
  - [Citation Information](#citation-information)
  - [Contributions](#contributions)

## Dataset Description

- **Homepage:** https://cocodataset.org/
- **Repository:** None
- **Paper:** [Microsoft COCO: Common Objects in Context](https://arxiv.org/abs/1405.0312)
- **Leaderboard:** [Papers with Code](https://paperswithcode.com/dataset/coco)
- **Point of Contact:** None

### Dataset Summary

COCO is a large-scale object detection, segmentation, and captioning dataset.

### Supported Tasks and Leaderboards

[Object Detection](https://huggingface.co/tasks/object-detection)

### Languages

en

## Dataset Structure

### Data Instances

An example looks as follows.

```

{

    "image": PIL.Image(mode="RGB"),

    "bboxes": [

        [339.8800048828125, 22.15999984741211,

            153.8800048828125, 300.7300109863281],

        [471.6400146484375, 172.82000732421875,

            35.91999816894531, 48.099998474121094]],

    "keypoints": [[

        [368, 61, 1], [369, 52, 2], [0, 0, 0], [382, 48, 2], [0, 0, 0],

        [368, 84, 2], [435, 81, 2], [362, 125, 2], [446, 125, 2], [360, 153, 2],

        [0, 0, 0], [397, 167, 1], [439, 166, 1], [369, 193, 2], [461, 234, 2],

        [361, 246, 2], [474, 287, 2]

      ], [[...]]

    ]

}

```

### Data Fields

[More Information Needed]

### Data Splits

|    name |  train | validation |
| ------- | -----: | ---------: |
| default | 64,115 |      2,693 |

## Dataset Creation

### Curation Rationale

[More Information Needed]

### Source Data

#### Initial Data Collection and Normalization

[More Information Needed]

#### Who are the source language producers?

[More Information Needed]

### Annotations

#### Annotation process

[More Information Needed]

#### Who are the annotators?

[More Information Needed]

### Personal and Sensitive Information

[More Information Needed]

## Considerations for Using the Data

### Social Impact of Dataset

[More Information Needed]

### Discussion of Biases

[More Information Needed]

### Other Known Limitations

[More Information Needed]

## Additional Information

### Dataset Curators

[More Information Needed]

### Licensing Information

Creative Commons Attribution 4.0 License

### Citation Information

```

@article{cocodataset,

  author    = {Tsung{-}Yi Lin and Michael Maire and Serge J. Belongie and Lubomir D. Bourdev and Ross B. Girshick and James Hays and Pietro Perona and Deva Ramanan and Piotr Doll{'{a} }r and C. Lawrence Zitnick},

  title     = {Microsoft {COCO:} Common Objects in Context},

  journal   = {CoRR},

  volume    = {abs/1405.0312},

  year      = {2014},

  url       = {http://arxiv.org/abs/1405.0312},

  archivePrefix = {arXiv},

  eprint    = {1405.0312},

  timestamp = {Mon, 13 Aug 2018 16:48:13 +0200},

  biburl    = {https://dblp.org/rec/bib/journals/corr/LinMBHPRDZ14},

  bibsource = {dblp computer science bibliography, https://dblp.org}

}

```

### Contributions

Thanks to [@github-whyen-wang](https://github.com/whyen-wang) for adding this dataset.