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Pycococreator

Pycococreator is a Python library of helper functions for creating COCO-format computer-vision datasets, including polygon annotations and uncompressed RLE annotations for crowd regions.

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Independent OpenViST project profile, based on linked sources.

Pycococreator — OpenViST project profile in AI Data & Analytics.
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Understand the project

Practical overview

When it fits

Use it during dataset preparation when annotations need to be represented in COCO's polygon or uncompressed RLE formats.

Who it is for

  • Computer-vision practitioners preparing datasets for COCO-compatible workflows.
  • Python developers who need helper functions for COCO polygon or crowd-region RLE annotations.

Documented uses

  • Prepare a computer-vision dataset in COCO format.
  • Generate polygon annotations in the format required by COCO.
  • Generate uncompressed RLE annotations for crowd regions.
Before you choose

Requirements & limits

  • The README documents installation from the Git repository at version 0.2.0.
  • The README includes separate setup steps for pycocotools on Python 3: install python3-dev, Cython, and the specified coco package.
  • The project is identified as Apache-2.0 licensed.

Check current requirements in the official documentation. Source-based guidance does not mean OpenViST has run or independently tested this project.

Source-based practical guide

Install pycococreator 0.2.0

Install pycococreator from its GitHub repository using the documented pip command.

Before you start

  • Python environment with pip.

Steps

  1. Run the command below.

    Documented command
    pip install git+git://github.com/waspinator/pycococreator.git@0.2.0

  2. If you need pycocotools for Python 3, install python3-dev with sudo apt-get install python3-dev, then run the command below and the command below.

    Documented command
    pip install cython
    Documented command
    pip install git+git://github.com/waspinator/coco.git@2.1.0

Expected outcome

The documented installation commands are run for pycococreator, with optional Python 3 pycocotools dependencies.

Guide limitations

  • The README provides installation commands but does not document a usage workflow or a way to verify installation.
  • The Python 3 dependency instructions are conditional on needing pycocotools.
Documentation 1 ↗
Evidence and transparency

Sources & review

Official repository ↗
Source record details
Source availability
Active
Sources checked
15 October 2026
Original website title
waspinator/pycococreator · Official homepage title · retained in its source language
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