PACO: Parts and Attributes of Common Objects

Vignesh Ramanathan, Anmol Kalia, Vladan Petrovic, Yiqian Wen, Baixue Zheng +9 more
2/14/2026

No official code found. Best implementation: facebookresearch/paco (304 stars, MIT, last commit 2024-02-12).

Abstract

Object models are gradually progressing from predicting just category labels to providing detailed descriptions of object instances. This motivates the need for large datasets which go beyond traditional object masks and provide richer annotations such as part masks and attributes. Hence, we introduce PACO: Parts and Attributes of Common Objects. It spans 75 object categories, 456 object-part categories and 55 attributes across image (LVIS) and video (Eg04D) datasets. We provide 641K part masks an-notated across 260K object boxes, with roughly half of them exhaustively annotated with attributes as well. We design evaluation metrics and provide benchmark results for three tasks on the dataset: part mask segmentation, object and part attribute prediction and zero-shot instance detection. Dataset, models, and code are open-sourced at https://github.com/jacebookresearch/paco.

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Code Implementations(1)

MIT

This repo contains documentation and code needed to use PACO dataset: data loaders and training and evaluation scripts for objects, parts, and attributes prediction models, query evaluation scripts, and visualization notebooks.

30415Python, Jupyter NotebookJan 3, 20232 years agoMIT

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Cite this paper

@article{ramanathan2026paco,
  title  = {PACO: Parts and Attributes of Common Objects},
  author = {Vignesh Ramanathan and Anmol Kalia and Vladan Petrovic and Yiqian Wen and Baixue Zheng and Baishan Guo and Rui Wang and Aaron Marquez and Rama Kovvuri and Abhishek Kadian and Amir Mousavi and Yi-Zhe Song and Abhimanyu Dubey and D. Mahajan},
  year   = {2026},
  eprint = {2301.01795},
  archivePrefix = {arXiv},
  url    = {https://arxiv.org/pdf/2301.01795},
  journal = {CVPR 2023 2023}
}

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