Identify Individual Koalas
from a Single Photograph

SLOOP is a field-tested, non-invasive monitoring platform that identifies individual koalas using nose-pattern recognition, with human-in-the-loop relevance feedback for continuously improving accuracy.

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A collaboration between
  • Massachusetts Institute of Technology (MIT), USA
  • Koala Island Foundation, Australia
  • Instituto Politécnico Nacional (IPN), Mexico
A koala in the wild

Non-invasive, Photo-based Koala Identification

The dorsal nose pattern of each koala is unique and remains stable across its lifetime, providing a reliable biometric marker for individual identification. SLOOP performs photo-identification on this pattern: the nose is localised in a submitted image and matched against a reference catalogue of previously identified individuals, returning the closest candidates for verification. The system is currently in field use on Raymond Island, Victoria.

Nose-pattern Recognition

An identification algorithm compares the nose pattern of a newly photographed koala against reference images in the database and returns a ranked list of candidate matches.

Human-in-the-loop

The highest ranked candidate matches are reviewed by a human expert to confirm the individual's identity and resolve ambiguous cases.

Learn more about SLOOP

System Tools

Interfaces for the koala identification workflow.

Meet the Team

The people behind the Sloop Koala identification system.

Sai Ravela

Dr. Sai Ravela

Lead Investigator

Principal Research Scientist at MIT EAPS and Director, Earth Signals and Systems Group (ESSG). Pioneer in computer vision and machine learning, image and pattern retrieval for individual animal identification in wildline monitoring and conservation.

Joaquin Salas

Dr. Joaquin Salas

Researcher

Computer-vision researcher at IPN, Mexico. Contributes to feature extraction, scoring methods, and deployment.

Pablo Vera

Dr. Pablo Vera

Researcher

Researcher at IPN working on scoring algorithms for koala identification.

David Peile

Mr. David Peile

Researcher

Field researcher with the Koala Island Foundation, Australia. Bridges conservation field work with system requirements and identity validation.

Bhavya Thacker

Mr. Bhavya Thacker

Researcher

Research affiliate at MIT ESSG working on systems operations and the relevance feedback implementation.

Get in Touch

Questions about a submission, or want to help improve koala identification? We'd love to hear from you. Email us at

sloopkoala@mit.edu