Behavior and Morphometrics

The MaRRS lab is using drone-based aerial imagery to better understand size, body condition, and behavior of marine mammals, including whales and seals.
bt_bb_section_bottom_section_coverage_image

How big are they?

What is that behavior?

Photogrammetry

The size and morphology of an animal is a key constraint to its habitat use and foraging capabilities, and can reflect its current health and overall fitness. The MaRRS lab uses drone-based photogrammetry to study the size, body condition, and morphology of marine animals, using both manual and automated approaches.

Behavior from a new perspective

Video captured from drones during photogrammetric work provides details on the near surface behavior of marine animals, providing insights into their individual and social behaviors. In some cases, we can use 360 video as an immersive approach to seeing their behaviors from a new perspective. Explore the video at left to experience a flight over whales in Antarctica.

Tools for morphometric analysis

MorphoMetriX

Torres and Bierlich, (2020). MorphoMetriX: a photogrammetric measurement GUI for morphometric analysis of megafauna. Journal of Open Source Software, 5(45), 1825, https://doi.org/10.21105/joss.01825MorphoMetriX

A photogrammetric measurement GUI for morphometric analysis of megafauna
Researchers in the MaRRS lab have created MorphoMetriX, a software program that designed to help people measure whales accurately and efficiently from drone imagery. The software was released via a recently published paper that describes the software and how it is used (see Torres and Bierlich, 2020). MorphoMetriX was originally designed for the purpose of obtaining morphometric measurements of large whales imaged via UAS, but can be applied to other animals (e.g., pinnipeds, alligators, manatees) and used with nadir imagery (i.e., images collected by looking straight down at a target) collected via other platforms.
The WhaleScale

The WhaleScale

Morphometric analysis of cetaceans from aerial drone images – in your browser!
WhaleScale is a project sponsored by the Duke Marine Robotics and Remote Sensing Lab, a subset of the Duke Nicholas School of the Environment. It aspires to connect researchers with accessible tools to humanely and safely measure whales from drone images, right on their own computer using a web browser. WhaleScale uses software inspired by MorphimetriX, an image processing program developed by marine megafauna researchers KC Bierlich and Walter Torres. Like ImageJ and other UAS photogrammetry tools WhaleScale gives you the ability to draw vectors, curves, and points to measure whales.

Please note: The WhaleScale application is currently down. We are aware of the issues with the application, and are working to fix them as soon as possible.