Are Euler angles a useful rotation parameterisation for pose estimation with Normalizing Flows?
Abstract
Object pose estimation is a task that is of central importance in 3D Computer Vision. Given a target image and a canonical pose, a single point estimate may very often be sufficient; however, a probabilistic pose output is related to a number of benefits when pose is not unambiguous due to sensor and projection constraints or inherent object symmetries. With this paper, we explore the usefulness of using the well-known Euler angles parameterisation as a basis for a Normalizing Flows model for pose estimation. Isomorphic to spatial rotation, 3D pose has been parameterized in a number of ways, either in or out of the context of parameter estimation. We explore the idea that Euler angles, despite their shortcomings, may lead to useful models in a number of aspects, compared to a model built on a more complex parameterisation.
Keywords
Cite
@article{arxiv.2511.02277,
title = {Are Euler angles a useful rotation parameterisation for pose estimation with Normalizing Flows?},
author = {Giorgos Sfikas and Konstantina Nikolaidou and Foteini Papadopoulou and George Retsinas and Anastasios L. Kesidis},
journal= {arXiv preprint arXiv:2511.02277},
year = {2025}
}
Comments
BMVC 2025 workshop proceedings (Smart Cameras for Smarter Autonomous Vehicles & Robots)