Training-Free Robot Pose Estimation using Off-the-Shelf Foundational Models

Fuente: arXiv
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Autor principal: Liang, Laurence
Formato: Preprint
Publicado: 2025
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author Liang, Laurence
author_facet Liang, Laurence
contents Pose estimation of a robot arm from visual inputs is a challenging task. However, with the increasing adoption of robot arms for both industrial and residential use cases, reliable joint angle estimation can offer improved safety and performance guarantees, and also be used as a verifier to further train robot policies. This paper introduces using frontier vision-language models (VLMs) as an ``off-the-shelf" tool to estimate a robot arm's joint angles from a single target image. By evaluating frontier VLMs on both synthetic and real-world image-data pairs, this paper establishes a performance baseline attained by current FLMs. In addition, this paper presents empirical results suggesting that test time scaling or parameter scaling alone does not lead to improved joint angle predictions.
format Preprint
id arxiv_https___arxiv_org_abs_2512_06017
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle Training-Free Robot Pose Estimation using Off-the-Shelf Foundational Models
Liang, Laurence
Robotics
Image and Video Processing
Pose estimation of a robot arm from visual inputs is a challenging task. However, with the increasing adoption of robot arms for both industrial and residential use cases, reliable joint angle estimation can offer improved safety and performance guarantees, and also be used as a verifier to further train robot policies. This paper introduces using frontier vision-language models (VLMs) as an ``off-the-shelf" tool to estimate a robot arm's joint angles from a single target image. By evaluating frontier VLMs on both synthetic and real-world image-data pairs, this paper establishes a performance baseline attained by current FLMs. In addition, this paper presents empirical results suggesting that test time scaling or parameter scaling alone does not lead to improved joint angle predictions.
title Training-Free Robot Pose Estimation using Off-the-Shelf Foundational Models
topic Robotics
Image and Video Processing
url https://arxiv.org/abs/2512.06017