Affordance Perception by a Knowledge-Guided Vision-Language Model with Efficient Error Correction

• URL: http://arxiv.org/abs/2407.13368v1
• Date: Thu, 18 Jul 2024 10:24:22 GMT
• Title: Affordance Perception by a Knowledge-Guided Vision-Language Model with Efficient Error Correction
• Authors: Gertjan Burghouts, Marianne Schaaphok, Michael van Bekkum, Wouter Meijer, Fieke Hillerström, Jelle van Mil,
• Abstract summary: We provide an affordance representation with precise, actionable affordances for a robot in an open-world setting. We connect this knowledge base to a foundational vision-language models (VLM) and prompt the VLM for a wider variety of new and unseen objects. The mix of affordance representation, image detection and a human-in-the-loop is effective for a robot to search for objects to achieve its goals.
• Score: 0.0
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Mobile robot platforms will increasingly be tasked with activities that involve grasping and manipulating objects in open world environments. Affordance understanding provides a robot with means to realise its goals and execute its tasks, e.g. to achieve autonomous navigation in unknown buildings where it has to find doors and ways to open these. In order to get actionable suggestions, robots need to be able to distinguish subtle differences between objects, as they may result in different action sequences: doorknobs require grasp and twist, while handlebars require grasp and push. In this paper, we improve affordance perception for a robot in an open-world setting. Our contribution is threefold: (1) We provide an affordance representation with precise, actionable affordances; (2) We connect this knowledge base to a foundational vision-language models (VLM) and prompt the VLM for a wider variety of new and unseen objects; (3) We apply a human-in-the-loop for corrections on the output of the VLM. The mix of affordance representation, image detection and a human-in-the-loop is effective for a robot to search for objects to achieve its goals. We have demonstrated this in a scenario of finding various doors and the many different ways to open them.

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