Which Taxels, Not How Many: Tactile Sensor Placement for Dexterous Policies
Which Taxels, Not How Many: Tactile Sensor Placement for Dexterous Policies
This research investigates optimal tactile sensor placement for dexterous manipulation policies.
The study evaluates the necessity of uniform tactile sensor placement by comparing a small set of taxels selected from contact statistics against a larger uniform set across three robot hands, finding that sensors at rarely contacted sites provide no benefit and that layout in the input tensor does not affect performance.
Source: arXiv Robotics — research abstracts · Read original article ↗
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Publisher-reported claims, with original evidence. These results have not been independently verified by RoboSignal.
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3 robots
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e test this default under a single controlled protocol. The protocol holds the teacher, the training procedure, and the candidate taxels fixed and varies only the sensor configuration and the representation. We evaluate it on in-palm rotation and grasping with three robot hands. A small set of taxels selected from contact statistics matches a far larger uniform set. Taxels at rarely contacted sites are equivalent to
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e test this default under a single controlled protocol. The protocol holds the teacher, the training procedure, and the candidate taxels fixed and varies only the sensor configuration and the representation. We evaluate it on in-palm rotation and grasping with three robot hands. A small set of taxels selected from contact statistics matches a far larger uniform set. Taxels at rarely contacted sites are equivalent to
Open source S3
no tactile input. With all candidate taxels, their layout in the input tensor does not affect performance, even for a convolutional encoder. Uniform placement therefore overestimates the number of taxels a task requires. We distill these results into lessons for designing tactile policies and into a minimal set of design choices that a tactile policy study should report.
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arXiv:2611.10647v1 Announce Type: new Abstract: Policies for dexterous manipulation depend on design choices made before training: which sensors enter the observation, where they are placed, and how their readings are arranged for the encoder. These choices are rarely examined. For tactile sensing, simulation studies place taxels uniformly over the hand, and this placement has become a default without being tested. W
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Which Taxels, Not How Many: Tactile Sensor Placement for Dexterous Policies
Open source S1
Source：arXiv Robotics — research abstracts · arxiv.org