Bio-Inspired Proprioceptive Touch of a Soft Finger with Inner-Finger Kinesthetic Perception

In-hand object pose estimation is challenging for humans and robots due to occlusion caused by the hand and object. This paper proposes a soft finger that integrates inner vision with kinesthetic sensing to estimate object pose inspired by human fingers. The soft finger has a flexible skeleton and s...

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Main Authors: Xiaobo Liu, Xudong Han, Ning Guo, Fang Wan, Chaoyang Song
Format: Article
Language:English
Published: MDPI AG 2023-10-01
Series:Biomimetics
Subjects:
Online Access:https://www.mdpi.com/2313-7673/8/6/501
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author Xiaobo Liu
Xudong Han
Ning Guo
Fang Wan
Chaoyang Song
author_facet Xiaobo Liu
Xudong Han
Ning Guo
Fang Wan
Chaoyang Song
author_sort Xiaobo Liu
collection DOAJ
description In-hand object pose estimation is challenging for humans and robots due to occlusion caused by the hand and object. This paper proposes a soft finger that integrates inner vision with kinesthetic sensing to estimate object pose inspired by human fingers. The soft finger has a flexible skeleton and skin that adapts to different objects, and the skeleton deformations during interaction provide contact information obtained by the image from the inner camera. The proposed framework is an end-to-end method that uses raw images from soft fingers to estimate in-hand object pose. It consists of an encoder for kinesthetic information processing and an object pose and category estimator. The framework was tested on seven objects, achieving an impressive error of 2.02 mm and 11.34 degrees for pose error and 99.05% for classification.
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spelling doaj.art-75ba744a0ea7416aab27bb3c4504b7652023-11-19T15:49:02ZengMDPI AGBiomimetics2313-76732023-10-018650110.3390/biomimetics8060501Bio-Inspired Proprioceptive Touch of a Soft Finger with Inner-Finger Kinesthetic PerceptionXiaobo Liu0Xudong Han1Ning Guo2Fang Wan3Chaoyang Song4Shenzhen Key Laboratory of Intelligent Robotics and Flexible Manufacturing Systems, Southern University of Science and Technology, Shenzhen 518055, ChinaShenzhen Key Laboratory of Intelligent Robotics and Flexible Manufacturing Systems, Southern University of Science and Technology, Shenzhen 518055, ChinaShenzhen Key Laboratory of Intelligent Robotics and Flexible Manufacturing Systems, Southern University of Science and Technology, Shenzhen 518055, ChinaShenzhen Key Laboratory of Intelligent Robotics and Flexible Manufacturing Systems, Southern University of Science and Technology, Shenzhen 518055, ChinaDepartment of Mechanical and Energy Engineering, Southern University of Science and Technology, Shenzhen 518055, ChinaIn-hand object pose estimation is challenging for humans and robots due to occlusion caused by the hand and object. This paper proposes a soft finger that integrates inner vision with kinesthetic sensing to estimate object pose inspired by human fingers. The soft finger has a flexible skeleton and skin that adapts to different objects, and the skeleton deformations during interaction provide contact information obtained by the image from the inner camera. The proposed framework is an end-to-end method that uses raw images from soft fingers to estimate in-hand object pose. It consists of an encoder for kinesthetic information processing and an object pose and category estimator. The framework was tested on seven objects, achieving an impressive error of 2.02 mm and 11.34 degrees for pose error and 99.05% for classification.https://www.mdpi.com/2313-7673/8/6/501object recognitionkinesthetichumanoid fingerinner-finger visiondeep learning
spellingShingle Xiaobo Liu
Xudong Han
Ning Guo
Fang Wan
Chaoyang Song
Bio-Inspired Proprioceptive Touch of a Soft Finger with Inner-Finger Kinesthetic Perception
Biomimetics
object recognition
kinesthetic
humanoid finger
inner-finger vision
deep learning
title Bio-Inspired Proprioceptive Touch of a Soft Finger with Inner-Finger Kinesthetic Perception
title_full Bio-Inspired Proprioceptive Touch of a Soft Finger with Inner-Finger Kinesthetic Perception
title_fullStr Bio-Inspired Proprioceptive Touch of a Soft Finger with Inner-Finger Kinesthetic Perception
title_full_unstemmed Bio-Inspired Proprioceptive Touch of a Soft Finger with Inner-Finger Kinesthetic Perception
title_short Bio-Inspired Proprioceptive Touch of a Soft Finger with Inner-Finger Kinesthetic Perception
title_sort bio inspired proprioceptive touch of a soft finger with inner finger kinesthetic perception
topic object recognition
kinesthetic
humanoid finger
inner-finger vision
deep learning
url https://www.mdpi.com/2313-7673/8/6/501
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AT ningguo bioinspiredproprioceptivetouchofasoftfingerwithinnerfingerkinestheticperception
AT fangwan bioinspiredproprioceptivetouchofasoftfingerwithinnerfingerkinestheticperception
AT chaoyangsong bioinspiredproprioceptivetouchofasoftfingerwithinnerfingerkinestheticperception