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Abstract:
While three-dimensional tactile sensor arrays featuring traditional 3D measurement structures have been extensively studied, their limited spatial resolution hinders their ability to perceive small objects during dexterous manipulation. Moreover, existing researches on tactile super-resolution still suffer from lack of contour perception, mapping accuracy and difficult access to super-resolution datasets. Therefore, a prominent two-stage super-resolution algorithm with digital-twin-driven enhancement is proposed for sensor arrays with classical 3D measurement structures. Firstly, based on the intrinsic features of classical 3D measurement structures, digital-twin-driven observation of low/high resolution tactile sensor arrays is introduced for reliable and accurate tactile super-resolution datasets. Secondly, a novel deconstructive interpolative up-sampling is then proposed for digital-twin-driven enhancement and super-resolution multiplier augmentation. Furtherly, a interpolation-convolution two-stage super-resolution network is designed, where the deconstructive interpolative up-sampling is proposed as the first-stage network to effectively and accurately increase the scale of tactile information, and a convolutional neural network with channel features learning is further constructed as the second-stage for high-quality quadruple super-resolution. Comprehensive experiments demonstrate the reliability of the digital-twin-dataset and the effectiveness of our approach, with the digital-twin-trained network achieving quadruple super-resolution (PSNR:31.12, SSIM:0.965) for the self-made sensor, enabling clear recognition of complex Braille letters and higher positioning resolution (0.625mm) for small objects (connector of RF antennas e.g.). Our super-resolution tactile sensing framework realizes the assembly of RF antennas and holds promise for enhancing the dexterity of robotic manipulation. IEEE
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IEEE Transactions on Instrumentation and Measurement
ISSN: 0018-9456
Year: 2024
Volume: 73
Page: 1-1
5 . 6 0 0
JCR@2022
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ESI Highly Cited Papers on the List: 0 Unfold All
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30 Days PV: 9
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