MVibCode: Multi-Channel Vibrotactile Codec Using Hierarchical Perceptual Clustering

Research output: Contribution to journalResearch articleContributedpeer-review

Contributors

  • Lars Nockenberg - , Technical University of Munich, TUD Dresden University of Technology (Author)
  • Andreas Noll - , Technical University of Munich, TUD Dresden University of Technology (Author)
  • Sabrina Paneels - , Université Paris-Saclay (Author)
  • Ayoub Ben Dhiab - , Université Paris-Saclay (Author)
  • Charles Hudin - , Université Paris-Saclay (Author)
  • Eckehard Steinbach - , Technical University of Munich, TUD Dresden University of Technology (Author)

Abstract

To achieve convincing remote vibrotactile experiences, it is necessary to transmit a large number of signal channels corresponding to dense interaction points on the human skin. This leads to a dramatic increase in the amount of data to be transmitted. In order to cope with these data efficiently, vibrotactile codecs have to be used to reduce the data rate demands. Although first vibrotactile codecs have been introduced in the past, they are mostly single-channel codecs and cannot achieve the required data reduction. Therefore, in this paper, a multi-channel vibrotactile codec is presented that extends a wavelet-based codec for single channel signals. By leveraging interchannel redundancies using channel clustering and differential coding, the presented codec is able to achieve a reduction of 69.1% in data rate compared to the state-of-the-art single-channel codec while maintaining a perceptual ST-SIM quality score of 95%.

Details

Original languageEnglish
Pages (from-to)646-651
Number of pages6
JournalIEEE Transactions on Haptics
Volume16
Issue number4
Publication statusPublished - 1 Oct 2023
Peer-reviewedYes

External IDs

PubMed 37192023

Keywords

Keywords

  • Computers and information processing, data compression, haptic interfaces, information systems, source coding professional communication, tactile internet computers and information processing