Automated Quality Assessment for Compressed Vibrotactile Signals Using Multi-Method Assessment Fusion

Andreas Noll, Markus Hofbauer, Evelyn Muschter, Shu Chen Li, Eckehard Steinbach

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

7 Scopus citations

Abstract

Design and optimization of vibrotactile codecs require precise measurements of the compressed signals' perceptual quality. In this paper, we present two computational approaches for estimating vibrotactile signal quality. First, we propose a novel full-reference vibrotactile quality metric called Spectral Perceptual Quality Index (SPQI), which computes a similarity score based on a computed perceptually weighted error measure. Second, we use the concept of Multi-Method Assessment Fusion (MAF) to predict the subjective quality. MAF uses a Support Vector Machine regressor to fuse multiple elementary metrics into a final quality score, which preserves the strengths of the individual metrics. We evaluate both proposed quality assessment methods on an extended subjective dataset, which we introduce as part of this work. For two of three tested vibrotactile codecs, the MSE between subjective ratings and the SPQI is reduced by 64% and 92%, respectively compared to the state of the art. With our MAF approach, we obtain the only currently available metric that accurately predicts real human user experiments for all three tested codecs. The MAF estimations reduce the average MSE to the subjective ratings over all three tested codecs by 59% compared to the best performing elementary metric.

Original languageEnglish
Title of host publication2022 IEEE Haptics Symposium, HAPTICS 2022
PublisherIEEE Computer Society
ISBN (Electronic)9781665420297
DOIs
StatePublished - 2022
Externally publishedYes
Event27th IEEE Haptics Symposium, HAPTICS 2022 - Virtual, Online, United States
Duration: 21 Mar 202224 Mar 2022

Publication series

NameIEEE Haptics Symposium, HAPTICS
Volume2022-March
ISSN (Print)2324-7347
ISSN (Electronic)2324-7355

Conference

Conference27th IEEE Haptics Symposium, HAPTICS 2022
Country/TerritoryUnited States
CityVirtual, Online
Period21/03/2224/03/22

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