Multi run ICA and surface EMG based signal processing system for recognising hand gestures

Ganesh R. Naik, Dinesh K. Kumar, Marimuthu Palaniswami

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

26 Citations (Scopus)

Abstract

Hand gesture identification is a complex problem, where more number of muscles will be involved even for a simple hand movement. Surface electromyography (sEMG) is an indicator of muscle activity and related to body movement and posture. In the recent past sEMG had been used with various statistical signal processing technique to identify different hand gestures, but since the hand actions require simultaneous muscle contractions reliability issues exist. Recently Blind source separation (BSS) techniques like Independent Component Analysis (ICA) had been used to tackle this problem. In this paper, a novel method is proposed to enhance the performance of ICA of sEMG by decomposing the signal into components originating from different muscles. First, we use FastICA algorithm to generate random mixing matrix, and the best mixing matrix is chosen based on the highest Signal to interference ratio(SIR) of mixing matrix. Pattern classification of the separated signal is performed in the second step with a back propagation neural network. The proposed model-based approach is able to overcome the ambiguity problems (order and magnitude problem) of BSS methods by selecting an apriori mixing matrix based on known hand muscle anatomy. Testing was conducted using several single shot experiments conducted with seven subjects. The results indicate that the system is able to classify six different hand gestures with 99% accuracy.

Original languageEnglish
Title of host publication2008 8th IEEE International Conference on Computer and Information Technology (CIT)
Place of PublicationSydney, NSW
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages700-705
Number of pages6
ISBN (Print)9781424423583
DOIs
Publication statusPublished - 2008
Externally publishedYes
Event2008 IEEE 8th International Conference on Computer and Information Technology, CIT 2008 - Sydney, NSW, Australia
Duration: 8 Jul 200811 Jul 2008

Publication series

NameProceedings - 2008 IEEE 8th International Conference on Computer and Information Technology, CIT 2008

Conference

Conference2008 IEEE 8th International Conference on Computer and Information Technology, CIT 2008
Country/TerritoryAustralia
CitySydney, NSW
Period8/07/0811/07/08

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