Implementation of HMM-Based Human Activity Recognition Using Single Triaxial Accelerometer

Chang Woo HAN  Shin Jae KANG  Nam Soo KIM  

IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences   Vol.E93-A   No.7   pp.1379-1383
Publication Date: 2010/07/01
Online ISSN: 1745-1337
DOI: 10.1587/transfun.E93.A.1379
Print ISSN: 0916-8508
Type of Manuscript: LETTER
Category: Digital Signal Processing
human activity recognition,  triaxial accelerometer,  HMM,  state transition model,  

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In this letter, we propose a novel approach to human activity recognition. We present a class of features that are robust to the tilt of the attached sensor module and a state transition model suitable for HMM-based activity recognition. In addition, postprocessing techniques are applied to stabilize the recognition results. The proposed approach shows significant improvements in recognition experiments over a variety of human activity DB.