Discriminative functional analysis of human movements

Ali Akbar Samadani, Ali Ghodsi, Dana Kulić

Research output: Contribution to journalArticleResearchpeer-review

17 Citations (Scopus)

Abstract

This paper investigates the use of statistical dimensionality reduction (DR) techniques for discriminative low dimensional embedding to enable affective movement recognition. Human movements are defined by a collection of sequential observations (time-series features) representing body joint angle or joint Cartesian trajectories. In this work, these sequential observations are modelled as temporal functions using B-spline basis function expansion, and dimensionality reduction techniques are adapted to enable application to the functional observations. The DR techniques adapted here are: Fischer discriminant analysis (FDA), supervised principal component analysis (PCA), and Isomap. These functional DR techniques along with functional PCA are applied on affective human movement datasets and their performance is evaluated using leave-one-out cross validation with a one-nearest neighbour classifier in the corresponding low-dimensional subspaces. The results show that functional supervised PCA outperforms the other DR techniques examined in terms of classification accuracy and time resource requirements.

Original languageEnglish
Pages (from-to)1829-1839
Number of pages11
JournalPattern Recognition Letters
Volume34
Issue number15
DOIs
Publication statusPublished - 1 Jan 2013
Externally publishedYes

Keywords

  • Affective movement analysis
  • Dimensionality reduction for human
  • Human behaviour analysis
  • Human movement time-series analysis
  • Movement analysis

Cite this