Paper Info
Title
A bag of words approach to subject specific 3D human pose interaction classification with random decision forests.
Abstract
In this work, we investigate whether it is possible to distinguish conversational interactions from observing human motion alone, in particular gestures in 3D. We adopt Kinect sensors to obtain 3D displacement and velocity measurements, followed by wavelet decomposition to extract low level temporal features. These features are then generalized to form a visual vocabulary that can be further generalized to a set of topics from temporal distributions of visual vocabulary. A supervised learning approach based on Random Forests is used to classify the testing sequences to seven different conversational scenarios. These conversational scenarios concerned in this work have rather subtle differences among them. Unlike typical action or event recognition, each interaction in our case contain many instances of primitive motions and actions, many of which are shared among different conversation scenarios. That is the interactions we are concerned with are not micro or instant events, such as hugging and high-five, but rather interactions over a period of time that consists rather similar individual motions, micro actions and interactions. We believe this is among one of the first work that is devoted to conversational interaction classification using 3D pose features and to show this task is indeed possible.
Year
DOI
Venue
2014
10.1016/j.gmod.2013.10.006
Graphical Models
Keywords
Field
DocType
Human interaction,Action recognition,Human pose,Random forests,Bag of words
Bag-of-words model,Computer vision,Conversation,Computer science,Gesture,Human motion,Supervised learning,Artificial intelligence,Random forest,Vocabulary,Event recognition
Journal
Volume
Issue
ISSN
76
3
1524-0703
Citations 
PageRank 
References 
7
0.49
22
Authors
3
Name
Order
Citations
PageRank
Jingjing Deng1165.83
Xianghua Xie238337.13
Ben Daubney3785.71