Title
Gait-based human age estimation using age group-dependent manifold learning and regression.
Abstract
Human age estimation from gait is expected to be an important technology for a variety of applications such as automatic customer counting for marketing research or automatic age-based access control restriction for a specific area because the gait can be observable at a distance from a camera (e.g., CCTV). Although the aging process of gait significantly differs among age groups (e.g., children, adults, and the elderly), previous studies on gait-based human age estimation employ a single age group-independent estimation model that suffers from large estimation errors when the age variation increases. We therefore propose an age group-dependent gait-based human age estimation method for better accuracy. Specifically, in the training phase, we first compose age groups that are well-separated from each other by clustering gait features along with their age labels. We then learn a classifier that classifies the gait features for multiple age groups using a directed acyclic graph support vector machine. Next, we learn an age regression model for each age group using support vector regression with a Gaussian kernel in conjunction with a manifold learning technique, i.e., orthogonal locality preserving projection, to better characterize the gait feature. In the test phase, given a gait feature, it is first classified into an age group and then its age is estimated with the age regression model of the classified age group. Experimental results on a gait database that has the world’s largest population of participants ranging from 2 to 90 years old demonstrate the state-of-the-art performance of the proposed method.
Year
DOI
Venue
2018
10.1007/s11042-018-6049-7
Multimedia Tools Appl.
Keywords
Field
DocType
Human age estimation, Age group classification, Support vector regression, Manifold learning
Population,Age groups,Gait,Regression,Pattern recognition,Computer science,Support vector machine,Artificial intelligence,Cluster analysis,Classifier (linguistics),Nonlinear dimensionality reduction
Journal
Volume
Issue
ISSN
77
21
1380-7501
Citations 
PageRank 
References 
1
0.35
23
Authors
5
Name
Order
Citations
PageRank
Xiang Li18140.11
Yasushi Makihara2101270.67
C. Xu38013.87
Yasushi Yagi41752186.22
Mingwu Ren516817.44