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Author
Bogdan Raducanu; Fadi Dornaika
Title
A Supervised Non-linear Dimensionality Reduction Approach for Manifold Learning
Type
Journal Article
Year
2012
Publication
Pattern Recognition
Abbreviated Journal
PR
Volume
45
Issue
6
Pages
2432-2444
Keywords
Abstract
IF= 2.61
IF=2.61 (2010)
In this paper we introduce a novel supervised manifold learning technique called Supervised Laplacian Eigenmaps (S-LE), which makes use of class label information to guide the procedure of non-linear dimensionality reduction by adopting the large margin concept. The graph Laplacian is split into two components: within-class graph and between-class graph to better characterize the discriminant property of the data. Our approach has two important characteristics: (i) it adaptively estimates the local neighborhood surrounding each sample based on data density and similarity and (ii) the objective function simultaneously maximizes the local margin between heterogeneous samples and pushes the homogeneous samples closer to each other.
Our approach has been tested on several challenging face databases and it has been conveniently compared with other linear and non-linear techniques, demonstrating its superiority. Although we have concentrated in this paper on the face recognition problem, the proposed approach could also be applied to other category of objects characterized by large variations in their appearance (such as hand or body pose, for instance.
Address
Corporate Author
Thesis
Publisher
Elsevier
Place of Publication
Editor
Language
Summary Language
Original Title
Series Editor
Series Title
Abbreviated Series Title
Series Volume
Series Issue
Edition
ISSN
0031-3203
ISBN
Medium
Area
Expedition
Conference
Notes
OR; MV
Approved
no
Call Number
Admin @ si @ RaD2012a
Serial
1884
Permanent link to this record
Author
Bogdan Raducanu; Fadi Dornaika
Title
Texture-independent recognition of facial expressions in image snapshots and videos
Type
Journal Article
Year
2013
Publication
Machine Vision and Applications
Abbreviated Journal
MVA
Volume
24
Issue
4
Pages
811-820
Keywords
Abstract
This paper addresses the static and dynamic recognition of basic facial expressions. It has two main contributions. First, we introduce a view- and texture-independent scheme that exploits facial action parameters estimated by an appearance-based 3D face tracker. We represent the learned facial actions associated with different facial expressions by time series. Second, we compare this dynamic scheme with a static one based on analyzing individual snapshots and show that the former performs better than the latter. We provide evaluations of performance using three subspace learning techniques: linear discriminant analysis, non-parametric discriminant analysis and support vector machines.
Address
Corporate Author
Thesis
Publisher
Springer-Verlag
Place of Publication
Editor
Language
Summary Language
Original Title
Series Editor
Series Title
Abbreviated Series Title
Series Volume
Series Issue
Edition
ISSN
0932-8092
ISBN
Medium
Area
Expedition
Conference
Notes
OR; 600.046; 605.203;MV
Approved
no
Call Number
Admin @ si @ RaD2013
Serial
2230
Permanent link to this record
Author
Bogdan Raducanu; Jordi Vitria
Title
Learning to Learn: From Smarts Machines to Intelligent Machines
Type
Journal
Year
2008
Publication
Patter Recognition Letters
Abbreviated Journal
PRL
Volume
29
Issue
8
Pages
1024–1032
Keywords
Abstract
Address
Corporate Author
Thesis
Publisher
Place of Publication
Editor
Language
Summary Language
Original Title
Series Editor
Series Title
Abbreviated Series Title
Series Volume
Series Issue
Edition
ISSN
ISBN
Medium
Area
Expedition
Conference
Notes
OR;MV
Approved
no
Call Number
BCNPCL @ bcnpcl @ RaV2008a
Serial
950
Permanent link to this record
Author
Bogdan Raducanu; Jordi Vitria
Title
Online Nonparametric Discriminant Analysis for Incremental Subspace Learning and Recognition
Type
Journal
Year
2008
Publication
Pattern Analysis and Applications. Special Issue: Non–Parametric Distance–Based Classification Techniques and Their Applications
Abbreviated Journal
Volume
11
Issue
3-4
Pages
259–268
Keywords
Abstract
Address
Corporate Author
Thesis
Publisher
Springer
Place of Publication
Editor
Language
Summary Language
Original Title
Series Editor
Series Title
Abbreviated Series Title
Series Volume
Series Issue
Edition
ISSN
ISBN
Medium
Area
Expedition
Conference
Notes
OR;MV
Approved
no
Call Number
BCNPCL @ bcnpcl @ RaV2008c
Serial
997
Permanent link to this record
Author
Bogdan Raducanu; Jordi Vitria
Title
Face Recognition by Artificial Vision Systems: A Cognitive Perspective
Type
Journal
Year
2008
Publication
International Journal of Pattern Recognition and Artificial Intelligence
Abbreviated Journal
IJPRAI
Volume
22
Issue
5
Pages
899–913
Keywords
Abstract
Address
Corporate Author
Thesis
Publisher
Place of Publication
Editor
Language
Summary Language
Original Title
Series Editor
Series Title
Abbreviated Series Title
Series Volume
Series Issue
Edition
ISSN
ISBN
Medium
Area
Expedition
Conference
Notes
OR;MV
Approved
no
Call Number
BCNPCL @ bcnpcl @ RaV2008b
Serial
1007
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