Sciweavers

PAMI
2008
221views more  PAMI 2008»
13 years 4 months ago
Plane-Based Optimization for 3D Object Reconstruction from Single Line Drawings
In previous optimization-based methods of 3D planar-faced object reconstruction from single 2D line drawings, the missing depths of the vertices of a line drawing (and other parame...
Jianzhuang Liu, Liangliang Cao, Zhenguo Li, Xiaoou...
ACII
2005
Springer
13 years 6 months ago
A Novel Regularized Fisher Discriminant Method for Face Recognition Based on Subspace and Rank Lifting Scheme
The null space N(St) of total scatter matrix St contains no useful information for pattern classification. So, discarding the null space N(St) results in dimensionality reduction ...
Wen-Sheng Chen, Pong Chi Yuen, Jian Huang, Jian-Hu...
FGR
2004
IEEE
159views Biometrics» more  FGR 2004»
13 years 8 months ago
Null Space-based Kernel Fisher Discriminant Analysis for Face Recognition
The null space-based LDA takes full advantage of the null space while the other methods remove the null space. It proves to be optimal in performance. From the theoretical analysi...
Wei Liu, Yunhong Wang, Stan Z. Li, Tieniu Tan
ECCV
2004
Springer
13 years 10 months ago
Null Space Approach of Fisher Discriminant Analysis for Face Recognition
The null space of the within-class scatter matrix is found to express most discriminative information for the small sample size problem (SSSP). The null space-based LDA takes full ...
Wei Liu, Yunhong Wang, Stan Z. Li, Tieniu Tan
PAKDD
2007
ACM
152views Data Mining» more  PAKDD 2007»
13 years 10 months ago
Spectral Clustering Based Null Space Linear Discriminant Analysis (SNLDA)
While null space based linear discriminant analysis (NLDA) obtains a good discriminant performance, the ability easily suffers from an implicit assumption of Gaussian model with sa...
Wenxin Yang, Junping Zhang
ICC
2007
IEEE
118views Communications» more  ICC 2007»
13 years 11 months ago
Subspace-based OFDM Carrier Frequency Offset Estimation in the Presence of DC Offset
Abstract—In an OFDM receiver with direct-conversion architecture, DC offset (DCO) and carrier frequency offset (CFO) cause a severe performance degradation. Recently, by investig...
Hai Lin, Takeshi Nakao, Weiming Lu, Katsumi Yamash...
ICASSP
2008
IEEE
13 years 11 months ago
Null-Space representation for view-invariant motion trajectory classification-recognition and indexing-retrieval
This paper presents a novel classification/ retrieval system for motion events based on a perfect view invariant representation of motion trajectories and a linear classifier al...
Eser Ustunel, Xu Chen, Dan Schonfeld, Ashfaq A. Kh...
ICASSP
2009
IEEE
13 years 11 months ago
View-invariant tensor null-space representation for multiple motion trajectory retrieval and classification
In this paper, we propose a novel general framework for tensor based null space affine invariants, namely, tensor null space invariants (TNSI) with a linear classifier for high ...
Xu Chen, Dan Schonfeld, Ashfaq Khokhar
ICIP
2009
IEEE
14 years 5 months ago
Localized Null Space Representation For Dynamic Updating And Downdating In Image And Video Databases
Event/object classification and recognition is an extremely challenging problem, particularly when the query or stored data undergo an affine transformation due to camera motion. ...