Optimal linear representations of images for object recognition

被引:68
作者
Liu, XW [1 ]
Srivastava, A
Gallivan, K
机构
[1] Florida State Univ, Dept Comp Sci, Tallahassee, FL 32306 USA
[2] Florida State Univ, Dept Stat, Tallahassee, FL 32306 USA
[3] Florida State Univ, Sch Comp Sci & Informat Technol, Tallahassee, FL 32306 USA
基金
美国国家科学基金会;
关键词
optimal subspaces; Grassmann manifold; object recognition; linear representations; dimension reduction; optimal component analysis;
D O I
10.1109/TPAMI.2004.1273986
中图分类号
TP18 [人工智能理论];
学科分类号
081104 ; 0812 ; 0835 ; 1405 ;
摘要
Although linear representations are frequently used in image analysis, their performances are seldom optimal in specific applications. This paper proposes a stochastic gradient algorithm for finding optimal linear representations of images for use in appearance-based object recognition. Using the nearest neighbor classifier, a recognition performance function is specified and linear representations that maximize this performance are sought. For solving this optimization problem on a Grassmann manifold, a stochastic gradient algorithm utilizing intrinsic flows is introduced. Several experimental results are presented to demonstrate this algorithm.
引用
收藏
页码:662 / 666
页数:5
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