WenJie Zhao

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In face recognition (FR) literature subspace LDA has been proposed as a superior alternative over pure PCA and LDA. However the current system has several drawbacks common to many existing face recognition systems. Among them are performance degradations due to scale-change, illumination change etc, on the input images. In this paper, we rst study the(More)
—In this paper, the variable structure control problem for a class of uncertain stochastic systems with time-varying delay is investigated. A new concept of the subordinated reachable property of the sliding motion is introduced. The variable structure control law is then proposed to ensure that the sliding motion is subordinated reachable. And a sufficient(More)
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