Advances in Multimedia Information Processing - PCM 2009: by Sun-Yuan Kung (auth.), Paisarn Muneesawang, Feng Wu, Itsuo PDF

By Sun-Yuan Kung (auth.), Paisarn Muneesawang, Feng Wu, Itsuo Kumazawa, Athikom Roeksabutr, Mark Liao, Xiaoou Tang (eds.)

ISBN-10: 3642104665

ISBN-13: 9783642104664

ISBN-10: 3642104673

ISBN-13: 9783642104671

This e-book constitutes the complaints of the tenth Pacific Rim convention on Multimedia, held in Bangkok, Thailand in the course of December 15-18, 2009.

The papers offered within the quantity have been conscientiously reviewed and chosen from 171 submissions. the themes lined are exploring large-scale videos:automatic content material style category, fix, enhancement and authentication, human habit category and popularity, photograph and video coding perceptual caliber development, picture annotation, retrieval, and category, item detection and monitoring, networking applied sciences, audio processing, 3DTV and mulit-view video, photo watermarking, multimedia rfile seek and retrieval, clever multimedia defense and forensics, multimedia content material administration, photo research and matching, coding, complex snapshot processing innovations, multimedia compressioin and optimization, multimedia defense rights and management.

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Additional info for Advances in Multimedia Information Processing - PCM 2009: 10th Pacific Rim Conference on Multimedia, Bangkok, Thailand, December 15-18, 2009 Proceedings

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The is primarily responsible for the partition. 91 is (relatively) large. e. 9. 917 to have a chance to result in a misclassification. e. ρ = 0. – Hard Case: A Vulnerable Classifier for Partition (x1 , x3 )(x2 , x4 ). As depicted in Figure 7(b), the two classes are not linear separable in the original space but become (theoretically) separable in the spectral space. The for the partition (x1 , x3 )(x2 , x4 ). 43 is relatively small. e. 215. 215 could already tip the classification result. It is therefore necessary to incorporate a nonzero regularization parameter (ρ = 0) in the PDA classifier a = [K + ρI]−1 [y − be].

In fact, the suppression factor adopted by PDA, cf. Eq. 73, basically follows the very same principle adopted by Wiener filtering [6]. A PDA solution in empirical space K may be viewed as a compromise between the hard-truncation and the soft-weighting by the spectral PDA classifier. In this case, uncorrelated perturbations are now added to the empirical vectors in K, instead of E. The suppression factor of the empirical PDA becomes λ2i +ρ λ2i Note that a minor component now gets even more suppressed - by one extra order of magnitude - making it closer to the bona fide truncation.

The best decision hyperplane must be orthogonal to the data-hyperplane: w3 = 0. Note that x3 contributes no useful information towards differentiation of the two classes. Assume that the positive class contains the first two vectors, x1 and x2 , while the negative class has only x3 . In this case, ⎡ ⎤ ⎡ ⎤ ⎡ ⎤ 641 +1 1 K = XT X = ⎣ 4 3 1 ⎦, y = ⎣ +1 ⎦, and e = ⎣ 1 ⎦ . 111 −1 1 It follows that the optimal parameter b is thus yT K−1 e = −1, eT K−1 e a = K−1 [y − be] = [−2 4 − 2 ]T , and w = XK−1 [y − be] = [0 2 0 ]T .

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Advances in Multimedia Information Processing - PCM 2009: 10th Pacific Rim Conference on Multimedia, Bangkok, Thailand, December 15-18, 2009 Proceedings by Sun-Yuan Kung (auth.), Paisarn Muneesawang, Feng Wu, Itsuo Kumazawa, Athikom Roeksabutr, Mark Liao, Xiaoou Tang (eds.)


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