J
Jufu Feng
Researcher at Peking University
Publications - 26
Citations - 1111
Jufu Feng is an academic researcher from Peking University. The author has contributed to research in topics: Facial recognition system & Boosting (machine learning). The author has an hindex of 11, co-authored 25 publications receiving 1002 citations. Previous affiliations of Jufu Feng include Nanjing University.
Papers
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Journal ArticleDOI
On the Euclidean distance of images
Liwei Wang,Yan Zhang,Jufu Feng +2 more
TL;DR: A new Euclidean distance for images, which is robust to small perturbation of images and can be embedded in most image classification techniques such as SVM, LDA, and PCA, is presented.
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The equivalence of two-dimensional PCA to line-based PCA
TL;DR: It is shown that 2DPCA is equivalent to a special case of an existing feature extraction method, block-based PCA, which has been used for face recognition in a number of systems.
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Subspace distance analysis with application to adaptive Bayesian algorithm for face recognition
Liwei Wang,Xiao Wang,Jufu Feng +2 more
TL;DR: The maximum a posteriori (MAP) adaptation is introduced to the problem of SIS estimation, and it is demonstrated that SIS varies significantly from person to person, and most SISs are not similar to AIS.
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On image matrix based feature extraction algorithms
Liwei Wang,Xiao Wang,Jufu Feng +2 more
TL;DR: It is shown that these matrices based 2-D algorithms are equivalent to special cases of image block based feature extraction, i.e., partition each image into several blocks and perform standard PCA or LDA on the aggregate of all image blocks.
Journal Article
A Refined Margin Analysis for Boosting Algorithms via Equilibrium Margin
TL;DR: A refined analysis of the margin theory is made, which proves a bound in terms of a new margin measure called the Equilibrium margin (Emargin) which is uniformly sharper than Breiman's minimum margin bound.