IEEE Trans Pattern Anal Mach Intell - Learning Discriminant Face Descriptor.

Tópicos

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Resumo

Local feature descriptor is an important module for face recognition and those like Gabor and local binary patterns (LBP) have proven effective face descriptors. Traditionally, the form of such local descriptors is pre-defined in a handcrafted way. In this paper, we propose a method to learn a discriminant face descriptor (DFD) in a data-driven way. The idea is to learn the most discriminant local features that minimize the difference of the features between images of the same person and maximize that between images from different persons. In particular, we propose to enhance the discriminative ability of face representation in three aspects. First, the discriminant image filters are learned. Second, the optimal neighborhood sampling strategy is soft determined. Third, the dominant patterns are statistically constructed. We further apply the proposed method to the heterogeneous (cross-modality) face recognition problem and learn DFD in a coupled way (coupled DFD or C-DFD) to reduce the gap between features of heterogeneous face images to improve the performance of this challenging problem. Extensive experiments on FERET, CAS-PEAL-R1, LFW and HFB face databases validate the effectiveness of the proposed DFD learning on both homogeneous and heterogeneous face recognition problems.

Resumo Limpo

local featur descriptor import modul face recognit like gabor local binari pattern lbp proven effect face descriptor tradit form local descriptor predefin handcraft way paper propos method learn discrimin face descriptor dfd datadriven way idea learn discrimin local featur minim differ featur imag person maxim imag differ person particular propos enhanc discrimin abil face represent three aspect first discrimin imag filter learn second optim neighborhood sampl strategi soft determin third domin pattern statist construct appli propos method heterogen crossmod face recognit problem learn dfd coupl way coupl dfd cdfd reduc gap featur heterogen face imag improv perform challeng problem extens experi feret caspealr lfw hfb face databas valid effect propos dfd learn homogen heterogen face recognit problem

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