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We present a method of robustly identifying a text block in complex web images. The method is a MLP (Multi-layer perceptron) classifier trained on LBP (Local binary patterns), wavelet and shape feature spaces. Especially, we propose adaptive masks of LBP which responses flexibly to various character sizes. Most of previous works use fixed mask size or multi level scales by pyramid schemes, which may...
Automatic facial expression recognition is a challenging problem in computer vision, and has gained significant importance in applications of human-computer interaction. This paper presents a new appearance-based feature descriptor, the Local Directional Pattern Variance (LDPv), to represent facial components for human expression recognition. In contrast with LDP, the proposed LDPv introduces the...
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