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With the advance of 3-dimensional sensing devices, the in-air handwriting, as a more natural way for human and computer interaction, is being developed by the UCAS-CVMT Lab. Compared with the conventional handwritten Chinese characters generated by touching, it is more challenging to accurately recognize them due to unconstrained one-stroke writing style. This paper presents two recognizers to address...
Often in real-world applications such as web page categorization, automatic image annotations and protein function prediction, each instance is associated with multiple labels (categories) simultaneously. In addition, due to the labeling cost one usually deals with a large amount of unlabeled data while the fraction of labeled data points will typically be small. In this paper, we propose a multi-label...
In this paper we introduce a novel framework for 3D object retrieval that relies on tree-based shape representations (TreeSha) derived from the analysis of the scale-space of the Auto Diffusion Function (ADF) and on specialized graph kernels designed for their comparison. By coupling maxima of the Auto Diffusion Function with the related basins of attraction, we can link the information at different...
A new sparse graph-embedded dimensionality reduction (DR) method for hyperspectral image classification is proposed in this paper. The proposed method incorporates the contextual information and the class information to address the supervised transform-based DR problems. On one hand, a class-oriented sparse graph construction method is proposed, where the contextual information is integrated via a...
We introduce a novel framework for nonrigid feature matching among multiple sets in a way that takes into consideration both the feature descriptor and the features spatial arrangement. We learn an embedded representation that combines both the descriptor similarity and the spatial arrangement in a unified Euclidean embedding space. This unified embedding is reached by minimizing an objective function...
A regularized method to incorporate prior knowledge into spectral clustering in the form of pairwise constraints is proposed. This method is based on a weighted kernel principal component analysis (PCA) interpretation of spectral clustering with primal-dual least squares support vector machines (LS-SVM) formulations. The weighted kernel PCA framework allows incorporating pairwise constraints into...
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