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The bag-of-feature (BoF) model provides a way to construct high-level representation for image classification. Although spatial pyramid matching (SPM) has been incorporated into many of its extensions, these models intrinsically lack the mechanism to utilize frequency domain information. In this paper, we propose the locality-constrained encoding of frequency and spatial information (LEFSI) algorithm,...
Histopathology image classification can provide automated support towards cancer diagnosis. In this paper, we present a transfer learning-based approach for histopathology image classification. We first represent the image feature by Fisher Vector (FV) encoding of local features that are extracted using the Convolutional Neural Network (CNN) model pretrained on ImageNet. Next, to better transfer the...
In this paper, we propose a novel semi-supervised classification method for four types of lung nodules, i.e., well-circumscribed, vascularized, juxta-pleural and pleural-tail, in low dose computed tomography (LDCT) scans. The proposed method focuses on classifier design by incorporating the knowledge extracted from both training and testing datasets, and contains two stages: (1) bipartite graph construction,...
Categorizing web-based videos is an important yet challenging task. The difficulties arise from large data diversity within a category, lack of labeled data, and degradation of video quality. This paper presents a large scale video taxonomic classification scheme (with more than 1000 categories) tackling these issues. Taxonomic structure of categories is deployed in classifier training. To compensate...
Automatic categorization of videos in a Web-scale unconstrained collection such as YouTube is a challenging task. A key issue is how to build an effective training set in the presence of missing, sparse or noisy labels. We propose to achieve this by first manually creating a small labeled set and then extending it using additional sources such as related videos, searched videos, and text-based webpages...
In this paper, we present an approach based on information fusion for road networks extraction from high-resolution multi-spectral satellite image data that builds upon pixel-based fuzzy logic segmentation approach. This road networks extraction system includes three different modules: geometrical features processing based on local context; segmentation based on fuzzy classification; angular texture...
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