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Recommender system is a specific type of intelligent systems, which exploits historical user ratings on items and/or auxiliary information to make recommendations on items to the users. It plays a critical role in a wide range of online shopping, e-commercial services and social networking applications. Collaborative filtering (CF) is the most popular approaches used for recommender systems, but it...
Scene text information extraction plays an important role in many computer vision applications. Most features in existing text extraction algorithms are only applicable to one text extraction stage (text detection or recognition), which significantly weakens the consistency in an end-to-end system, especially for the complex Chinese texts. To tackle this challenging problem, we propose a novel text...
Scene text information extraction plays an important role in many computer vision applications. Unlike most existing text extraction algorithms for English texts, in this paper, we focus on Chinese texts, which are more complex in stroke and structure. To tackle this challenging problem, we propose a novel convolutional neural network (CNN) based text structure feature extractor for Chinese texts...
A new index mode for extraction of water body with HJ-1 satellite CCD imagery - Normalized Difference of RVI and NDWI(NDRW) which combined both RVI and NDWI values is purposed in this paper based on analyzing the spectral characteristics of water in HJ-1 satellite CCD imagery and the advantages and disadvantages of three the most frequently used indexes, which are Ratio Vegetation Index(RVI), Normalized...
Various types of degradations such as uneven illumination, shadows, low contrast, smears and heavy noise densities often make thresholding of the document images a difficult job. In this paper, we describe a new adaptive approach for degraded-document binarization. We use the dilation and erosion in gray-scale image processing; as a result get a new image in which the shadow levels and noise densities...
The Loess Positive and Negative Terrains (P-N terrains), which are separated by loess shoulder-lines obviously, are crucial parameters in constructing the mechanism-processing models of the loess landform drainage systems. This paper proposed a novel algorithm for automatic extracting loess P-N terrains by using of 5m resolution Digital Elevation Models. Three main procedures are designed in the algorithm...
Text is a vital feature in applications of computer vision. Traditional Chinese character recognition techniques are mainly based on optical character recognition (OCR), however, they can't obtain satisfactory results from images affected by complex circumstance, such as different viewpoint, scale changes, addition of noise and complex background. To solve these problems, inspired by SIFT descriptor,...
Motion segmentation for dynamic scene is fundamental in computer vision. The key issue is to estimate number and parameters of transformations simultaneously. However, transformations cannot be measured by general Euclidean distance because of them not lying in vector space. In this paper, we convert transformations into fitness vectors which can be easily measured by cosine similarity. Then we apply...
Nodes in a Wireless Sensor Network (WSN) are usually powered by battery. In a WSN with multi-hop communications, some routing algorithms place heavy burden of forwarding packets on nodes close to a base station, causing these nodes to drain more battery energy and die earlier than others so that lifetime of the WSN is shortened. To solve the un even energy expenditure among nodes, we present a novel...
In this paper, we study the localization problem in large-scale Underwater Wireless Sensor Networks (UWSNs). Unlike in the terrestrial positioning, the global positioning system (GPS) can not work efficiently underwater. The limited bandwidth, the severely impaired channel and the cost of underwater equipment all makes the localization problem very challenging. Most current localization schemes are...
A multi-walled carbon nanotubes (MWNTs) film modified glassy carbon electrode (GCE) has been fabricated and showed potent electrocatalytic activity toward the electrochemical oxidation of salbutamol sulfate in phosphate buffer solution (pH=7.4). The linear dependence between the oxidation peak current of salbutamol sulfate and its concentration was observed in the range from 5.0 - 25 mumol/L with...
With the development of Internet, how to extract the useful information from data with the characteristics of distributed, mass, heterogeneous, complicated and correlative has become one of the most important problems in the domain of distributed data mining. To the limitation of the traditional ID3 algorithm, this paper presents an advanced distributed ID3 algorithm with its model based on mobile-agent...
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