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Perceptual audio hashing, which summarizes big audio data into compact and robust digest, provides a useful tool for the identification, retrieval, authentication, and other information processing of multimedia contents. This paper proposes a perceptual audio hashing algorithm based on Radon transform in wavelet domain. The wavelet approximate coefficients are mapped into a two dimensional matrix...
GPS is very popular for locating the unmanned vehicles. However, it cannot solve all the problems about location. As crossroad is very important for unmanned vehicles, it is necessary for unmanned vehicles to recognize the crossroad and to load some other recognition tasks (such as traffic light recognition and traffic sign recognition) at the same time. The precision of GPS can hardly tell us if...
We address the problem of unstructured road detection. This paper tries to build a database named OffRoadScene, which addresses the need for experimental data to quantitatively evaluate the performance of different unstructured road detection algorithms. OffRoadScene is comprised of two level of databases. In the first level, each frame document consists of not only image information, but also information...
In this paper, we present a face recognition method based on simultaneous sparse approximations under varying illumination. Our method consists of two main stages. In the first stage, a dictionary is learned for each face class based on given training examples which minimizes the representation error with a sparseness constraint. In the second stage, a test image is projected onto the span of the...
In recent years, several kinds of tree structures for dynamic programming have been proposed. All the former trees only include pixels of the image. While in this paper, a new type of tree, which includes all the edges in the image, is constructed. In addition, weighted dynamic programming is proposed in order to improve the conventional dynamic programming. The weighted dynamic programming here is...
Privacy is an increasingly cited concept in the large-scale deployment of web services in pervasive computing. The necessity of putting data-owners' personal information online and unwanted intentions to access data-owners' information augment the risk of privacy disclosure. To address this problem, we propose a policy-based privacy protection mechanism that protects personal information by policy...
With more and more new ideas and demands of architecture, it has become an increasing problem of the architecture lag, severely affecting the quality and efficiency of the architecture. The application of modern educational technology leads to the further research on architecture education reform. The paper explores the architecture education based on modern education technology of digital and internet...
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