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In online handwritten math expression recognition, one-pass dynamic programming can produce high-quality symbol graphs in addition to best symbol sequence hypotheses, especially after discriminative training and trigram graph rescoring. Impact of symbol graphs on whole expression recognition, however, has not been referred to yet, since the interface of structure analysis module does not work well...
A structure of low loss surface acoustic wave filter with Single-Phase Unidirectional Transducers (SPUDTS) is described in this paper. In this structure, two single-phase unidirectional transducers are placed at both sides of one apodized transducer. The loss has caused by bidirectional acoustic wave can be canceled by unidirectional characteristic of SPUDTS. Moreover the frequency response of the...
Smart camera system design and implementation is a challenging task due to the constant need to perform computationally demanding image processing tasks with the limited resource constraints of embedded systems. This paper presents the hardware and software co-design and implementation of the first stage of TraffiCam, an FPGA based smart camera prototype for traffic surveillance at intersections,...
This paper presents a new system for computer-aided orthognathic surgery which aims at correcting dento-facial defects and keeping patient away from much radiation and high cost of CT or MRI imaging. The system allows simulating the surgical correction on virtual 3-D model of the skull reconstructed with the acquisition of radiographs of three orthogonal views and facial mesh data generated by 3-D...
P2P technology is a new kind of architecture based on peer network. P2P implements the sharing of resources and services using the effective communication among the peers. Web service is a new technology used to develop distributed application. This paper introduces the concepts and technologies of P2P and Web service. Using JXTA protocol as the implementation technology of P2P and using JUDDI AXIS...
In view of the practical meaning of uncertain information in vague values, basic rules of distance measures and similarity measures between vague sets are proposed. A new distance measurement between real value vague sets is constructed and can satisfy the basic rules. Based on it, a new distance measure and similarity measures between interval vague values are constructed, which are proved to have...
Presently the system for recognition of Chinese medical pulse condition mainly aims at single pulse signal; the investigation of compound pulse signal is less. Article mainly researches single pulse signal and compound pulse signal. Firstly, we use wavelet analysis to extract character of pulse signal. Secondly, we make use of the nerve network to recognize. It constructs a considerably practical...
In the symbol recognition stage of online handwritten math expression recognition, the one-pass dynamic programming algorithm can produce high-quality symbol graphs in addition of the best recognized hypotheses. In this paper, we exploit the rich hypotheses embedded in a symbol graph to discriminatively train the exponential weights of different model likelihoods and the insertion penalty. The training...
We address the problem of how to represent or approximate speech lattices to be indexed with existing text indexers. We present a method named time-anchored lattice expansion (TALE), which can be implemented by a standard text indexer (STI). On a 170- hour lecture set, we compare TALE with other lattice indexing methods: confusion networks, position-specific posterior lattices (PSPL), and time-based...
Affective computing aims at analyzing users' affective states. Its applications include edutainment, HCI, and healthcare. Affective states may be conveyed through voice, facial expression, gesturing and physiological representations. This paper presents our attempt to develop a smart camera which can recognize simple head and hand gestures, for healthcare applications.
The objective of this paper is to compare the permanent magnet synchronous generator (PMSG) systems for wind turbines with the different drive trains and power ratings by design optimization. The comparison is mainly based on the cost and annual energy production (AEP) for a given wind climate. Firstly, the analytical models of the wind turbine, the 1-stage and 3-stage gearbox, the 3-phase radial-flux...
Affective computing aims at analyzing users' affective states. Its applications include edutainment, HCI, and healthcare. Affective states may be conveyed through voice, facial expression, gesturing and physiological representations. This paper presents our attempt to develop a smart camera which can recognize simple head and hand gestures, for healthcare applications.
Enterprise-scale search engines are generally designed for linear text. Linear text is suboptimal for audio search, where accuracy can be significantly improved if the search includes alternate recognition candidates, commonly represented as word lattices. We propose two methods to enable text indexers to approximately index lattices with little or no code change: "TMI" (Time-based Merging...
A symbol decoding and graph generation algorithm for online handwritten mathematical expression recognition is formulated. It differs from our previous system and most other systems in two aspects: (1) it embeds stroke grouping into symbol identification to form a unified probabilistic framework for symbol recognition; and (2) a symbol graph rather than a list of symbol sequence hypotheses is generated,...
The rotating center of kiln cross-section can be measured exactly by displacement measurement along zero-deformation direction of shell cross-section, whose measuring principle is studied. In order to distribute kiln loads evenly and minimize axis deflections, the fuzzy optimization model of kiln axis alignment is set up. The results show that fuzzy optimum alignment of kiln axis can improve kiln...
Multimodal user interaction technology aims at building more natural and intuitive interfaces allowing a user to interact with a computer in a way similar to human-to-human communication, for example, through speech and gesture. As a critical component in multimodal user interaction, multimodal input fusion explores the ways to effectively interpret the combined semantic interpretation of user inputs...
Source localization is an important problem in array signal processing and it is used to estimate the direction of arrival (DOA) of multiple sources. In this paper, we present a four-order cumulant based ESPRIT like method for passive localization of near-field narrowband non-Gaussian sources using a centrosymmetric cross array. The proposed method uses the multiple-rotational invariance among certain...
Much research of theory and application has been done on analytic hierarchy process after it was proposed. But the pair-wise comparison matrix with interval numbers has not been studied very well. In this paper, the indefinite circumstances that exist in the process of decision-making are considered. Therefore, interval numbers are adopted to replace the precise numbers of the judgment matrix when...
A segmentation posterior probability based endpointing algorithm for robust ASR is proposed. First, each speech signal is partitioned into homogeneous segments via auto-segmentation. Then posterior probabilities of all possible endpoints are computed, based on the segmentation likelihoods of all levels in a selected range. Endpoints with the highest posterior probabilities are finally selected. The...
Smart camera, or an intelligent camera, is an embedded vision system which captures and processes image to extract application-specific information in real time. Smart cameras are used in many applications such as automatic control systems, machine vision systems, automatic video surveillance systems and human computer interfaces. What makes a smart camera 'smart' is a special processing unit inside...
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