Generally, mechanical parts in Virtual Assembly systems are donated by rigid bodies. In this paper, we introduce a deformation technique called Lattice Shape Matching algorithm to animate deformable objects in virtual...
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Engine aerodynamic noise is a complex component of flight simulation, consisting of multiple groups of harmonics and broadband noise signals based on passing frequency. Harmonic simulation can effectively convey human...
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Haptic rendering of complex scenes is becoming more and more important with the development of the virtual reality in surgical simulation. This paper studies the haptic rendering of the boundaries between tissues with...
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A fast and efficient method is presented to extract address lines on both machine printed and handwritten Chinese mail envelopes. The algorithm is based on a bottom-up approach. First, we select out text blocks from c...
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ISBN:
(纸本)0889865477
A fast and efficient method is presented to extract address lines on both machine printed and handwritten Chinese mail envelopes. The algorithm is based on a bottom-up approach. First, we select out text blocks from connected components (CCs) and immediately group the text blocks into the initial lines. Then, the average text block features are computed to validate the initial text lines and guide an iterative split and merge process. Lines are split by merging the text CCs in detail according to criteria for similarity and consistency of neighborhood text blocks. Particularly, some non-text blocks within the lines are recovered if they are similar with other text blocks. A skew detection and, accordingly, deskew step is followed. We have tested the performance of our methods on a large mail sample test deck with different categories of envelopes, and an obvious improvement both on accuracy and on computation time could be achieved compared to our previous system.
A major unsolved problem in human-like agent is the construction and application of realistic human facial expression models. Human-like agents should interact with human by recognizing human facial expression and syn...
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In many cases, the topology of communcation systems can be abstracted and represented as graph. Graph theories and algorithms are useful in these situations. In this paper, we introduced an algorithm to enumerate all ...
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There were many accidents of large-scale wind turbines disconnecting from power grid in *** singlephase-to-ground fault cannot be correctly detected,single-phase-to-ground fault evolved to phase-to-phase ***-to-phase ...
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There were many accidents of large-scale wind turbines disconnecting from power grid in *** singlephase-to-ground fault cannot be correctly detected,single-phase-to-ground fault evolved to phase-to-phase ***-to-phase fault was isolated slowly,thus leading to low *** wind turbines without enough low voltage ride-through capacity had to be disconnected from the *** some wind turbines being disconnected from the grid,overvoltage caused by reactive power surplus made more wind turbines disconnect from the *** on the accident analysis,this paper presents solutions to above problems,including travelling waves based single-phase-to-ground protection,adaptive low voltage protection,integrated protection and control,and high impedance fault *** solutions lay foundations in theory and technology to prevent large-scale wind turbines disconnecting from the operating power grid.
In this paper, we are motivated to augment the holistic histogram representation with implicit spatial constrains. To be more concrete, we aim atending a good match function for the problem of object/scene categorizat...
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ISBN:
(纸本)1595937331
In this paper, we are motivated to augment the holistic histogram representation with implicit spatial constrains. To be more concrete, we aim atending a good match function for the problem of object/scene categorization which considers the spatial constraints against heavy clutter and occlusion. Our solution is a partial match kernel under the histogram representation which varies simultaneously at both the feature and spatial resolutions, named as the Feature and Spatial Covariant (FESCO) kernel. Both the FESCO kernel and its late fusion alternative achieve better match accuracy than Spatial Pyramid Match[13] and Pyramid Match[11]. We also apply the keypoint features to video indexing. And on a large scale TRECVID data sets of over 300 hours videos, to our best knowledge, this approach achieves the state-of-the-art result for a single feature. Copyright 2007 ACM.
With the explosive growth of Internet, more and more domain-specific environments appear, such as forums, blogs, MOOCs and etc. Domain-specific words appear in these areas and always play a critical role in the domain...
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keyphrase extraction aims to find representative phrases for a document. keyphrases are expected to cover main themes of a document. Meanwhile, keyphrases do not necessarily occur frequently in the document, which is ...
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