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Proceedings 2014 IEEE International Conference on Security, Pattern Analysis, and Cybernetics (SPAC)最新文献

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Single image defogging with single and multiple hybrid scattering model 基于单、多混合散射模型的单幅图像去雾
Weijiang Feng, Naiyang Guan, Xiang Zhang, Xuhui Huang, Zhigang Luo
Image defogging (IDF) removes influences of fogs from an image to improve its quality. Since defogged images can significantly boost the performance of subsequent processing, IDF has attracted many attentions from the computer vision community. However, existing IDF algorithms are built on the assumption that light is scattered once by a grain. Since such assumption is violated if images are contaminated by dense haze or heavy fog, traditional IDF algorithms often fail in this situation. In this paper, we propose a hybrid image defogging (HIDF) algorithm to overcome this deficiency. In particular, HIDF applies the single scattering physics model (SSPM) to pixels dominated by single scattering of light, and applies the multiple scattering physics model (MSPM) to remaining pixels. To distinguish two types of pixels, HIDF utilizes the optical thickness of corresponding pixels. If optical thickness is smaller than a threshold that determines whether the single scattering or the multiple scattering dominates, HIDF applies the SSPM, and HIDF applies the MSPM otherwise. Experimental results on several popular foggy images demonstrate that HIDF competes with the state-of-the-art algorithms, and show the promise of HIDF for defogging heavily foggy images.
图像去雾(IDF)是消除雾对图像的影响,以提高图像质量。由于去雾图像可以显著提高后续处理的性能,因此IDF引起了计算机视觉界的广泛关注。然而,现有的IDF算法是建立在光被一个颗粒散射一次的假设之上的。由于当图像被浓密的雾霾或浓雾污染时,就违背了这一假设,传统的IDF算法在这种情况下往往会失败。在本文中,我们提出一种混合图像去雾(HIDF)算法来克服这一缺陷。其中,HIDF对单次散射占主导的像元采用单次散射物理模型(SSPM),对剩余像元采用多次散射物理模型(MSPM)。为了区分两种类型的像素,HIDF利用相应像素的光学厚度。如果光学厚度小于决定单次散射还是多次散射占主导地位的阈值,则HIDF采用SSPM,否则采用MSPM。在一些流行的雾图像上的实验结果表明,HIDF与最先进的算法相竞争,并显示了HIDF对重雾图像去雾的前景。
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引用次数: 5
Correntropy induced metric based graph regularized non-negative matrix factorization 相关熵诱导的基于度量的图正则化非负矩阵分解
Bin Mao, Naiyang Guan, D. Tao, Xuhui Huang, Zhigang Luo
Non-negative matrix factorization (NMF) is an efficient dimension reduction method and plays an important role in many pattern recognition and computer vision tasks. However, conventional NMF methods are not robust since the objective functions are sensitive to outliers and do not consider the geometric structure in datasets. In this paper, we proposed a correntropy graph regularized NMF (CGNMF) to overcome the aforementioned problems. CGNMF maximizes the correntropy between data matrix and its reconstruction to filter out the noises of large magnitudes, and expects the coefficients to preserve the intrinsic geometric structure of data. We also proposed a modified version of our CGNMF which construct the adjacent graph by using sparse representation to enhance its reliability. Experimental results on popular image datasets confirm the effectiveness of CGNMF.
非负矩阵分解(NMF)是一种高效的降维方法,在许多模式识别和计算机视觉任务中发挥着重要作用。然而,传统的NMF方法由于目标函数对异常值敏感,并且没有考虑数据集的几何结构,因此鲁棒性不强。本文提出了一种相关图正则化NMF (CGNMF)来克服上述问题。CGNMF通过最大化数据矩阵与其重构之间的熵值来滤除大幅度的噪声,并期望系数保持数据固有的几何结构。我们还提出了一种改进版本的CGNMF,通过使用稀疏表示来构造相邻图,以提高其可靠性。在常用图像数据集上的实验结果证实了CGNMF的有效性。
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引用次数: 20
MPC and SADE for UAV real-time path planning in 3D environment 基于MPC和SADE的无人机三维实时路径规划
Qiang Wang, An Zhang, H. Sun
This paper proposed a method of real-time path planning for UAV based on model predictive control and self adaptive differential evolutionary algorithm First the model of three-dimensional path planning of UAV was built by model predictive control Then the encoding method based on deflection angle was given. The constraints were combined with the self adaptive differential evolutionary algorithm to make the path more rational and the searching more efficiently. The simulation analyses showed that the method of path planning is available and efficient, that could satisfy the requirements of terrain following and threat avoidance.
提出了一种基于模型预测控制和自适应差分进化算法的无人机实时路径规划方法,首先利用模型预测控制建立了无人机三维路径规划模型,然后给出了基于偏角的无人机实时路径规划编码方法。将约束条件与自适应差分进化算法相结合,使路径更加合理,搜索效率更高。仿真分析表明,该路径规划方法是有效的,能够满足地形跟踪和威胁规避的要求。
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引用次数: 5
Artificial robot navigation based on gesture and speech recognition 基于手势和语音识别的人工机器人导航
Ze Lei, Zhaohui Gan, Min Jiang, Ke Dong
Human-computer interaction is a hot topic in artificial intelligence. Artificial navigation is an interesting application of human-computer interaction, which control the action of the target device by speech or gestures information. The main virtue of artificial navigation is that it can control target device within a distance without any remote control device. This technology can be used in the areas of robot navigation, vehicle navigation in the industrial site and virtual reality. This paper proposed an algorithm for robot navigation which combining gesture recognition with speech recognition. Firstly, use nine gesture instructions and nine voice commands to establish reference models. Secondly, extract real-time Skeleton information and the current speech messages by Kinect. Thirdly, evaluate the fitness of the current gesture and speech information of the reference model. Finally, deduce the navigation control instructions to command the robot's movement. Gestures and speech can compensate for each other's deficiencies, improve the recognition rate and robustness of the algorithm, reduce the computational complexity of algorithm, makes the human-computer interaction more simple, clear and natural.
人机交互是人工智能领域的研究热点。人工导航是人机交互的一个有趣的应用,它通过语音或手势信息来控制目标设备的动作。人工导航的主要优点是可以在不需要任何遥控装置的情况下控制一定距离内的目标设备。该技术可应用于机器人导航、工业现场车辆导航和虚拟现实等领域。提出了一种将手势识别与语音识别相结合的机器人导航算法。首先,使用9个手势指令和9个语音指令建立参考模型。其次,通过Kinect提取实时骨架信息和当前语音信息。第三,评估参考模型的当前手势和语音信息的适应度。最后推导出导航控制指令,指挥机器人的运动。手势和语音可以相互弥补不足,提高算法的识别率和鲁棒性,降低算法的计算复杂度,使人机交互更加简单、清晰、自然。
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引用次数: 12
Design and implementation of one vertical video search engine 一个垂直视频搜索引擎的设计与实现
Yingyi Liang, Zhenyu He, Yi Li
In this paper, a video vertical search engine is designed and implemented based on the theory of vertical search engine. Firstly, we introduce the vertical search engine and its research situation at home and abroad, analyze the principle of implementing the vertical search engine, and introduce the key technology used in this paper, such as subject information acquisition method, Chinese segmentation algorithm, and the search result re-sorting. We provide the video resource acquisition process and the video resources storage, and repeat video resources exclusion. Then, we analyze an information retrieval tool library, Lucene, which is with a advanced design and superior performance. Based on this library, a Chinese segmentation algorithm and a result sorting method are added. Unlike current other studies, a variable length matching strategy is taken for designing Chinese word with bidirectional matching method for disambiguation. Compared with the latest open source word segmentation algorithm, our segmentation algorithm designed in this paper outperforms better. With the video resources fetching from the internet and the Chinese word segmentation of VKAnalyzer extending from Lucene designed and implemented in the paper, we design related video re-sorting methods by different ways, such as length, times and comments, and implement the sorting method for search results according to users' various requirements. The experiments shows that the recall rate of the search engine is 90% and the accuracy is 97%, as are satisfactory.
本文基于垂直搜索引擎的理论,设计并实现了一个视频垂直搜索引擎。首先介绍了垂直搜索引擎及其国内外研究现状,分析了垂直搜索引擎的实现原理,并介绍了本文所用到的关键技术,如主题信息获取方法、中文分词算法、搜索结果重排序等。我们提供了视频资源采集流程和视频资源存储,重复视频资源排除。然后,我们分析了一个设计先进、性能优越的信息检索工具库Lucene。在此基础上,增加了中文切分算法和结果排序方法。与现有研究不同的是,本文采用变长匹配策略设计了双向匹配消歧的汉语词语。与最新的开源分词算法相比,本文设计的分词算法具有更好的性能。利用本文设计并实现的从互联网获取的视频资源和从Lucene扩展而来的VKAnalyzer中文分词功能,按照长度、次数、评论等不同的方式设计相关的视频重排序方法,并根据用户的不同需求实现对搜索结果的排序方法。实验表明,该搜索引擎的查全率为90%,准确率为97%,令人满意。
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引用次数: 2
Improved genetic algorithm for emergency logistics distribution vehicle routing problems 改进遗传算法求解应急物流配送车辆路径问题
Minghua Chen
Based on the research on Vehicle Routing Problems (VRP), vehicle scheduling and operating work can be more rational, which consequently reduces the logistical cost on the condition of meeting the timeliness requirement of emergency logistics. In this paper, we give an analysis of the characteristics of VRP in emergency logistics. According to the practical situations of VRP, an improved genetic algorithm (GA) is proposed and applied to a general mathematical model established for VRP in emergency logistics in this paper. Simulation results show that the algorithm is feasible and effective.
通过对车辆路径问题(VRP)的研究,可以使车辆调度和运行工作更加合理,从而在满足应急物流及时性要求的前提下降低物流成本。本文分析了应急物流中VRP的特点。根据VRP的实际情况,提出了一种改进的遗传算法(GA),并将其应用于应急物流中VRP的通用数学模型。仿真结果表明了该算法的可行性和有效性。
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引用次数: 5
Laplacian-Hessian regularization for semi-supervised classification 半监督分类的laplace - hessian正则化
Hongli Liu, Weifeng Liu, Dapeng Tao, Yanjiang Wang
With exploiting a small number of labeled images and a large number of unlabeled images, semi-supervised learning has attracted centralized attention in recent years. The representative works are Laplacian and Hessian regularization methods. However, Laplacian method tends to a constant value and poor generalization in the process of classification. Although Hessian energy can properly forecast the data points beyond the range of the domain, its regularizer probably leads to useless results in the process of regression. So the Laplacian-Hessian regression method for image classification is proposed, which can both predict the data points and enhance the stability of Hessian regularizer. To evaluate the Laplacian-Hessian method, Columbia Consumer Video database is employed in the paper. Experimental results demonstrate that the proposed method perform better than Laplacian or Hessian method in the matter of classification and stability.
半监督学习利用了少量有标记的图像和大量未标记的图像,近年来引起了人们的关注。具有代表性的是拉普拉斯正则化方法和黑森正则化方法。然而,拉普拉斯方法在分类过程中趋向于定值,泛化性差。虽然Hessian能量可以很好地预测超出域范围的数据点,但它的正则化器在回归过程中可能导致无用的结果。为此,提出了一种既能预测数据点又能提高Hessian正则化器稳定性的拉普拉斯-Hessian回归图像分类方法。为了对Laplacian-Hessian方法进行评价,本文采用了哥伦比亚消费者视频数据库。实验结果表明,该方法在分类和稳定性方面都优于拉普拉斯和Hessian方法。
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引用次数: 4
Robust visual tracking with spatial phase correlation 基于空间相位相关的鲁棒视觉跟踪
Yufei Zha, Lichao Zhang, Yuan Yang, Bing Qin, Hao Li, Huanyu Li
The visual tracker based on phase correlation is always failure, because the response is dirac δ function disturbed by the noise and clutter. Recently, the desired correlated output distribution is adopted in ASEF, which obtains the excellent filtered result. Inspired by the above method, spatial phase correlation is proposed in this paper, which designs the response related with the object spatial position to replace the dirac δ function, which can achieve a robust filter. The phase difference is embedded into the response frequency spectrum to obtain the coarse location of the object. Then the phase saliency is exploited to finely track the object for the excellent performance. To avoid the drifting problem, adaptive template is updated by the peak-sidelobe ratio(PSR), which evaluates the tracking results. Numerical experiments show that the proposed algorithm performs favorably against the state-of-the-art trackers in speed, accuracy and robustness.
由于响应是狄拉克δ函数,受到噪声和杂波的干扰,基于相位相关的视觉跟踪器常常失效。近年来,在ASEF中采用了期望的相关输出分布,得到了良好的滤波效果。受上述方法的启发,本文提出了空间相位相关,通过设计与目标空间位置相关的响应来代替狄拉克δ函数,从而实现鲁棒滤波。将相位差嵌入到响应频谱中,得到目标的粗略位置。然后利用相位显著性对目标进行精细跟踪,从而获得优异的性能。为了避免漂移问题,采用峰值旁瓣比(PSR)对自适应模板进行更新,并对跟踪结果进行评价。数值实验表明,该算法在速度、精度和鲁棒性方面都优于当前最先进的跟踪器。
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引用次数: 0
The online transportation problem with the sudden traffic congestions 突发性交通拥堵下的在线交通问题
Hu Mao-Lin
We study the online transportation problem with the sudden traffic congestions where the running time of online vehicles is our optimization objective. We consider an optimal combination of the Greedy Strategy, the Reposition Strategy and the Waiting strategy for the online scheduling of vehicles, as result a Harmonic Strategy with online algorithm model is given in compensation of the disadvantages of the three basic strategy. By analyzing the competitive ratio and competitive performance of the Harmonic Strategy, the result comes clearly to show that the Harmonic Strategy harmonizes well the three strategies and makes some progress towards the competitive performance.
研究突发性交通拥挤条件下的在线交通问题,以在线车辆的运行时间为优化目标。考虑了贪婪策略、重新定位策略和等待策略对车辆在线调度的最优组合,给出了一种具有在线算法模型的调和策略,弥补了三种基本策略的不足。通过对调和战略的竞争率和竞争绩效的分析,结果清楚地表明,调和战略很好地协调了三种战略,并在竞争绩效方面取得了一定的进步。
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引用次数: 0
An improvement on approximate dynamic programming for multi-document summarization 多文档摘要的近似动态规划改进
Yihui Luo, Shuchu Xiong
A new improved approximate dynamic programming for multi-document summarization is presented. Our proposed algorithm improves the state-of-art approximate dynamic programming algorithm for multi-document summarization in [1]. The improvement of our method is attributed to the adding search in the backward direction at each sequential step of the dynamic programming procedure. The experimental results for multi-document summarization tasks on DUC2002 and DUC2004 data sets validate the effectiveness of our proposed method.
提出了一种新的改进的多文档摘要近似动态规划方法。本文提出的算法改进了文献[1]中最先进的多文档摘要近似动态规划算法。该方法的改进是由于在动态规划过程的每个顺序步骤中都进行了反向加法搜索。在DUC2002和DUC2004数据集上的多文档摘要实验结果验证了本文方法的有效性。
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引用次数: 1
期刊
Proceedings 2014 IEEE International Conference on Security, Pattern Analysis, and Cybernetics (SPAC)
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