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2013 Ninth International Conference on Intelligent Information Hiding and Multimedia Signal Processing最新文献

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Acupoint Teaching System Based on Android 基于Android的穴位教学系统
Zhixiang Zhang, Ziming Zhang, Yuhui Gao, Xin Zhi, Jianfei Zhao
According to the good visualization interface and WiFi wireless function of the Android, We put forward a kind of pressure strength training system for medical students teaching, formulating the basic standards of the pressing position and the strength on the acupoint by experienced doctors, aims to training qualified students. Firstly using a low-power STM32 family of processors to complete data collection and AD conversion, and then develop Android mobile terminal software, as a visual teaching interface. We get the medical teaching purposes by interactive feedback wireless communication.
根据Android良好的可视化界面和WiFi无线功能,我们提出了一种针对医学生教学的压力力量训练系统,由经验丰富的医生制定按压穴位的位置和力度的基本标准,旨在培养合格的学生。首先采用低功耗STM32系列处理器完成数据采集和AD转换,然后开发Android移动端软件,作为可视化教学界面。通过交互式反馈无线通信达到医学教学目的。
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引用次数: 0
Multi-channel LED Driver with PWM Dimming and Temperature Self-Protection 多通道LED驱动器与PWM调光和温度自我保护
Shih-Chang Hsia, Jyun-Jia Ciou, Sheng-Yueh Lai
In this paper, we propose a novel LED driver chip for multi-channels based on current mirrors. The driver can change the LED brightness with a pulse width modulation (PWM). The chip built a four-order temperature sensor for chip protection. The chip is implemented with TSMC 0.25 UM CMOS HIGH VOLTAGE MIXED SIGNAL BASED. Using 60V power MOS for two channels LED driver, this chip can drive 120W LED string for smart street lighting. The chip core occupied about 1215um x 900um silicon area. The driving efficiency can achieve up to near 90%.
本文提出了一种基于电流反射镜的多通道LED驱动芯片。驱动程序可以通过脉冲宽度调制(PWM)改变LED亮度。该芯片构建了一个四阶温度传感器,用于芯片保护。该芯片采用台积电0.25 μ m CMOS高压混合信号实现。该芯片采用60V功率MOS双通道LED驱动器,可驱动120W LED串,用于智能路灯照明。芯片核心约占1215um × 900um的硅面积。驱动效率可达近90%。
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引用次数: 2
An Integrated Framework for Disaster Event Analysis in Big Data Environments 大数据环境下灾害事件分析集成框架
P. Tin, Thi Thi Zin, T. Toriu, H. Hama
Today world has witnessed the catastrophic consequences of natural and man-made disasters are demanding the urgent need for more research to advance fundamental knowledge and innovation for disaster prevention, mitigation and management. At the same time, the world is in the age of the Big Data revolution which holds the potential to mitigate the effects of disaster events by enabling access to critical real time information. Thus, in this paper an integrated framework for analyzing disaster events by using the Big Data analytics is proposed. The proposed framework shall address three key components to perform data organization, data integration and analysis, information presentation to users by utilizing Big Data with respect to disaster events. In doing so, the paper shall create a disaster domain-specific search engine using co-occurring theory and Markov chain concepts for preparing impacts of disaster attacks to make the society better aware of the situations. Specifically, stochastic clustering with constraints is used to automatically extract disaster events by defining the set of structural attributes. Some illustrative simulations are shown by using Big Data sources for the Great East Japan earthquake, tsunami and nuclear disaster events of 2011.
今天,世界目睹了自然灾害和人为灾害的灾难性后果,迫切需要进行更多的研究,以促进预防、减轻和管理灾害的基础知识和创新。与此同时,世界正处于大数据革命时代,通过获取关键的实时信息,大数据革命有可能减轻灾害事件的影响。因此,本文提出了一个利用大数据分析灾害事件的集成框架。提出的框架应解决三个关键组成部分,即利用大数据对灾害事件进行数据组织、数据集成和分析、向用户展示信息。为此,本文将利用共发生理论和马尔可夫链概念创建一个针对灾害领域的搜索引擎,以准备灾害袭击的影响,使社会更好地了解情况。具体而言,通过定义结构属性集,采用带约束的随机聚类方法自动提取灾害事件。利用大数据源对2011年东日本大地震、海啸和核灾难事件进行了一些说明性模拟。
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引用次数: 16
Designing and Realization of 3D Video Capture and Transfer System Based on Kinect 基于Kinect的三维视频采集与传输系统的设计与实现
Meng Yao, Ke-bin Jia
This paper presents the design and implementation of a real-time 3D video capture and transfer system based on Microsoft Kinect. On the collecting layer, multiple views of texture images and depth images are acquired by 3 Kinect cameras, which are placed as a parallel array. Hole filling and noise filtering techniques are used to fill holes and smooth noise in depth image on the processing layer. On the coding layer, video stream is processed using stereo video coding or multi-view video plus depth coding methods to deal with the huge amounts of data, and then transported in network on the transport layer. At last, media stream is decoded at the decoder layer, and shown on the stereoscopic display. Experimental results show that the proposed system presented in this paper can be well effective to fill the holes and reduce the noise for depth image. Stereo video coding and multi-view video plus depth coding method are also included in this system. This system can be applied to 3D video conferences, 3D entertainment and 3D security monitoring, etc.
本文介绍了一种基于微软Kinect的实时三维视频采集与传输系统的设计与实现。在采集层上,3个Kinect摄像头以平行阵列的形式放置,获取纹理图像和深度图像的多个视图。采用孔填充和噪声滤波技术在处理层对深度图像进行孔填充和噪声平滑处理。在编码层,视频流采用立体视频编码或多视点视频加深度编码的方式处理海量数据,在传输层进行网络传输。最后在解码器层对媒体流进行解码,并在立体显示器上显示。实验结果表明,本文提出的系统可以很好地填补深度图像的空洞,降低噪声。该系统还包括立体视频编码和多视点视频加深度编码方法。该系统可应用于3D视频会议、3D娱乐、3D安防监控等领域。
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引用次数: 0
Encryption in High Dynamic Range Images for RGBE Format RGBE格式的高动态范围图像加密
Jing-Ya Yan, Tzungher Chen, Chih-Hung Lin
This paper presents a new encryption scheme of high dynamic range (HDR) images. HDR images are more and more popular and network bandwidth is large enough to transmit large data, therefore, HDR images need to be properly protected, such as encryption. Here we use a new tool to achieve the purpose of encryption. The features of elementary cellular automata (ECA) that make us choose it as an encryption tool. ECA allows this encryption scheme be implemented easily and executed efficiently. The experimental results prove this encryption scheme sufficient security and doesn't need expensive computing resources.
提出了一种新的高动态范围(HDR)图像加密方案。HDR图像越来越受欢迎,网络带宽大到足以传输大数据,因此需要对HDR图像进行适当的保护,例如加密。这里我们使用一种新的工具来达到加密的目的。初等元胞自动机(ECA)的特点使我们选择它作为加密工具。ECA允许这种加密方案容易地实现和有效地执行。实验结果表明,该加密方案具有足够的安全性,且不需要昂贵的计算资源。
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引用次数: 2
Benchmark for Emergency Management Based on OGC WFS 基于OGC WFS的应急管理基准
Gang Liu, Pu Li, Y. Sha
This paper presents a benchmark consisting of 11 queries based on WFS standards formulated by OGC. The purpose of our study is to provide a reference standard, when the performance test is conducted on a geospatial web service platform which supports OGC WFS. This benchmark has the novel characteristic that it uses geospatial datasets and queries that are representative of WFS. We selected GeoServer as the WFS server, used Jmeter as a test tool and adopted the Texas data as test data set in order to carry out related experiments. Also included in the paper are benchmark results, which show the feasibility of our benchmark.
本文提出了一个基于OGC制定的WFS标准的由11个查询组成的基准测试。本研究的目的是为在支持OGC WFS的地理空间web服务平台上进行性能测试提供一个参考标准。这个基准测试有一个新颖的特点,它使用代表WFS的地理空间数据集和查询。我们选择GeoServer作为WFS服务器,使用Jmeter作为测试工具,采用Texas数据作为测试数据集进行相关实验。本文还给出了测试结果,验证了该测试的可行性。
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引用次数: 0
A Packet Loss Recovery of G.729 Speech Using Discriminative Model and N-Gram 基于判别模型和N-Gram的G.729语音丢包恢复
Takeshi Nagano, A. Ito
In a VoIP application, packet losses degrade speech quality. Especially, IP network under a large-scale disaster should cause severe packet losses. We have investigated the relationship between parameter loss and speech quality for G.729 codec. In this paper, we propose packet loss recovery method under severe packet loss condition, where the relationship was modeled by Support Vector Machine (SVM). Compared with the "repetition" method, the proposed method could improve speech quality. When we used both SVM and N-gram for concealing packet losses, we could obtain further improvement of speech quality.
在VoIP应用中,丢包会导致语音质量下降。特别是在大规模灾难下的IP网络会造成严重的丢包。研究了G.729编解码器的参数损失与语音质量的关系。本文提出了在严重丢包情况下的丢包恢复方法,该方法采用支持向量机(SVM)对丢包之间的关系进行建模。与“重复”方法相比,该方法可以提高语音质量。当我们同时使用SVM和N-gram来隐藏丢包时,我们可以得到进一步提高的语音质量。
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引用次数: 4
A New Robust Watermarking Scheme Based on Features Classification Tree 一种新的基于特征分类树的鲁棒水印方案
Y. Hsieh, Chia-Sung Chang, Jau-Ji Shen
Digital watermarking technique is a common solution to image authentication and authorization. Numerous researches in this area use modification method to alter the pixel value or the coefficients of transform domain to succeed the watermarking purpose. In this paper, we propose a novel watermarking scheme using the concept of association rules to build a features classification tree and Chinese remainder theorem to embed the index of the tree instead of watermark's native values, and via the inverse process the watermark extraction is accomplished. Additionally, it has application ability to any watermarking techniques in the same principle of modification method. Our experimental results show not only the robustness against different image processing attacks, but also the enlargement of capacity to progressively accept the gray scale watermark.
数字水印技术是图像认证和授权的常用解决方案。该领域的许多研究都采用修改方法,通过改变变换域的像素值或系数来达到水印的目的。本文提出了一种新的水印方案,利用关联规则的概念构建特征分类树,利用中国剩余定理嵌入树的索引而不是水印的固有值,通过逆过程实现水印的提取。此外,在相同的修改原理下,该方法对任何水印技术都具有应用能力。实验结果表明,该算法不仅对不同的图像处理攻击具有鲁棒性,而且对灰度水印的接受能力也在逐步增强。
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引用次数: 1
Head-Related Transfer Function Modeling Based on Finite-Impulse Response 基于有限脉冲响应的头部相关传递函数建模
Jian Zhang, Risheng Xia, Chundong Xu, Junfeng Li, Yonghong Yan, S. Sakamoto
Head-related transfer functions (HRTFs) or its time-domain counterpart, head-related impulse responses (HRIRs) play a crucial role in 3-D audio rendering. The HRIRs with a couple of hundred-sample lengths result in the high computation cost for the real-time 3-D audio applications especially when multiple sound sources are rendered simultaneously. To overcome this problem, various modeling approaches have been reported to shorten HRIRs. In this research, an efficient finite-impulse-response (FIR) model is studied which is essentially based on the concept of the minimum-phase modeling technique. In this method, the measured HRIRs are represented by the interaural time delay (ITD) and the magnitude spectra that are approximated by two FIR filters. To investigate the accuracy dependence of this modeling approach on the order of FIR filter, two psychoacoustic listening experiments were conducted. In the examinations, two HRIR databases (MIT and CIPIC) are exploited and evaluated in terms of sound source localization and sound quality by comparing the synthesized stimuli with the measured HRIRs and those with the FIR models of different orders. Experimental results indicated that the measured hundred-sample-length HRIRs can be sufficiently modeled by the low-order (a dozen of coefficients) FIR model from the perceptual point of view, which represents an important reduction in the computational cost for implementing real-time 3-D audio applications.
头部相关传递函数(hrtf)或其时域对应的头部相关脉冲响应(HRIRs)在三维音频渲染中起着至关重要的作用。数百个样本长度的hrir导致了实时三维音频应用的高计算成本,特别是当多个声源同时呈现时。为了克服这个问题,已经报道了各种建模方法来缩短hrir。本研究主要基于最小相位建模技术的概念,研究了一种有效的有限脉冲响应(FIR)模型。在该方法中,测量的hrir由两个FIR滤波器近似的声间时间延迟(ITD)和幅度谱表示。为了研究这种建模方法对FIR滤波器阶数的精度依赖性,进行了两次心理声学聆听实验。在实验中,利用MIT和CIPIC两个HRIR数据库,通过将合成刺激与测量的HRIR和不同阶次的FIR模型进行比较,从声源定位和音质方面进行了评估。实验结果表明,从感知的角度来看,低阶(十几个系数)FIR模型可以充分地模拟测量到的百样本长度的hrir,这对于实现实时三维音频应用来说是一个重要的计算成本降低。
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引用次数: 3
Designing and Accomplishing a Multiple Water Quality Monitoring System Based on SVM 基于支持向量机的多重水质监测系统的设计与实现
Zihan Pang, Ke-bin Jia
Along with the fast development of economy, the rational allocation of water resources has become one of the prerequisites which ensure the sustainable development of a country. Building a water quality surveillance and evaluation mechanism serving for managing regional water environment and addressing sudden contamination accident is of great importance. Based on the monitoring data on water quality, a multiple water quality monitoring system based on SVM is designed and accomplished. It established a corresponding water quality evaluation model by using the Gauss Radial Basis Function, and through offline studies of samples to guarantee the effectiveness and timeliness of this system. Besides the corresponding water quality classifying categories and instance interface are also figured out in the paper. This system has been successfully applied in the Central Line Project of South-to-North Water Diversion project, and according to the results the system is stable, effective and safety.
随着经济的快速发展,水资源的合理配置已成为保证一个国家可持续发展的前提之一。建立服务于区域水环境管理和突发性污染事故处理的水质监测评价机制具有重要意义。根据水质监测数据,设计并实现了基于支持向量机的多重水质监测系统。利用高斯径向基函数建立了相应的水质评价模型,并通过对样本的离线研究,保证了该系统的有效性和及时性。并给出了相应的水质分类类别和实例接口。该系统已成功应用于南水北调中线工程,结果表明该系统稳定、有效、安全。
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引用次数: 5
期刊
2013 Ninth International Conference on Intelligent Information Hiding and Multimedia Signal Processing
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