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2018 IEEE 23rd International Conference on Digital Signal Processing (DSP)最新文献

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A Progressive Enhancement Method for Noisy and Reverberant Speech 噪声和混响语音的递进增强方法
Pub Date : 2018-11-01 DOI: 10.1109/ICDSP.2018.8631860
Xiaofeng Shu, Yi Zhou, Yin Cao
In this paper, a speech enhancement method based on the framework of progressive deep neural networks (PDNNs) is proposed for low signal-to-noise ratio (SNR) and highly reverberant environments. It aims at assisting the complicated regression task of mapping noisy and reverberant speech to clean speech by utilizing two independent tasks, which suppress reverberation and noises respectively. Furthermore, a progressive learning approach is used for each task, which brings intermediate learning targets to enhance system performances. Experimental results reveal that the proposed method can achieve improvements in both objective and subjective evaluations in low SNR and high reverberation time 60 (RT60) environments when compared with the conventional deep neural network-based method.
针对低信噪比和高混响环境,提出了一种基于渐进式深度神经网络框架的语音增强方法。它的目的是利用两个独立的任务,分别抑制混响和噪声,来辅助复杂的将噪声和混响语音映射到干净语音的回归任务。此外,每个任务采用渐进式学习方法,引入中间学习目标,提高系统性能。实验结果表明,与传统的基于深度神经网络的方法相比,该方法在低信噪比和高混响时间60 (RT60)环境下的客观和主观评价都有提高。
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引用次数: 0
Multi-bit Decentralized Detection of a Weak Signal in Wireless Sensor Networks with a Rao test 基于Rao测试的无线传感器网络弱信号多比特分散检测
Pub Date : 2018-11-01 DOI: 10.1109/ICDSP.2018.8631592
Xu Cheng, D. Ciuonzo, P. Rossi
We consider decentralized detection (DD) of an unknown signal corrupted by zero-mean unimodal noise via wireless sensor networks (WSNs). To cope with energy and/or bandwidth constraints, we assume that sensors adopt multilevel quantization. The data are then transmitted through binary symmetric channels to a fusion center (FC), where a Rao test is proposed as a simpler alternative to the generalized likelihood ratio test (GLRT). The asymptotic performance analysis of the multi-bit Rao test is provided and exploited to propose a (signal-independent) quantizer design. Numerical results show the effectiveness of Rao test in comparison to GLRT and the performance gain obtained by threshold optimization.
我们考虑通过无线传感器网络(WSNs)对被零均值单峰噪声破坏的未知信号进行分散检测(DD)。为了应对能量和/或带宽的限制,我们假设传感器采用多电平量化。然后,数据通过二进制对称通道传输到融合中心(FC),在那里,Rao测试被提出作为广义似然比测试(GLRT)的更简单的替代方案。给出了多位Rao测试的渐近性能分析,并利用该分析提出了一种(信号无关的)量化器设计。数值结果表明,Rao测试与GLRT测试相比是有效的,并且阈值优化获得了性能增益。
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引用次数: 5
MiniTracker: A Lightweight CNN-based System for Visual Object Tracking on Embedded Device MiniTracker:一个轻量级的基于cnn的嵌入式设备视觉目标跟踪系统
Pub Date : 2018-11-01 DOI: 10.1109/ICDSP.2018.8631813
Bingyi Zhang, Xin Li, Jun Han, Xiaoyang Zeng
Visual object tracking (VOT) is a computer vision application and has a wide range of use. However, related state of the art algorithms using deep learning methods, are computationally intensive and storage explosive. Whats more, despite many deep learning accelerators have been proposed, many of them are general structure. So, in this paper, we propose a lightweight CNN-based system–-MiniTracker, integration of algorithm and hardware–-particularly efficient for VOT. Because of the fully-convolutional Siamese network we used, the parameters of network do not need online training, which reduces computation consumptions dramatically. We adapt the original Siamese network (SN) into effective hardware implementation by parameter pruning and quantization. Then a lightweight CNN with the 8-bit parameters is produced, which is only 1.939MB. The real tracking rate is 18.6 frames per second at the cost of 1.284W on ZedBoard. Moreover, Compared with other hardware implementations, our system is robust to challenging scenarios, such as occlusions, changing appearance, illumination variations and etc.
视觉目标跟踪(VOT)是一种计算机视觉应用,有着广泛的用途。然而,使用深度学习方法的相关最新算法是计算密集型和存储爆炸性的。因此,在本文中,我们提出了一种轻量级的基于cnn的系统——MiniTracker,它集成了算法和硬件,特别适用于VOT。由于我们使用的是全卷积Siamese网络,网络的参数不需要在线训练,大大降低了计算量。通过参数修剪和量化,将原有的Siamese网络(SN)改造为有效的硬件实现。然后得到一个8位参数的轻量级CNN,只有1.939MB。在ZedBoard上,真实的跟踪速率为每秒18.6帧,成本为1.284W。此外,与其他硬件实现相比,我们的系统对具有挑战性的场景具有鲁棒性,例如遮挡,外观变化,光照变化等。
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引用次数: 7
Resolving Focal Plane Ambiguity using Chromatic Aberration and Color Uniformity Principle 利用色差和色彩均匀性原理解决焦平面模糊
Pub Date : 2018-11-01 DOI: 10.1109/ICDSP.2018.8631644
Himanshu Kumar, Sumana Gupta, K. Venkatesh
Focal Plane Ambiguity (FPA) is a fundamental limitation of the Depth from Defocus (DFD) technique and refers to ambiguity of two possible distances corresponding to a single defocus blur value. Since, mix-sided scenes exist frequently in images and image-sequences, the assumption of a one sided focused scene often does not hold true. This leads to errors in the estimated defocus map. However, the inherent ordering of defocus blurs at the edges due to chromatic aberration in the R, G and B color planes can be used to correct this ambiguity. But, in highly defocused regions the ordering of defocus blurs becomes unreliable as the detection of edges becomes erroneous. In this paper, we propose a novel region based method using Color Uniformity Principle (CUP) for detecting the ordering of defocus blurs in R, G and B color planes to resolve the FPA.
焦平面模糊(Focal Plane Ambiguity, FPA)是离焦深度(Depth from Defocus, DFD)技术的一个基本缺陷,它是指一个离焦模糊值对应的两个可能距离的模糊度。由于混合面场景经常存在于图像和图像序列中,因此单面聚焦场景的假设往往不成立。这将导致估计散焦图中的错误。然而,由于R、G和B色平面的色差导致的边缘离焦模糊的固有顺序可以用来纠正这种模糊性。但是,在高度散焦区域,由于边缘检测错误,散焦模糊的排序变得不可靠。本文提出了一种新的基于区域的方法,利用颜色均匀性原理(CUP)来检测R、G和B颜色平面上离焦模糊的顺序,以解决FPA问题。
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引用次数: 1
A Partial least squares-based regression approach for analysis of frontotemporal dementia gene markers in human brain gene microarray data 基于偏最小二乘的回归方法分析人脑基因微阵列数据中额颞叶痴呆基因标记
Pub Date : 2018-11-01 DOI: 10.1109/ICDSP.2018.8631649
S. Chan, H. C. Wu, Jianqiang Lin, Z. G. Zhang
Conventional procedures for preliminary diagnosis of Alzheimer's disease (AD) are invasive and painful. It is important to devise noninvasive biomarker which can provide conclusive diagnosis of early onset of AD and mild cognitive impairment (MCI). Recent attention has been drawn recently to gene microarray analysis for understanding disease onset and progression. In this paper, we extend our previous work to develop a new large-scale partial least squares based multivariate regression approach for the identification of putative interacting partners of gene markers for high-throughput gene microarray and other related data. Preliminary analysis of the interacting gene partners of a marker gene of frontotemporal dementia show that the identified genes are significantly enriched in innate immune and inflammatory response processes, which align well with the nature of the disease. These suggest that the proposed approach may serve as a valuable tool for inferring putative gene interacting partners in biological studies involving gene microarray data and other related datasets.
阿尔茨海默病(AD)初步诊断的常规程序是侵入性的和痛苦的。设计无创生物标志物对早发性AD和轻度认知障碍(MCI)的诊断具有重要意义。近年来,基因微阵列分析已引起人们的关注,以了解疾病的发生和进展。在本文中,我们扩展了之前的工作,开发了一种新的基于大规模偏最小二乘的多元回归方法,用于鉴定高通量基因微阵列和其他相关数据中基因标记的推定相互作用伙伴。对额颞叶痴呆标记基因的相互作用基因伴侣的初步分析表明,所鉴定的基因在先天免疫和炎症反应过程中显著富集,这与该疾病的性质很好地一致。这表明,该方法可以作为一种有价值的工具,在涉及基因微阵列数据和其他相关数据集的生物学研究中推断假定的基因相互作用伙伴。
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引用次数: 1
Hearing loss identification via wavelet entropy and combination of Tabu search and particle swarm optimization 基于小波熵和禁忌搜索与粒子群优化相结合的听力损失识别
Pub Date : 2018-11-01 DOI: 10.1109/ICDSP.2018.8631839
Chaosheng Tang, Elizabeth Lee
Sensorineural hearing loss is correlated to massive neurological or psychiatric disease. We treated a three-class classification problem: HC, LHL, and RHL, and checked three different orientation images: coronal, axial, and sagittal. Different methods are compared with 10x6-fold cross validation. The results show that our proposed system shows better performance in detecting hearing loss.
感音神经性听力损失与大量神经或精神疾病有关。我们处理了一个三类分类问题:HC、LHL和RHL,并检查了三种不同的定向图像:冠状、轴状和矢状。不同方法进行10 × 6倍交叉验证比较。结果表明,该系统在检测听力损失方面具有较好的性能。
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引用次数: 13
Multiple Classifiers Global Dynamic Fusion Location System based on WiFi and Geomagnetism 基于WiFi和地磁的多分类器全球动态融合定位系统
Pub Date : 2018-11-01 DOI: 10.1109/ICDSP.2018.8631691
Feng-yan Xu, Linfu Duan, Xiansheng Guo, Lin Li, F. Hu
The existing WiFi and geomagnetism based positioning methods using single classifier show low accuracy because they are sensitive to changing environments. In this paper, we propose a global dynamic fusion location algorithm for multiple classifiers based on WiFi and geomagnetic fingerprints. In the offline phase, we first divide a positioning environment into some grid points and construct RSS and geomagnetic fingerprints for each grid point. Then, we train multiple classifiers by using the constructed fingerprints. Second, we derive a global dynamic fusion weight training method for each grid point through the global supervised optimization learning. In the online phase, given an RSS testing sample, we select the matching weights for fusion by using K-nearest neighbor (KNN). Our proposed multiple classifiers global dynamic fusion algorithm can make full use of the intrinsic complementarity of multiple classifiers, thus effectively improving the positioning accuracy of RSS and geomagnetic fingerprints. Experimental results show that the proposed algorithm outperforms some existing methods in complex indoor environments.
现有的基于WiFi和地磁的单分类器定位方法对环境变化敏感,精度较低。本文提出了一种基于WiFi和地磁指纹的多分类器全局动态融合定位算法。在离线阶段,我们首先将定位环境划分为若干网格点,并为每个网格点构建RSS和地磁指纹;然后,我们利用构造的指纹训练多个分类器。其次,通过全局监督优化学习,推导出每个网格点的全局动态融合权值训练方法;在在线阶段,给定一个RSS测试样本,我们使用k -最近邻(KNN)选择匹配权值进行融合。我们提出的多分类器全局动态融合算法可以充分利用多分类器的内在互补性,从而有效提高RSS和地磁指纹的定位精度。实验结果表明,该算法在复杂的室内环境中优于现有的一些方法。
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引用次数: 5
A Design of Variable Digital Filters Based on FRM Technique and Frequency Warping 基于FRM技术和频率翘曲的可变数字滤波器设计
Pub Date : 2018-11-01 DOI: 10.1109/ICDSP.2018.8631608
Yang Chen, Tong Ma, Ying Wei
A design of variable filters is proposed based on frequency response masking technique and frequency warping. Instead of using traditional masking filters, the masking filters in the proposed method are obtained by nonlinear transformation to a prototype filter using frequency wrapping. The design process is given and the mapping between the final filters and the control parameters are deduced. Experiments illustrate the effectiveness of the proposed method.
提出了一种基于频率响应掩蔽技术和频率翘曲的可变滤波器设计方法。该方法不使用传统的掩蔽滤波器,而是采用频率包裹的方法对原型滤波器进行非线性变换得到掩蔽滤波器。给出了设计过程,推导了最终滤波器与控制参数之间的映射关系。实验证明了该方法的有效性。
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引用次数: 1
Vision-Based Rain Gauge for Dynamic Scenes 基于视觉的动态场景雨量计
Pub Date : 2018-11-01 DOI: 10.1109/ICDSP.2018.8631542
Cheen-Hau Tan, Jie Chen, Yun Ni, Lap-Pui Chau, L. M. Soh
In this paper we develop a vision-based rain intensity measurement method for dynamic scenes. The method first measures the area density of rain by analyzing temporal changes in pixel values in the video input. The area density, represented as a binary rain map, is then mapped to a rain intensity value using linear regression. To ensure temporal consistency of scene content across frames in dynamic scenes, we applied superpixel-based content alignment. Potential false detections in the binary rain map are removed using directional morphological opening. Experiments show that both superpixel-based content alignment and morphological opening are important for good rain map generation and rain intensity estimation
本文提出了一种基于视觉的动态场景雨强测量方法。该方法首先通过分析视频输入中像素值的时间变化来测量雨的面积密度。区域密度表示为二值雨图,然后使用线性回归将其映射为雨强度值。为了确保动态场景中场景内容跨帧的时间一致性,我们应用了基于超像素的内容对齐。在二值雨图中潜在的错误检测被使用定向形态学打开去除。实验表明,基于超像素的内容对齐和形态开放对于生成良好的雨图和估计雨强都很重要
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引用次数: 0
Improved Nonparallel Hyperplanes Support Vector Machines for Multi-class Classification 多类分类的改进非并行超平面支持向量机
Pub Date : 2018-11-01 DOI: 10.1109/ICDSP.2018.8631672
F. Bai, Ruijie Liu
In this paper, we present an improved nonparallel hyperplanes classifier for multi-class classification, termed as INHCMC. As in the nonparallel support vector machine (NPSVM) for binary classification, the ε-insensitive loss function is adopted in the primal problems of multi-class classification to improve the sparseness associated with the nonparallel hyperplanes classifier for multi-class classification (NHCMC) where the quadratic loss function is used. Experimental results on some benchmark datasets are reported to show the effectiveness of our method in terms of sparseness and classification accuracy.
本文提出了一种改进的非并行超平面多类分类器INHCMC。与二值分类的非并行支持向量机(NPSVM)一样,在多类分类的原始问题中采用ε-不敏感损失函数,以提高非并行超平面多类分类器(NHCMC)的稀疏性。在一些基准数据集上的实验结果表明,我们的方法在稀疏度和分类精度方面是有效的。
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引用次数: 2
期刊
2018 IEEE 23rd International Conference on Digital Signal Processing (DSP)
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