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CSS Based Trademark Retrieval System 基于CSS的商标检索系统
Dayanand Jamkhandikar, V. D. Mytri
World is emerging with trade practices in the global scenario. Trademarks today play a very critical and important role. Trademark registration and its evaluation for distinctiveness is becoming very tedious job for registration offices. Millions of trademarks had already registered and millions of applications are filed for trademarks registration. There are different techniques and approaches currently in use for distinctness check for trademarks. The proposed method is used for retrieval of trademarks and it uses the maxima of curvature zero crossing contours of Curvature Scale Space image (CSS) as a feature vector to represent the shapes of object boundary contours. The matching algorithm, which compares two sets of maxima and assigns matching value as a measure of similarity. The major advantage with CSS technique is that CSS representation of the image is robust with respect to noise, scale, and orientation changes of the image. Each retrieval takes a reasonable amount of computation time. The top most retrieved images by the system agree with that obtained by human perception.
世界正在出现全球情景下的贸易实践。商标在今天起着非常关键和重要的作用。商标注册及其显著性评价已成为商标局的一项繁琐工作。数以百万计的商标已经注册,数以百万计的商标注册申请被提交。目前商标显著性审查有不同的技术和方法。该方法用于商标检索,并以曲率尺度空间图像(CSS)的曲率零交叉轮廓的最大值作为特征向量来表示物体边界轮廓的形状。匹配算法,它比较两组最大值并分配匹配值作为相似性的度量。CSS技术的主要优点是,图像的CSS表示对于图像的噪声、比例和方向变化具有鲁棒性。每次检索需要合理的计算时间。系统检索到的最高图像与人类感知得到的图像一致。
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引用次数: 3
Analysis of QR Decomposition for MIMO Systems MIMO系统QR分解分析
Abha Chauhan, R. Mehra
Sphere Decoder (SD) is widely being used in Multiple Input Multiple Output (MIMO) systems to reduce the complexity of the system while obtaining near Maximum Likelihood (ML) performance. The complexity of the system increases with the increase in antenna configuration or the constellation size. Some pre-processing is a fundamental prerequisite in iterative detectors to reduce the system complexity by focusing the received signal energy to reduce the effect of inter-symbol interference. The QR Decomposition (QRD) of communication channel matrices in the pre-processor stage is an important issue to ensure good performance of the subsequent steps of decoding thus a QRD) is commonly used in many MIMO detection algorithms. A sorted QR decomposition (SQRD) is an advanced algorithm that improves the performance of MIMO detection. In this paper the efficiency of QRD and SQRD methods in terms of computational complexity, error rate performance and the FPGA resources utilized is presented. The main contribution of this work is a comparison of hardware implementations of the QRD and SQRD system. QRD for 4x4 MIMO system is implemented on various target FPGA platforms to compare their area utilization.
球面解码器(SD)被广泛应用于多输入多输出(MIMO)系统中,以降低系统的复杂性,同时获得接近最大似然(ML)的性能。系统的复杂性随着天线配置或星座规模的增加而增加。通过对接收信号的能量进行聚焦,降低码间干扰的影响,从而降低系统的复杂度。在预处理阶段对通信信道矩阵进行QR分解(QRD)是保证后续解码性能的一个重要问题,因此在许多MIMO检测算法中通常使用QRD。排序QR分解(SQRD)是一种改进MIMO检测性能的先进算法。本文介绍了QRD和SQRD方法在计算复杂度、错误率性能和FPGA资源利用方面的效率。这项工作的主要贡献是QRD和SQRD系统的硬件实现的比较。4x4 MIMO系统的QRD在各种目标FPGA平台上实现,以比较它们的面积利用率。
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引用次数: 4
Vehicular Adhoc Networks Handovers with Metaheuristic Algorithms 基于元启发式算法的车辆自组网切换
P. Wararkar, S. Dorle
VEHICULAR ad hoc networks (VANETs) are the self-configuring networks where the nodes are vehicles (equipped with on-board computers), elements of roadside infrastructure, sensors, and pedestrian personal devices. In the current state of the art in this field there is a need of studies on real outdoor experiments to validate the new VANETs optimizing protocols and applications. Thus exchanging up-to-date information among vehicles is the most salient feature of a VANET. In order to do so, the packets have to travel through the network from one node to the others & thus give rise to concept of inter VANET data handovers & VDTP (Vehicular data transfer Protocol). In this work, we have addressed the utility of metaheuristic algorithms (PSO, GA) for inter VANET sensor data handovers in order to study the performance analysis to maximize the throughput & reliability improvement in real VANET.
车辆自组织网络(VANETs)是自配置网络,其中节点是车辆(配备车载计算机)、路边基础设施元素、传感器和行人个人设备。在该领域目前的技术水平下,需要对实际室外实验进行研究,以验证新的VANETs优化协议和应用。因此,在车辆之间交换最新信息是VANET最显著的特点。为了做到这一点,数据包必须通过网络从一个节点传输到另一个节点,因此产生了VANET间数据移交和VDTP(车载数据传输协议)的概念。在这项工作中,我们解决了元启发式算法(PSO, GA)在VANET传感器数据切换中的效用,以便研究性能分析,以最大限度地提高实际VANET的吞吐量和可靠性。
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引用次数: 9
Enhancement of Image Retrieval by Using Colour, Texture and Shape Features 利用颜色、纹理和形状特征增强图像检索
A. Ganar, C. Gode, S. Jambhulkar
Content based image retrieval technique is done by three primitive methods namely through colour, shape and texture. This paper provides specified path to use these primitive features to retrieve the desired image. The technique by which we obtain the required image is CBIR. In CBIR first the HSV colour space is quantified to obtain the colour histogram and texture features. Using these components a feature matrix is formed. Then this matrix is mapped with the characteristic of global colour histogram and local colour histogram, which are analysed and compared. For the cooccurrence matrix between the local image and the images in the database to retrieve the image. For extracting shape feature gradient method is used here. Based on this principle, CBIR system uses colour, texture and shape fused features to retrieve desired image from the large database and hence provides more efficiency or enhancement in image retrieval than the single feature retrieval system which means better image retrieval results.
基于内容的图像检索技术是通过颜色、形状和纹理三种基本方法来实现的。本文给出了使用这些原语特征检索所需图像的具体路径。我们获得所需图像的技术是CBIR。在CBIR中,首先对HSV颜色空间进行量化,得到颜色直方图和纹理特征;使用这些组件形成一个特征矩阵。然后将该矩阵映射为具有全局颜色直方图和局部颜色直方图的特征,并对其进行分析比较。对于本地图像与数据库中的图像之间的协同矩阵进行检索。对于形状特征的提取,本文采用梯度法。基于这一原理,CBIR系统利用颜色、纹理和形状融合的特征从大型数据库中检索所需的图像,从而比单一特征检索系统在图像检索方面提供了更高的效率或增强,意味着更好的图像检索结果。
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引用次数: 30
A Novel MRI Brain Edge Detection Using PSOFCM Segmentation and Canny Algorithm 一种基于PSOFCM分割和Canny算法的MRI脑边缘检测方法
Romesh Laishram, Wahengbam Kanan Kumar, Anshuman Gupta, Khairnar Vinayak Prakash
Introduction of many Image processing and segmentation tools has undoubtedly presented the procedures of mapping the human brain in a more efficient way. This paper attempts to pull out a new and a practical approach for enhancing the underlying delicate architectures of the human brain images captured by a Magnetic Resonance Imaging(MRI) machine in a much better way. Edge detection is a fundamental tool for the basic study of human brain particularly in the areas of feature detection and feature extraction. The edge detection methodology presented in this paper relies on two basic stages: Firstly, the original MRI image is subjected to image segmentation which is done using Particle Swarm optimization incorporating Fuzzy C Means Clustering (PSOFCM) technique. And secondly, canny edge detection algorithm is used for detecting the fine edges. After implementation it was found that this technique yields better edge detected image of the human brain as compared to other edge detection methods as discussed below.
许多图像处理和分割工具的引入,无疑为更有效地绘制人类大脑的过程提供了途径。本文试图提出一种新的实用方法,以更好的方式增强磁共振成像(MRI)机器捕获的人脑图像的底层微妙结构。边缘检测是人类大脑基础研究尤其是特征检测和特征提取领域的基本工具。本文提出的边缘检测方法依赖于两个基本阶段:首先,对原始MRI图像进行图像分割,并使用结合模糊C均值聚类(PSOFCM)技术的粒子群算法进行图像分割;其次,采用精细边缘检测算法进行精细边缘检测。实施后发现,与下面讨论的其他边缘检测方法相比,这种技术产生了更好的人类大脑边缘检测图像。
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引用次数: 30
Rainfall Estimation over Roof-Top Using Land-Cover Classification of Google Earth Images 利用谷歌地球图像的土地覆盖分类估算屋顶上的降雨量
M. Aher, S. Pradhan, Y. Dandawate
'Water' is one of the most valuable resources available to the mankind. In the world, due to exponential growth in population and industrialization we are witnessing scarcity of water. In addition, water table levels are falling rapidly than ever. Hence proper management and appropriate utilization of water has become the need of an hour. Hence this problem is required to be tackled with the novel approach. The idea behind this proposal is to design and development of rain water harvesting system based on rainfall runoff estimation over rooftop. The Google Earth image is combination of remote sensed satellite images and aerial photographs. The information on land use and land cover is obtained using satellites Google Earth images which are simple, economical and precise approach. In the proposed work an efficient classification technique is proposed in which K-means clustering algorithm and textural parameters based on GLCM are used for classification of the Google Earth images into land cover and land use sector. In Land use and land cover classification whole image gets classified into different region such as Grass area, Water area, Roof-top area, Soil area etc. Then area under the different regions is computed. Area measurement is required for computing rainfall runoff using estimation model. Experimental result shows that the computation of the areas of roof tops and road surfaces are nearly accurate and rainfall runoff calculation can be estimated very near to actual.
“水”是人类最宝贵的资源之一。在世界上,由于人口的指数增长和工业化,我们正在目睹水资源的短缺。此外,地下水位正以前所未有的速度下降。因此,妥善管理和合理利用水资源已成为当务之急。因此,这个问题需要用新的方法来解决。这个提案背后的想法是设计和开发基于屋顶降雨径流估算的雨水收集系统。谷歌地球图像是遥感卫星图像和航空照片的组合。利用卫星谷歌地球图像获取土地利用和土地覆盖信息,这是一种简单、经济、精确的方法。本文提出了一种有效的分类技术,利用K-means聚类算法和基于GLCM的纹理参数将Google Earth图像分类为土地覆盖和土地利用两类。在土地利用和土地覆盖分类中,将整幅图像划分为不同的区域,如草地区域、水域区域、屋顶区域、土壤区域等。然后计算不同区域下的面积。利用估算模型计算降雨径流量需要面积测量。实验结果表明,该方法计算的屋顶和路面面积基本准确,估算的降雨径流量与实际非常接近。
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引用次数: 8
DE Based Q-Learning Algorithm to Improve Speed of Convergence in Large Search Space Applications 基于DE的q -学习算法在大搜索空间应用中提高收敛速度
Z. Rahaman, J. Sil
The main drawback of reinforcement learning is that it learns nothing from an episode until it is over. So the learning procedure is very slow in case of large space applications. Differential Evolution (DE) algorithm is a population-based evolutionary optimization algorithm able to learn the search space in iterative way. In the paper, improvement of Q-learning method has been proposed using DE algorithm where guided randomness has been incorporated in the search space resulting fast convergence. Markov Decision Process (MDP), a mathematical framework has been used to model the problem in order to learn the large search space efficiently. The proposed algorithm exhibits better result in terms of speed and performance compare to basic Q-learning algorithm.
强化学习的主要缺点是,在事件结束之前,它什么也学不到。因此,在大空间应用中,学习过程非常缓慢。差分进化算法是一种基于种群的进化优化算法,能够以迭代的方式学习搜索空间。本文采用DE算法对Q-learning方法进行改进,在搜索空间中引入了引导随机性,收敛速度快。为了有效地学习大搜索空间,采用马尔可夫决策过程(MDP)数学框架对该问题进行建模。与基本的Q-learning算法相比,该算法在速度和性能上都取得了更好的结果。
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引用次数: 1
A Novel Parallel Multiplier for 2's Complement Numbers Using Booth's Recoding Algorithm 基于Booth重编码算法的2补数并行乘法器
Chandrashekhar T. Kukade, R. Deshmukh, R. Patrikar
A novel architecture of parallel multiplier using modified Booth's recoding unit for 2's complement numbers is presented in this paper. The basic Booth's recoding algorithm requires add and shift operations for multiplication, these steps makes this multiplier sequential. Parallel multiplication can be achieved using Booth's recoding algorithm and simple Brown's array of adders, but it requires more number of adders to get correct output. Other parallel multiplication techniques are available using Booth's recoding algorithm. However, these array multiplier also requires add, shift and extra control unit. The proposed design has two major features; first is modified Booth's recoding unit which produces partial products second is modified array of adders. Modified array of adder block designed, which uses less number of adders than conventional Booth's recoding multiplier. Multiplexers are basic unit used for Booth's recoding unit and synthesis has been carried out using 180 nm technology. The proposed design uses less power than conventional Booth's recoding 2's complement parallel multiplier.
本文提出了一种利用改进的Booth对2的补码数进行编码的新型并行乘法器结构。基本的布斯重编码算法需要对乘法进行加法和移位操作,这些步骤使这个乘法器是顺序的。使用Booth的重新编码算法和简单的Brown加法器阵列可以实现并行乘法,但是需要更多的加法器才能得到正确的输出。其他并行乘法技术可以使用布斯的重新编码算法。然而,这些阵列乘法器还需要加、移和额外的控制单元。提出的设计有两个主要特点;第一是改进的产生部分产品的布斯重编码单元,第二是改进的加法器阵列。改进的加法器块阵列设计,比传统的布斯重编码乘法器使用更少的加法器。多路复用器是布斯编码单元的基本单元,合成采用180nm技术。所提出的设计比传统的布斯重新编码2的互补并行乘法器使用更少的功率。
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引用次数: 6
Energy Efficient Wireless Sensor Network 节能无线传感器网络
R. Khedikar, A. Kapur, M. Chawhan
Recently the application of wireless sensor network (WSN) is very popular for monitoring the remote or hostile environments. Network lifetime is the critical characteristic in wireless sensor network. In large scale reconnaissance system the lifetime of wireless sensor network (WSNs) system is the time period that all targets can be covered. Target coverage problem is one of the issues to increase the lifetime of wireless sensor network. This problem can be solved by scheduling the sensors activity by keeping minimum number of nodes active at particular time. The sensors from the active sets are monitoring all targets and liable to transmit the data to the base station and the remaining nodes are in sleep mode. In this paper we propose Genetic Algorithm in which we keep minimum number of nodes active by forming set cover by divide all the deployed sensors in to mutually elite subsets of sensors or set cover such that each set of can cover all targets . After finding the set cover they may work by turns means at one time only one set will active and other will sleep mode by designing heuristics that efficiently compute the set covers hence lifetime of WSNs can be prolong by finding more sensor set. The simulation results presented to verify the approach the maximum number of sensor cover can be found by conversion to the Cover Set problem, which has been proved to be NP-complete.
近年来,无线传感器网络(WSN)在远程或恶劣环境监测方面的应用非常广泛。网络寿命是无线传感器网络的重要特性。在大规模侦察系统中,无线传感器网络(WSNs)系统的生命周期是指其能够覆盖所有目标的时间。目标覆盖问题是提高无线传感器网络寿命的问题之一。这个问题可以通过在特定时间保持最小数量的节点活动来调度传感器活动来解决。来自活动组的传感器监控所有目标,并有可能将数据传输到基站,其余节点处于休眠模式。本文提出了一种遗传算法,该算法通过将所有部署的传感器划分为相互精英的传感器子集或集合覆盖,使每个集合覆盖所有目标,从而形成集合覆盖,从而保持最小节点数量的活动。在找到集合覆盖后,通过设计有效计算集合覆盖的启发式算法,它们可以轮流工作,即在同一时间只有一个集合处于活动状态,而另一个则处于休眠状态,从而通过寻找更多的传感器集来延长wsn的生命周期。仿真结果验证了该方法的有效性,将该方法转化为覆盖集问题,可以找到传感器覆盖的最大数量,并证明该方法是np完全的。
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引用次数: 7
Multipath Reliable Range Node Selection Distance Vector Routing for VANET: Design Approach VANET多路径可靠范围节点选择距离矢量路由:设计方法
H. Sharma, Pankaj Agrawal, R. Kshirsagar
Vehicular Ad hoc Network (VANET) is the network among vehicles. The efficient routing protocol is required to route the data from source node to destination node in VANET. In existing protocols, Ad hoc On-Demand Multipath Distance Vector (AOMDV) the number of hops increases with data traffic and Secure Ring Broadcast (SRB) routing protocol the routes established are very stable but cannot adapt to engaged nodes circumstances. A new concept protocol, Multipath Reliable Range Node Selection Distance Vector (MRRNSDV) routing is proposed which will be multipath protocol and number of hops will remain same even at high traffic conditions. This protocol is basically proposed to reduce the number of hops, find multiple paths to destination node and avoid channel congestion in more efficient way to increase the performance under higher traffic condition unlike Ad hoc on demand distance vector (AODV) protocol.
车辆自组织网络(VANET)是车辆之间的网络。在VANET中,需要有效的路由协议将数据从源节点路由到目的节点。在现有的路由协议中,AOMDV (Ad hoc demand Multipath Distance Vector)跳数随数据流量的增加而增加,SRB (Secure Ring Broadcast)路由协议建立的路由非常稳定,但不能适应节点参与的情况。提出了一种多路径可靠范围节点选择距离矢量路由(MRRNSDV)的新概念协议,该协议是一种多路径协议,即使在高流量条件下也能保持跳数不变。该协议与Ad hoc按需距离矢量(AODV)协议不同,主要是为了减少跳数,寻找到目的节点的多条路径,以更有效的方式避免信道拥塞,以提高在高流量条件下的性能。
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引用次数: 18
期刊
2014 International Conference on Electronic Systems, Signal Processing and Computing Technologies
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