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2018 IEEE 3rd International Conference on Image, Vision and Computing (ICIVC)最新文献

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Vision-Based Simultaneous Localization and Mapping on Lunar Rover 基于视觉的月球车同步定位与制图
Pub Date : 2018-06-01 DOI: 10.1109/ICIVC.2018.8492755
Pei An, Yanchao Liu, Wei Zhang, Z. Jin
With the development of lunar exploration technology, vision-based localization and navigation technology has become a research focus in the field of lunar rover. This paper proposes an image-based method for localization and mapping with a lunar rover. The motion of the camera represents the movement of the lunar rover. Based on the images acquired by the camera, the relative pose of the camera and 3D landmarks are obtained using the multi-view geometry and the bundle adjustment optimization methods. The prior knowledge of the lunar rover movement is not required. In addition, this paper also proposes a grid-based feature extraction method to solve the problem of uneven feature extraction and mis-matching. The algorithm in this paper has been tested in real time in a large image dataset. Finally, the error analysis of the estimated pose obtained from the experiment and the real trajectory proves the excellent performance of the algorithm.
随着月球探测技术的发展,基于视觉的定位与导航技术已成为月球车领域的研究热点。提出了一种基于图像的月球车定位与制图方法。相机的运动代表月球车的运动。基于相机获取的图像,采用多视角几何和束调整优化方法获得相机的相对姿态和三维地标。不需要事先了解月球车的运动情况。此外,本文还提出了一种基于网格的特征提取方法,解决了特征提取不均匀和不匹配的问题。本文算法已在大型图像数据集上进行了实时测试。最后,将实验得到的姿态估计与实际轨迹进行误差分析,验证了算法的优异性能。
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引用次数: 5
Visualization of Dust Evolution Simulation Model in Campus Environment 校园环境粉尘演化仿真模型可视化研究
Pub Date : 2018-06-01 DOI: 10.1109/ICIVC.2018.8492797
Hu Xiaomei, Li Minghang, Wang Chuan, Yang Xu, Wei Chenjun
In order to establish the simulation model of dust evolution and reveal the evolution process of dust, Shanghai University is selected as the simulation area, the method of Kinetic Monte Carlo is used to simulate the dust particles in the virtual campus, OpenGL and C language are used so as to realize the visualization of dust evolution simulation model. The collection data and simulation data are compared at different locations in the campus, and the results prove the validity of dust evolution simulation model. Based on the visualization results of dust evolution simulation, the relationships among wind speed, simulation time, vegetation effect and accumulation of dust particles on the ground or the motion of dust particles in the vertical surface are revealed. Visualization of dust evolution simulation model will provide a valid reference for dust control.
为了建立粉尘演化仿真模型,揭示粉尘演化过程,选择上海大学作为仿真区域,采用动力学蒙特卡罗方法对虚拟校园中的粉尘粒子进行仿真,利用OpenGL和C语言实现粉尘演化仿真模型的可视化。通过对校园内不同地点的采集数据和模拟数据的比较,验证了粉尘演化模拟模型的有效性。基于沙尘演变模拟的可视化结果,揭示了风速、模拟时间、植被效应与地面沙尘累积或垂直表面沙尘运动的关系。粉尘演化仿真模型的可视化将为粉尘控制提供有效的参考。
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引用次数: 1
The Accurate Estimation of Disparity Maps from Cross-Scale Reference-Based Light Field 基于交叉比例尺参考光场的视差图精确估计
Pub Date : 2018-06-01 DOI: 10.1109/ICIVC.2018.8492884
Mandan Zhao, X. Hao, Gaochang Wu
This paper addresses the problem of disparity map accurate estimation in the cross-scale reference-based light field, which consists several low-quality images arranged around one central high-resolution (HR) image. In the framework, we use a HR image-guidance CNN (HRIG-CNN) for estimating the disparity map in the HR level. Specifically, we first calculate the coarse disparity map using our cross-pattern strategy, which can blend the multiple disparity maps. And then, we refine this coarse disparity map using HRIG-CNN for obtaining high-quality disparity map, which contains detail information and preserve edge information. With the HR image guidance, our HRIG-CNN achieves state-of-the-art for obtaining disparity map in such hybrid light field condition. In the end, we provide both quantitative and qualitative evaluations on different methods, and demonstrate the high performance and robustness of the proposed framework compared with the state-of-the-arts algorithms.
本文研究了由多幅低质量图像围绕一幅中心高分辨率图像组成的基于交叉比例尺参考光场的视差图精确估计问题。在该框架中,我们使用HR图像引导CNN (hrg -CNN)来估计HR层的视差图。具体来说,我们首先使用我们的交叉模式策略计算粗视差图,该策略可以混合多个视差图。然后,我们使用HRIG-CNN对粗视差图进行细化,得到包含细节信息和保留边缘信息的高质量视差图。在HR图像的引导下,我们的hrg - cnn在这种混合光场条件下获得视差图达到了最先进的水平。最后,我们对不同的方法进行了定量和定性评估,并与最先进的算法相比,证明了所提出框架的高性能和鲁棒性。
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引用次数: 0
Multi-Focus Image Fusion Using Block-Wise Color-Principal Component Analysis 基于分块颜色主成分分析的多焦点图像融合
Pub Date : 2018-06-01 DOI: 10.1109/ICIVC.2018.8492725
Abubakar Siddique, Bin Xiao, Weisheng Li, Qamar Nawaz, Isma Hamid
In this work, multi-focus image fusion method has been proposed by using color-principal component analysis (C-PCA). Proposed method consists of different phases. In the first phase, both source images have been converted into three RGB color channels. In the next phase, for each channel, covariance's has been calculated for both images. Special weights have been calculated to generate intermediate images. In the next phase, Convolution has been used with Gaussian blur to make image smooth. Zero-crossing based second order-derivative has been incorporated to calculate edges. In the last phase, images have been decomposed into blocks. Salient features information by using Laplacian of Gaussian and Spatial Frequency of each block have been used to get the fused image. Experimental results show that the proposed method performs well as compare to existing methods by using quality matrices.
本文提出了一种基于颜色主成分分析(C-PCA)的多焦点图像融合方法。提出的方法由不同的阶段组成。在第一阶段,两个源图像都被转换成三个RGB颜色通道。在下一阶段,对于每个通道,计算了两个图像的协方差。计算了特殊的权重来生成中间图像。在下一阶段,卷积与高斯模糊一起使用,使图像平滑。引入了基于过零的二阶导数来计算边。在最后一个阶段,图像被分解成块。利用高斯拉普拉斯算子和各块空间频率的显著特征信息得到融合图像。实验结果表明,与现有的基于质量矩阵的方法相比,该方法具有良好的性能。
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引用次数: 10
A Novel Level Set Model Originated from Fuzzy Connectedness Guided Initial Contours 一种基于模糊连通性引导初始轮廓的水平集模型
Pub Date : 2018-06-01 DOI: 10.1109/ICIVC.2018.8492772
Yiwei Liu, Peirui Bai, Chang Li, Yue Zhao
Level set models are widely used in the image segmentation field. However, the sensitivity of the initial contours and the manual adjustment of the controlling parameters have limited the segmentation performance. To effectively solve this problem, a novel level set model utilizing both intensity and spatial information is proposed in this paper. Firstly, the fuzzy connectedness (FC) algorithm is applied to obtain the appropriate initial contours, and as a result the complexity and computation cost of building initial contours is reduced. Secondly, based on the morphological characteristics of the initial contours and the parameters of fuzzy connectedness, several equations are proposed to automatically estimate the controlling parameters of the level set evolution and avoid human intervention. Finally, the region-scalable fitting (RSF) model is adopted to evolve and obtain the final robust segmentation results. The efficiency and accuracy of the model proposed in this paper is verified by comparing the three quantitative indexes of time, Dice similarity coefficient (DSC) and peak signal to noise ratio (PSNR) with four different initialized level set models.
水平集模型在图像分割领域得到了广泛的应用。然而,初始轮廓的敏感性和控制参数的手动调整限制了分割性能。为了有效地解决这一问题,本文提出了一种同时利用强度和空间信息的水平集模型。首先,利用模糊连通性(FC)算法获得合适的初始轮廓,降低了初始轮廓的构建复杂度和计算量;其次,根据初始轮廓的形态特征和模糊连度参数,提出了自动估计水平集进化控制参数的方程,避免了人为干预;最后,采用区域可扩展拟合(RSF)模型进行演化,得到最终的鲁棒分割结果。通过对比四种不同初始化水平集模型的时间、Dice相似系数(DSC)和峰值信噪比(PSNR)三个定量指标,验证了本文模型的有效性和准确性。
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引用次数: 0
Network IDS Duplicate Alarm Reduction Using Improved SNM Algorithm 基于改进SNM算法的网络IDS重复告警减少
Pub Date : 2018-06-01 DOI: 10.1109/ICIVC.2018.8492846
Xianguang Lu, Xuehui Du, Wenjuan Wang
Intrusion detection system is an effective defense tool for finding security events. However, it will produce a large number of false positive alerts, which greatly increases the difficulty of real-time security analysis for the security managers, in actual applications. The periodic alarm produced by the wrong configuration of network devices and services, and the approximately duplicate alarm generated by different IDS for the same attack are important components of false alarm. In this paper, we improved the SNM algorithm and cleaned up the duplicate alarm in the original alarm database, which reduced the scale of the database; On the other hand, we have made statistics on the number of duplicate alarms, so that we can further find periodic alerts and remove false alarms.
入侵检测系统是发现安全事件的有效防御工具。但在实际应用中,会产生大量的误报,大大增加了安全管理人员进行实时安全分析的难度。由于网络设备和服务配置错误而产生的周期性告警,以及不同的IDS对同一攻击产生的近似重复的告警,是虚警的重要组成部分。本文对SNM算法进行了改进,对原始告警数据库中的重复告警进行了清理,减小了数据库的规模;另一方面,我们对重复报警的数量进行了统计,这样我们就可以进一步发现周期性报警并排除假报警。
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引用次数: 2
Application of Neural Network in National Economic Forecast 神经网络在国民经济预测中的应用
Pub Date : 2018-06-01 DOI: 10.1109/ICIVC.2018.8492863
Xiaofeng Yan, Jie Zhao
Prediction is a common method in data mining. In the prediction method, it can be divided into linear prediction and nonlinear prediction. The multiple linear regression method belongs to the linear regression method, and the neural network algorithm belongs to nonlinear prediction. The neural network algorithm belongs to the computational intelligence algorithm. It depends on the complexity of the system and connects the relations between the internal nodes of the neural network through the weights to process the data information. Based on multiple linear regression and neural network algorithms, this paper proposes a predictive model based on multiple linear regression and neural network, and uses this model to study national economic data. The prediction model proposed in this paper is realized by using the linear prediction result as the input neuron of the neural network. The neural network used in this paper is a radial basis function neural network, hereinafter referred to as RBF neural network.
预测是数据挖掘中的一种常用方法。在预测方法中,可分为线性预测和非线性预测。多元线性回归方法属于线性回归方法,神经网络算法属于非线性预测。神经网络算法属于计算智能算法。它根据系统的复杂程度,通过权值连接神经网络内部节点之间的关系,对数据信息进行处理。本文基于多元线性回归和神经网络算法,提出了一种基于多元线性回归和神经网络的预测模型,并利用该模型对国民经济数据进行了研究。本文提出的预测模型是利用线性预测结果作为神经网络的输入神经元来实现的。本文使用的神经网络是径向基函数神经网络,以下简称RBF神经网络。
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引用次数: 0
Grab Cut Image Segmentation Based on Image Region 基于图像区域的抓取切割图像分割
Pub Date : 2018-06-01 DOI: 10.1109/ICIVC.2018.8492818
Yubing Li, Jinbo Zhang, Peng Gao, Liangcheng Jiang, Ming Chen
Grab Cut algorithm is one of the most popular method in the field of image segmentation. It uses texture information and boundary information of image, and achieves good segmentation results with a small number of user interaction. But there are two significant drawbacks about this algorithm. Firstly, If the background is complex or the background and the object are very similar, the segmentation will not be very good. On the other hand, the relatively slow speed and Complex iterative process of the algorithm are greatly limited its application. In this paper, to develop these aspects, we proposed an improved grab cut algorithm. This algorithm is the combination of grab cut and graph-based image segmentation [1]. After the experiment, the improved algorithm is applied to more complex situation.
Grab Cut算法是图像分割领域中最流行的方法之一。它利用图像的纹理信息和边界信息,在用户交互较少的情况下获得了良好的分割效果。但是这个算法有两个明显的缺点。首先,如果背景比较复杂或者背景和目标非常相似,分割效果就不是很好。另一方面,该算法相对较慢的速度和复杂的迭代过程极大地限制了其应用。针对这些问题,本文提出了一种改进的抓取切割算法。该算法结合了抓取切割和基于图的图像分割[1]。经过实验,将改进后的算法应用于更复杂的情况。
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引用次数: 41
Design and Implementation of T-Hash Tree in Main Memory Data Base 内存数据库中t -哈希树的设计与实现
Pub Date : 2018-06-01 DOI: 10.1109/ICIVC.2018.8492865
Zhiqiang Hu, Meiqi Hu
There are some shortcomings for the cache sensitivity of the index in main memory database, so a new index structure is proposed. T -tree index is studied individually ever before, so as Hash index. Combined with the analysis of the two index structure, a new index structure called the T-Hash tree is introduced. Through analyzing the times of the T -Hash tree cache sensitive and testing the performance of the query, insert, delete operation, the results show that the T -Hash tree can effectively reduce the times of cache sensitive, and as the amount of the data is large, the query, insert, delete efficiency of the T -Hash tree is higher than the T tree.
针对当前主存数据库索引在缓存敏感性方面存在的不足,提出了一种新的索引结构。T树索引以前是单独研究的,哈希索引也是。结合对两种索引结构的分析,引入了一种新的索引结构,称为t -哈希树。通过对T -哈希树缓存敏感的次数进行分析,并对查询、插入、删除操作的性能进行测试,结果表明,T -哈希树可以有效地减少缓存敏感的次数,并且当数据量较大时,T -哈希树的查询、插入、删除效率要高于T树。
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引用次数: 0
Towards Better Soft-Tissue Segmentation Based on Gestalt Psychology 基于格式塔心理学的更好的软组织分割
Pub Date : 2018-06-01 DOI: 10.1109/ICIVC.2018.8492830
Qirong Bo, Jun Feng, P. Li, Zhaohui Lv, Jing Zhang
According to gestalt psychology theory, the human brain merges and simplifies unrelated units by some relations through eyes for subsequent cognition. We introduce a new segmentation framework based on gestalt psychology in this paper. An input image is first divided into visual patches using two gestalt principles, similarity and proximity, by a clustering method, and then the visual patches are grouped to form soft tissues by a classification step using the spatial relationship and texture features. We evaluated the proposed method using TCIA database at both sectional level and volumetric level. The experimental results demonstrated the efficiency and robustness of the presented method and indicated its promising applications in the field of medical image processing.
格式塔心理学理论认为,人脑通过眼睛将不相关的单元通过某种关系进行合并和简化,以进行后续认知。本文介绍了一种新的基于格式塔心理学的分割框架。该方法首先利用相似度和接近度两种格式塔原理,通过聚类方法将输入图像划分为视觉块,然后利用空间关系和纹理特征对视觉块进行分类,形成软组织。我们使用TCIA数据库在截面水平和体积水平上对所提出的方法进行了评估。实验结果证明了该方法的有效性和鲁棒性,在医学图像处理领域具有广阔的应用前景。
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引用次数: 1
期刊
2018 IEEE 3rd International Conference on Image, Vision and Computing (ICIVC)
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