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2017 International Conference on Virtual Reality and Visualization (ICVRV)最新文献

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Learning Deep Appearance Feature for Multi-target Tracking 学习深度外观特征用于多目标跟踪
Pub Date : 2017-10-01 DOI: 10.1109/ICVRV.2017.00011
Hexi Li, Na Jiang, Chenxin Sun, Zhong Zhou, Wei Wu
Multi-target tracking is a worthy studying issue in computer vision. For surveillance video, frequent occlusion and dense crowds complicate the issue. To resolve these difficulties, this paper proposes an effective algorithm of multi-target tracking in videos. Firstly, the faster Rcnn is proposed with the residual network to extract the objects of pedestrians in surveillance videos. The proposedment can effectively eliminate invalid target detection frames, separate peer targets and resist partial occlusions. Then, this paper put forward an accurate and efficient appearance-feature matching network model that is inspired by pedestrian re-identification theory. The deep learning feature-extraction module is composed of the stem Cnn and the Resnet blocks, therefore it can load res-50 caffemodel as pretraining model to increase the accuracy of the featureextraction. Meanwhile, the proposed network can decrease the time of train and test comparing with Resnet. Finally, the obtained multiple target tracking trajectories are further optimized by the strategy of occlusion distinction, deduplication and merging. The experiment results of the 2D MOT 2015 benchmark, KITTI dataset indicate that this proposed algorithm outperforms alternative multiple objects trackers in terms of multiple indicators.
多目标跟踪是计算机视觉中一个值得研究的问题。对于监控视频来说,频繁的遮挡和密集的人群使问题复杂化。为了解决这些问题,本文提出了一种有效的视频多目标跟踪算法。首先,利用残差网络提出了一种更快的Rcnn来提取监控视频中的行人目标。该方法可以有效地消除无效目标检测帧,分离对等目标,抵抗部分遮挡。然后,受行人再识别理论的启发,提出了一种准确高效的外观特征匹配网络模型。深度学习特征提取模块由stem Cnn和Resnet块组成,因此可以加载res-50 caffmodel作为预训练模型,以提高特征提取的准确性。同时,与Resnet相比,该网络减少了训练和测试的时间。最后,通过遮挡区分、重复数据删除和合并策略对得到的多目标跟踪轨迹进行进一步优化。2D MOT 2015基准KITTI数据集的实验结果表明,该算法在多指标方面优于备选多目标跟踪器。
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引用次数: 1
A Reliable, Precise and Efficient 3D Printer Process Controlling Algorithm 一种可靠、精确、高效的3D打印机过程控制算法
Pub Date : 2017-10-01 DOI: 10.1109/ICVRV.2017.00043
Zhiyong Tu, Jinyuan Jia, Feng-ting Yan
Practical 3D printing application always encounters motor motion confliction and warping of ugly product. This paper presents the proper ways to solve these problems. Firstly, to be assured precise motion controlling, safety and 3D printing process stabilization, we present motion mutex approach with Karnaugh map for real time monitoring motor motion status, and its algorithm of motion mutex, based on this way to make motor motion coordination working to accomplish precise process controlling. Secondly, to obtain reliable and precise product with smooth surface and to reduce the time of fabrication product, we propose comprehensive path planning to achieve this purpose, which integrated contour offset scanning and short linear scanning. Finally, with these methods in the practice we have produced the beautiful statuette of warrior.
在实际的3D打印应用中,经常会遇到运动冲突和难看的产品翘曲。本文提出了解决这些问题的适当途径。首先,为了保证精确的运动控制、安全性和3D打印过程的稳定性,我们提出了用Karnaugh图实时监测运动状态的运动互斥方法及其运动互斥算法,在此基础上使运动协调工作实现精确的过程控制。其次,为了获得可靠、精确、表面光滑的产品,并减少产品的加工时间,我们提出了综合路径规划,将轮廓偏移扫描和短线性扫描相结合来实现这一目标。最后,在实践中,我们用这些方法制作了美丽的战士雕像。
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引用次数: 0
Low-Light Image Deblurring Based on Simple Lens System 基于简单透镜系统的微光图像去模糊
Pub Date : 2017-10-01 DOI: 10.1109/ICVRV.2017.00047
Dazhi Zhan, Xiangrong Zeng, Weili Li, Yu Liu, Z. Xiong
A method for image quality enhancement of simple lens image under low-illumination condition is presented in this paper. We first introduce an accurate camera-scene alignment framework that generates exactly matched and tone-consistent image pairs to estimate blur kernel. We then use the cross-channel matrix obtained in the tone curve calibration to restore the details of the blurred image. Finally, the clear image is restored by non-blind deconvolution and compared with other methods to prove the advantages of our method.
提出了一种在低照度条件下提高简单透镜图像质量的方法。我们首先引入了一个精确的相机场景对齐框架,生成精确匹配和色调一致的图像对来估计模糊核。然后,我们使用色调曲线校准中获得的跨通道矩阵来恢复模糊图像的细节。最后,通过非盲反卷积恢复清晰图像,并与其他方法进行比较,证明了本文方法的优越性。
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引用次数: 0
Dynamic Crowd Aggregation Simulation Using SIR Model Based Emotion Contagion 基于SIR模型的情绪传染动态人群聚集模拟
Pub Date : 2017-10-01 DOI: 10.1109/ICVRV.2017.00080
Xiang Nan, Zhou Zehong, Pan Zhigeng
Generating emotion contagion results were very important in crowd simulation field. However, as the individuals often moving dynamically, then computing the contagion process becomes a challenge. In this paper, we focused on the emotion contagion effects on dynamic aggregation process of the virtual pedestrian. Firstly, according to the social force theory, we constructed individuals' moving velocities based on their expectations. Secondly, made an adjacent test to generate the nearer neighbors as emotional contagions usually occurred between neighbors. And then we treated the emotional contagions between individuals and their neighbors as the information spreading process so that we calculated the influences on their moving directions through the emotional information spreading model SIR (Susceptible Infective Removal). Social force for simulating moving individuals and SIR model were adopted by our method to simulate the emotional contagion of the crowd. Experimental results showed that the SIR model can effectively improve the fidelity of emotional interaction process and crowd aggregation.
情绪传染结果的生成是人群模拟研究的重要内容。然而,由于个体经常动态移动,因此计算传染过程成为一项挑战。本文主要研究虚拟行人动态聚合过程中的情绪传染效应。首先,根据社会力量理论,基于个体的期望构建个体的移动速度。其次,由于情绪传染通常发生在邻居之间,因此通过相邻测试来产生较近的邻居。然后将个体与邻居之间的情绪传染作为信息传播过程,通过情绪信息传播模型SIR(易感感染去除)计算个体与邻居之间的情绪传染对其移动方向的影响。我们的方法采用模拟移动个体的社会力和SIR模型来模拟人群的情绪传染。实验结果表明,SIR模型可以有效地提高情感交互过程和人群聚集的保真度。
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引用次数: 5
A Novel Fusion Algorithm for Copy-Move Forgery Detection 一种新的复制-移动伪造检测融合算法
Pub Date : 2017-10-01 DOI: 10.1109/ICVRV.2017.00048
Yanfen Gan, Jim-Lee Chung, Janson Young
An algorithm that fused block-based algorithm and keypoints-based algorithm is proposed for the copy-move forgery detection. Firstly, the popular keypoint-based algorithms, such as SURF, the nearest-neighbor (2NN) test, adaptive Euclidean distance and Random sample consensus (RANSAC) are applied to extract, match and filter out most of mismatched feature points and get the candidate inlier matches. The RANSAC are addressed to classify the candidate inlier matches. Then, Radial Harmonic Fourier Moments is proposed to extract invariances of the candidate inlier matches in circle blocks. Finally, the host image segment into texture patches. A series of the experiments showed that the proposed fusion algorithm can achieve superior performances than the moment invariant algorithms under various geometric transformations.
提出了一种融合了基于块算法和基于关键点算法的复制移动伪造检测算法。首先,应用SURF、最近邻(2NN)测试、自适应欧氏距离和随机样本一致性(RANSAC)等常用的基于关键点的算法,提取、匹配并过滤掉大部分不匹配的特征点,得到候选的内层匹配;对RANSAC进行寻址,对候选的内嵌匹配进行分类。然后,提出径向调和傅里叶矩来提取圆块中候选内层匹配的不变性。最后,将主机图像分割成纹理小块。一系列实验表明,在各种几何变换下,所提出的融合算法比矩不变算法具有更好的性能。
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引用次数: 0
Wireless Ad Hoc Network Simulation Based on Virtual Reality Technology 基于虚拟现实技术的无线自组网仿真
Pub Date : 2017-10-01 DOI: 10.1109/ICVRV.2017.00122
Yuanyuan Li, Xun Luo, Edwin Lobo, Andrea Pilco, Yi Chen
This paper proposes wireless ad hoc network simulation based on virtual reality technology. Functional components provided by a game engine such as scene management, animation, rendering, scripting, and physics engine can provide suitable interfaces for ad hoc network simulation. Using these components, simulation of ad hoc networks can be easily implemented. The ad-hoc network simulation technology can be carried out in virtual reality by game engine, which is illustrated by advantages of the game engine and the simulation process in this paper. The workability and accuracy of the simulation scheme are demonstrated, with the metrics of comparing the experimental data with other simulation techniques commonly used.
本文提出了基于虚拟现实技术的无线自组网仿真。游戏引擎提供的功能组件,如场景管理、动画、渲染、脚本和物理引擎,可以为自组织网络模拟提供合适的接口。使用这些组件,可以很容易地实现自组织网络的仿真。游戏引擎可以在虚拟现实中实现自组织网络仿真技术,本文通过游戏引擎的优点和仿真过程说明了这一点。通过与其它常用仿真技术的实验数据对比,验证了该仿真方案的可行性和准确性。
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引用次数: 1
Scissor-Based 3D Deployable Contours 基于剪刀的3D可展开轮廓
Pub Date : 2017-10-01 DOI: 10.1109/ICVRV.2017.00022
Xuejin Chen, Haoming Jiang, Tingting Xuan, Lihan Huang, Ligang Liu
Because of its property of saving space, scissor structure, which can transform from a compact state to an expanded state, is widely applied in various fields. In this paper, we solve a challenging problem: designing scissor structures that can expand from a 3D contour to another 3D contour. Given two different 3D shapes specified by users, a non-uniform concentration is required, which makes the problem non-trivial. We propose a three-step algorithm to construct a 3D scissor structure. Firstly we generate scissor segments that are composed of a sequence of planar scissor units based on the shape correspondence. Secondly, we compute the scissor unit parameters of each segment in a suggestive manner. Finally, we introduce ball-shaped joints with parameterized guide slit to realize the deployment in 3D space. The results demonstrate that our algorithm is able to generate scissor structures for a wide range of 3D contours.
由于具有节省空间的特性,剪刀结构可以从紧凑状态转变为展开状态,因此被广泛应用于各个领域。在本文中,我们解决了一个具有挑战性的问题:设计剪刀结构,可以从一个三维轮廓扩展到另一个三维轮廓。给定用户指定的两种不同的3D形状,需要不均匀的浓度,这使得问题变得不简单。我们提出了一个三步算法来构造一个三维剪刀结构。首先,我们根据形状对应关系生成由一系列平面剪单元组成的剪段。其次,我们以一种暗示性的方式计算每段的剪刀单元参数。最后,引入带参数化导缝的球形接头,实现在三维空间的展开。结果表明,我们的算法能够生成广泛的三维轮廓的剪刀结构。
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引用次数: 0
Deep Feature Screening Method by ICT Cascaded with IPSO for Image Recognition 基于ICT与IPSO级联的图像识别深度特征筛选方法
Pub Date : 2017-10-01 DOI: 10.1109/ICVRV.2017.00113
Liqiang Pei, Jinyuan Shen, Runjie Liu
Reducing the dimensionality of datasets is considered an important topic addressed in classification problems. In order to reduce the dimension of the features, a new cascaded method is proposed. Firstly, an improved clustering thought (ICT) is used to screen features initially. Secondly an improved particle swarm optimization (IPSO) in which mutation is adopted into the PSO iteration rule is used to filter out the subsets of features whose value of fitness is larger than the certain threshold. Then the support of each feature can be calculated by these selected sunsets. At last, the best feature subset can be screened according to the sorted support. In order to verify the feasibility of this method, 1588 tobacco leaf images belonging to 41 grades have been experimented. And the experiment results show that the proposed deep feature screening method can effectively improve the image recognition rate and recognition speed.
降低数据集的维数被认为是分类问题中的一个重要课题。为了降低特征的维数,提出了一种新的级联方法。首先,采用改进的聚类思想(ICT)对特征进行初步筛选。其次,采用改进的粒子群算法(IPSO),在粒子群迭代规则中引入突变,过滤出适应度值大于某一阈值的特征子集;然后可以通过这些选择的日落来计算每个特征的支持度。最后根据排序支持度筛选出最佳特征子集。为了验证该方法的可行性,对41个等级的1588张烟叶图像进行了实验。实验结果表明,所提出的深度特征筛选方法能够有效提高图像识别率和识别速度。
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引用次数: 0
A Novel Intelligent Thyroid Nodule Diagnosis System over Ultrasound Images Based on Deep Learning 基于深度学习的超声图像智能甲状腺结节诊断系统
Pub Date : 2017-10-01 DOI: 10.1109/ICVRV.2017.00038
Zhike Yi, A. Hao, Wenfeng Song, Hongyi Li, Bowen Li
At present, thyroid cancer has become a serious global public health problem, and ultrasound is the most important imaging method to assess thyroid nodules. But ultrasound diagnostic results of thyroid disease are susceptible to doctors' experiences, levels, status and other factors. So it needs intelligent diagnostic system to assist the doctors to make more objective qualitative and quantitative analyses, to reduce the impact of subjective experience on the diagnostic results. In this paper, a deep learning algorithm for thyroid nodule risk assessment based on ultrasound images is proposed, and an intelligent diagnostic system of thyroid ultrasound image based on this algorithm is constructed. As an aided diagnostic tool, the system is easy to use and can significantly improve the accuracy for determination of thyroid cancer. To verify the effectiveness of the system, we collaborate with the Peking Union Medical College Hospital to test this system.
目前,甲状腺癌已成为严重的全球性公共卫生问题,超声是评估甲状腺结节最重要的影像学手段。但甲状腺疾病的超声诊断结果易受医生经验、水平、身份等因素的影响。因此需要智能诊断系统辅助医生进行更加客观的定性和定量分析,减少主观经验对诊断结果的影响。本文提出了一种基于超声图像的甲状腺结节风险评估深度学习算法,并构建了基于该算法的甲状腺超声图像智能诊断系统。该系统作为辅助诊断工具,使用方便,可显著提高甲状腺癌诊断的准确性。为了验证该系统的有效性,我们与北京协和医院合作对该系统进行了测试。
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引用次数: 3
Research and Development of Virtual Try-On System Based on Mobile Platform 基于移动平台的虚拟试车系统的研究与开发
Pub Date : 2017-10-01 DOI: 10.1109/ICVRV.2017.00098
Hongqiang Zhu, Jing Tong, Luosheng Zhang, X. Zou
A mobile-based virtual try-on system is proposed to deal with the problems of high cost and conflicts between computational complexity and simulation effects. In this paper, several modules are included, such as automatic 3D face reconstruction based on a single image, auto-skinning and realtime local simulation of cloth. According to the experiments, the virtual try-on system introduced in this paper is able to achieve better fitting effects with lower constructing and computing costs, in which case good experience of mobile-based virtual try-on system is provided.
针对移动设备虚拟试戴成本高、计算复杂度与仿真效果冲突的问题,提出了一种基于移动设备的虚拟试戴系统。本文主要包括基于单幅图像的三维人脸自动重建、自动蒙皮和布料的实时局部仿真等模块。实验结果表明,本文所设计的虚拟试穿系统能够以较低的构建成本和计算成本达到较好的试穿效果,为基于移动设备的虚拟试穿系统提供了良好的体验。
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引用次数: 1
期刊
2017 International Conference on Virtual Reality and Visualization (ICVRV)
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