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Calibration of Double-Plane-Mirror Catadioptric Camera Based on Coaxial Parallel Circles 基于同轴平行圆的双平面镜反射相机标定
Pub Date : 2022-08-25 DOI: 10.1155/2022/7145400
Yue Zhao, Yuyang Chen, Liping Yang
A catadioptric camera with a double-mirror system, composed of a pinhole camera and two planar mirrors, can capture multiple catadioptric views of an object. The catadioptric point sets (CPSs) formed by the contour points on the object lie on circles, all of which are coaxial parallel. Based on the property of the polar line of the infinity point with respect to a circle, the infinity points in orthogonal directions can be obtained using any two CPSs, and a pole and polar pair with respect to the image of the absolute conic (IAC) can be obtained through inference of the Laguerre theorem. Thus, the camera intrinsic parameters can be solved. Furthermore, as the five points needed to fit the image of a circle are not easy to obtain accurately, only sets in which five points can be located can be obtained, whereas the points on the line of intersection between the two plane mirrors and the ground plane can easily be obtained accurately. An optimization method based on the analysis of neighboring point sets to compare the intersection points with an image of the center of multiple circle images fitted using the point sets is proposed. Bundle adjustment is then applied to further optimize the camera intrinsic parameters. The feasibility and validity of the proposed calibration methods and their optimization were confirmed through simulation and experiments. Two primary innovations were obtained from the results of this study: (1) by applying coaxial parallel circles to the double-plane-mirror catadioptric camera model, a variety of calibration methods were derived, and (2) we found that the overall model could be optimized by analyzing the features of the neighboring point set and bundle adjustment.
一种由针孔相机和两个平面反射镜组成的双反射镜系统的反射相机,可以捕捉一个物体的多个反射视图。由物体上的轮廓点组成的反射点集(cps)位于圆上,所有的圆都是同轴平行的。根据无穷点相对于圆的极线的性质,可以用任意两个CPSs得到正交方向上的无穷点,并通过拉格尔定理的推论得到绝对二次曲线像的极极对。从而求解出相机的固有参数。此外,由于拟合圆图像所需的五个点不易精确获取,因此只能获得五个点所在的集合,而两个平面镜与地平面相交线上的点则容易精确获取。提出了一种基于相邻点集分析的交点优化方法,将交点与用点集拟合的多圆图像的圆心图像进行比较。然后应用束调整来进一步优化相机的内在参数。通过仿真和实验验证了所提出的标定方法及其优化的可行性和有效性。本研究的主要创新之处有:(1)将同轴平行圆应用于双平面镜反射相机模型,推导出多种标定方法;(2)通过分析相邻点集的特征和束平差,发现整体模型可以进行优化。
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引用次数: 0
Design and Application of Collaborative Experiment Management Platform for Innovation and Entrepreneurship Education Based on an Intelligent Sensor Network 基于智能传感器网络的创新创业教育协同实验管理平台设计与应用
Pub Date : 2022-08-25 DOI: 10.1155/2022/9542280
Yongqiang Sun
Innovation and entrepreneurship is the soul of entrepreneurship, and realizing the integration of innovation and entrepreneurship education and collaborative experiment platform in colleges and universities is an important way to promote the development of entrepreneurship and facilitate higher quality employment. In this paper, the authors propose the 3D-IVF intelligent sensor overlay algorithm wisdom laboratory system structure and application mode through in-depth investigation of collaborative laboratory, build the macroenvironment and construction demand of collaborative experiment management platform of innovation and entrepreneurship education, comprehensively analyze the current situation, problems, and effectiveness of its integration of innovation and entrepreneurship education and professional education. In addition, we explore the operation mechanism of its organizational system, curriculum system, management system, and platform construction in the practice of integrating innovation and entrepreneurship education with professional education. The average coverage rate of the 3D-IVF-based 3D coverage algorithm is 92.15%, and the deployment time is 2.5857 s; the average coverage rate is improved by 0.76%, and the deployment time is reduced by 0.1712 s. Design FIR filter using MATLAB and Hilbert transform filter, generate HDL code, and implement it on FPGA. Use the designed low-pass and band-pass filters to filter the 100 KHz square wave signal sampled by the ADC. When the number of iterations of the algorithm reaches 30, the coverage rates of the four-node deployment strategies will stabilize, i.e., the forces between the nodes of the 3D-VF-based 3D coverage algorithm of this paper. The equilibrium state is reached. We use resources and real-time experimental data sharing to realize collaborative design among team members, further optimize the curriculum structure of innovation and entrepreneurship education, adopt diversified forms of curriculum implementation, and implement a diversified curriculum evaluation system, etc.
创新创业是创业的灵魂,在高校实现创新创业教育与协同实验平台的融合,是促进创业发展、促进更高质量就业的重要途径。本文通过对协同实验室的深入调研,提出3D-IVF智能传感器叠加算法智慧实验室体系结构及应用模式,构建创新创业教育协同实验管理平台的宏观环境及建设需求,全面分析其现状、问题;以及其创新创业教育与专业教育相结合的有效性。并在创新创业教育与专业教育相结合的实践中,探索其组织体系、课程体系、管理体系、平台建设的运行机制。基于3D- ivf的3D覆盖算法平均覆盖率为92.15%,部署时间为2.5857 s;平均覆盖率提高0.76%,部署时间减少0.1712 s。利用MATLAB和Hilbert变换滤波器设计FIR滤波器,生成HDL代码,并在FPGA上实现。使用设计的低通和带通滤波器对ADC采样的100khz方波信号进行滤波。当算法迭代次数达到30次时,四节点部署策略的覆盖率趋于稳定,即本文基于3D- vf的三维覆盖算法节点间的作用力趋于稳定。达到平衡态。利用资源和实时实验数据共享,实现团队成员之间的协同设计,进一步优化创新创业教育课程结构,采用多元化的课程实施形式,实施多元化的课程评价体系等。
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引用次数: 3
Prediction and Analysis of College Sports Test Scores Based on Computational Intelligence 基于计算智能的高校体育考试成绩预测与分析
Pub Date : 2022-08-24 DOI: 10.1155/2022/4070030
Pengtao Cui
Nowadays, colleges and universities are paying more and more attention to the physical condition of students. Many schools set up physical education courses to exercise students and improve their physical quality. They also conduct physical examinations every semester to test students’ conditions. In order to ensure more accurate sports results, this paper uses optimization of the neural group particle group model method to forecast the physical culture test scores of the investigated students. In addition, to guarantee accuracy the particle swarm optimization neural network model method, we compare the GXD method and the LM method with our method. It has the advantage of high precision, optimal prediction effect, strong versatility, higher recall rate, stronger antinoise performance, and wider application range. The article compares the neural network model method for particle swarm optimization with the GXD way and the LM way to ensure precision the neural network model method for particle swarm optimization.
如今,高校越来越重视学生的身体状况。许多学校开设体育课程来锻炼学生,提高他们的身体素质。他们还每学期进行体检,以测试学生的身体状况。为了保证更准确的运动结果,本文采用优化的神经群粒子群模型方法对被调查学生的体育考试成绩进行预测。此外,为了保证粒子群优化神经网络模型方法的准确性,我们将GXD方法和LM方法与我们的方法进行了比较。它具有精度高、预测效果最佳、通用性强、召回率高、抗噪性能强、适用范围广等优点。为了保证粒子群优化的精度,本文将神经网络模型方法与GXD方法和LM方法进行了比较。
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引用次数: 0
Next Generation IoT and Blockchain Integration 下一代物联网和区块链集成
Pub Date : 2022-08-24 DOI: 10.1155/2022/9077348
Sarvesh Tanwar, Neelam Gupta, C. Iwendi, K. Kumar, M. Alenezi
The Internet of Things (IoT) refers to the interconnection of smart devices to collect data and make intelligent decisions. However, a lack of intrinsic security measures makes next generation IoT more vulnerable to privacy and security threats. With its “security by design,” Blockchain (BC) can help in addressing major security requirements in IoT. Blockchain is an ever-growing list of records that are linked and protected using cryptographic methods. It offers its users the flexibility to conduct transactions with lower costs and faster speeds. Blockchain ledgers are also decentralized and a ledger is maintained at each node in the network. Blockchain’s security and adaptability help in making even entire systems on it a much easily task with the benefit of decentralization. BC capabilities like immutability, transparency, auditability, data encryption, and operational resilience can help solve most architectural shortcomings of IoT. In the vision of the Internet of Things, traditional devices are becoming smarter and more autonomous. This vision is becoming reality as technology advances but there are still challenges to be resolved. This is especially true in a security domain like data trust, and with the expected evolution of the IoT in the coming years, it is important to ensure that this great source of data arrives. This paper began with an overview of blockchain and IoT, as well as explore the IoT blockchain application challenges. This article also focuses to review the most relevant tasks to analyse how IoT blockchain can improve and examine current research concerns and developments in the use of blockchain-related techniques and technologies in the context of IoT security in depth. One of the best parts of working or learning about blockchain and its application is the curiosity about how it can impact the things that we have been accustomed to without trying to improve and make things more efficient and productive.
物联网(IoT)是指智能设备之间的互联,以收集数据并做出智能决策。然而,由于缺乏固有的安全措施,下一代物联网更容易受到隐私和安全威胁。凭借其“设计的安全性”,区块链(BC)可以帮助解决物联网中的主要安全需求。区块链是一个不断增长的记录列表,使用加密方法进行链接和保护。它为用户提供了以更低成本和更快速度进行交易的灵活性。区块链分类账也是去中心化的,在网络中的每个节点都维护一个分类账。区块链的安全性和适应性有助于使整个系统在去中心化的好处下更容易完成任务。BC功能,如不变性、透明性、可审计性、数据加密和操作弹性,可以帮助解决物联网的大多数架构缺陷。在物联网的愿景中,传统设备正变得更加智能和自主。随着技术的进步,这一愿景正在成为现实,但仍有挑战需要解决。在数据信任等安全领域尤其如此,随着未来几年物联网的预期发展,确保这一重要数据源的到来非常重要。本文首先概述了区块链和物联网,并探讨了物联网区块链应用面临的挑战。本文还侧重于回顾最相关的任务,以分析物联网区块链如何改进,并深入研究在物联网安全背景下使用区块链相关技术和技术的当前研究问题和发展。工作或学习区块链及其应用的最佳部分之一是好奇它如何影响我们已经习惯的事情,而不试图改进和提高效率和生产力。
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引用次数: 14
Design Method of Art Innovation Space Based on Computer Image Data Acquisition 基于计算机图像数据采集的艺术创新空间设计方法
Pub Date : 2022-08-24 DOI: 10.1155/2022/4634772
Lei Wu, Baoliang Xu
With the development of science and technology, it brings more possibilities for artistic space design method innovation. The development of computer image data acquisition technology has realized the continuous extension of artistic space design and creation. Based on the computer image data collection technology, this paper realizes the innovative design of real and virtual environment in the exhibition of art space, centering on the interactive integration of the three elements of “human-objects-space.” Through the experimental design, from the space, color data collection, display space moving line, and space function design scheme were the four aspects of exploration and analysis. Compared with traditional design methods, the following conclusions are drawn: first, in spatial data acquisition, the average error of area measurement is less than 3.63%, and the measurement accuracy can reach more than 91%. Second, the average accuracy of color detection of various materials in space can be maintained at 90%. Third, the spatial movement line designed in this paper is simple and clear, with appropriate length, so that visitors can achieve the best visiting effect with the smallest distance. Fourth, the overall design scheme is reasonable, the space is transparent and bright, and the tour route is clear. It can complete the functional zoning design of the art exhibition space in a short time, saving a lot of manpower and time.
随着科技的发展,为艺术空间设计方法的创新带来了更多的可能性。计算机图像数据采集技术的发展,实现了艺术空间设计创作的不断延伸。本文基于计算机图像数据采集技术,围绕“人-物-空间”三要素的交互融合,实现了艺术空间展示中真实与虚拟环境的创新设计。通过实验设计,从空间色彩数据采集、展示空间动线、以及空间功能设计方案四个方面进行了探索和分析。通过与传统设计方法的比较,得出以下结论:首先,在空间数据采集中,面积测量的平均误差小于3.63%,测量精度可达到91%以上。其次,空间中各种材料的颜色检测平均精度可保持在90%。第三,本文设计的空间运动线简洁清晰,长度适宜,使游客能以最小的距离达到最佳的参观效果。四是整体设计方案合理,空间通透明亮,游览路线清晰。它可以在短时间内完成艺术展览空间的功能分区设计,节省大量的人力和时间。
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引用次数: 0
Application Research of Wireless Sensor Network Based on Computer BIM Technology and ZigBee in Interior Art Design 基于计算机BIM技术和ZigBee的无线传感器网络在室内艺术设计中的应用研究
Pub Date : 2022-08-24 DOI: 10.1155/2022/2933085
Dong Hu, Xintian Hao, Chao Liu
With the rapid development of computer technology and automation technology, modern interior art design has attracted more and more attention. This paper chooses BIM technology and ZigBee technology, which have the advantages of low cost, low power consumption, low complexity, etc., and can be used to establish the communication protocol of indoor art design and home wireless network, so as to achieve residential comfort and wireless data security transmission and convenient, real-time monitoring. This paper starts with many environmental parameters that are closely related to human comfort, such as temperature and humidity, light, and air cleanliness, and conducts an investigation on the comfort of intelligent houses and the appreciation of modern indoor art; this paper discusses the security of BIM and ZigBee and the algorithm of AES starting from the specific implementation process; according to the internal characteristics and password requirements of the family, a smart home safety net is constructed and encrypted, so as to ensure the safe transmission of family information; complete the modern artistic design of the home controller. The hardware and software were constructed, and a web server was constructed on Linux, which was invoked using the CGI interface, thereby connecting the web server to the terminal device that was comfortably controlled. The test proves that the control scheme can work normally in the laboratory network, which has great guiding significance for practical work.
随着计算机技术和自动化技术的飞速发展,现代室内艺术设计越来越受到人们的重视。本文选择具有低成本、低功耗、低复杂度等优点的BIM技术和ZigBee技术,可用于建立室内艺术设计与家庭无线网络的通信协议,从而实现住宅舒适、无线数据安全传输和便捷、实时监控。本文从温湿度、光线、空气洁净度等与人体舒适度密切相关的诸多环境参数入手,对智能住宅的舒适度和现代室内艺术的鉴赏进行调查;本文从具体实现过程出发,讨论了BIM和ZigBee的安全性以及AES的算法;根据家庭内部特点和密码要求,构建智能家居安全网并进行加密,确保家庭信息的安全传输;完成家居控制器的现代艺术设计。构建了硬件和软件,并在Linux上构建了web服务器,通过CGI接口调用web服务器,从而将web服务器与易于控制的终端设备连接起来。试验证明,该控制方案在实验室网络中能够正常工作,对实际工作具有重要的指导意义。
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引用次数: 1
Data Collection and Analysis in Sports Practice Teaching Based on Internet of Things Technology 基于物联网技术的体育实践教学数据收集与分析
Pub Date : 2022-08-24 DOI: 10.1155/2022/2741517
Li Yang
Since entering the new century, people’s living standards have been continuously improved, living conditions have been continuously improved, which is the embodiment of the improvement of the country’s comprehensive strength, the increase in national strength has made the development of sports faster and faster, and the annual output value of sports is also increasing year by year. However, there are still many places that do not pay attention to practical content; in view of these problems, we use the Internet technology to collect and analyze the data of sports practice teaching; in this chapter paper, we use the 2SPLM observation matrix method and CS-MDGA algorithm, so that the collected sports practice teaching data is more quick and convenient to be analyzed. This paper also uses a large number of chart data to confirm the correctness and accuracy of their views, making the paper more reliable. The study shows that the teaching of physical education in China is increasing year by year, indicating that the teaching of physical practice in China is developing in a better direction. The mathematical modeling in the abstract section of the article uses computational methods such as constrained nonnegative matrix decomposition and constrained nonnegative matrix decomposition model optimization algorithm that integrates external information for research.
进入新世纪以来,人民的生活水平不断提高,生活条件不断改善,这是国家综合实力提高的体现,国力的增强使得体育事业的发展越来越快,体育的年产值也在逐年增加。但是,仍然有很多地方不注重实用内容;针对这些问题,运用网络技术对体育实践教学数据进行收集和分析;在本章中,我们采用2SPLM观察矩阵法和CS-MDGA算法,使收集到的体育实践教学数据更加快速方便的进行分析。本文还使用了大量的图表数据来证实他们观点的正确性和准确性,使论文更加可靠。研究表明,中国的体育教学逐年增加,表明中国的体育实践教学正朝着更好的方向发展。本文摘要部分的数学建模采用了约束非负矩阵分解和集成外部信息的约束非负矩阵分解模型优化算法等计算方法进行研究。
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引用次数: 0
Combined EEMD with a Novel Flexible Wavelet Threshold Function for Weighing Signal Denoising Approach 结合EEMD和柔性小波阈值函数的加权信号去噪方法
Pub Date : 2022-08-24 DOI: 10.1155/2022/5314532
Dan Liu, Xiang Liao, Shuo Ouyang, Chaoshun Li
This paper proposes a method of combining ensemble empirical mode decomposition (EEMD) with a novel flexible wavelet threshold function to reduce the random error in the weighing result that caused by the nonstationary and nonlinear noise in quality characteristic parameter measurement equipment. The original signal is first processed by EEMD, and then, all intrinsic mode functions (IMFs) are processed by a novel flexible threshold function proposed by this paper. Finally, the denoised signal is obtained by adding reconstructed IMFs and residual. Through theoretical analysis, the proposed threshold function can retain more useful information and have continuity at the segmentation point. Moreover, the addition of adjustable parameters makes it more adaptable. Its advantages are verified by comparing the denoised results with other threshold functions in the simulation model. In weighing experiment, the validity of the novel flexible threshold function in weighing signal denoising is verified, and the effectiveness of the proposed method is also quantitatively confirmed by comparing the random errors of the original signal and the denoised signal.
本文提出了一种将集成经验模态分解(EEMD)与一种新颖的柔性小波阈值函数相结合的方法,以减小质量特性参数测量设备中非平稳和非线性噪声对称重结果造成的随机误差。首先对原始信号进行EEMD处理,然后对所有的本征模态函数(IMFs)进行柔性阈值函数处理。最后,将重构后的imf和残差相加,得到去噪后的信号。通过理论分析,所提出的阈值函数能够保留更多的有用信息,并且在分割点处具有连续性。此外,可调参数的加入使其更具适应性。通过与仿真模型中其他阈值函数去噪结果的比较,验证了该方法的优越性。在称重实验中,验证了柔性阈值函数对称重信号去噪的有效性,并通过对比原信号和去噪后信号的随机误差,定量地验证了所提方法的有效性。
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引用次数: 0
Sensors, Signal, and Artificial Intelligent Processing 传感器、信号和人工智能处理
Pub Date : 2022-08-23 DOI: 10.1155/2022/9793204
Bin Gao, W. Woo, Guiyun Tian
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引用次数: 1
Intelligent Library Service and Management Based on IoT Assistance and Text Recommendation 基于物联网辅助和文本推荐的智能图书馆服务与管理
Pub Date : 2022-08-23 DOI: 10.1155/2022/3660135
Kailiang Xu
The services provided in the smart library stage include not only simple applications such as network creation and computing cloud, but also all-round immersive services through user behavior perception, scene combination, and space-time breakthrough. At the same time, there are also some problems in the existing intelligent library service and management research. This paper puts forward a solution for the intelligent library service and IoT-based management and takes into account the suggestions of atlas users. It is expected that it will provide new ideas and methods for the research in this field. The experimental results show that our smart library framework has higher library management efficiency, improves readers’ borrowing rate, and reduces the cost of library daily maintenance.
智慧图书馆阶段提供的服务不仅包括网络创建、计算云等简单的应用,还包括通过用户行为感知、场景组合、时空突破等全方位沉浸式服务。同时,现有的智能化图书馆服务与管理研究也存在一些问题。本文结合地图集用户的建议,提出了图书馆智能化服务和物联网管理的解决方案。期望为该领域的研究提供新的思路和方法。实验结果表明,我们的智能图书馆框架具有更高的图书馆管理效率,提高了读者借阅率,降低了图书馆日常维护成本。
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引用次数: 3
期刊
J. Sensors
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