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The analysis of lane detection algorithms using histogram shapes and Hough transform

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International Journal of Intelligent Computing and Cybernetics 2015年第3期8卷 262-278页

作者： Mahasak ketcham Thittaporn Ganokratanaa Department of Information Technology Management King Mongkut’s University of TechnologyNorth BangkokThailand Department of Media Technology King Mongkut’s University of Technology ThonburiBangkokThailand

Purpose–The purpose of this paper is to develop a lane detection analysis algorithm by Hough transform and histogram shapes,which can effectively detect the lane markers in various lane road conditions,in driving system for ***/methodology/approach–Step 1:receiving image:the developed system is able to acquire images from video *** 2:splitting image:the system analyzes the splitting process of video *** 3:cropping image:specifying the area of interest using crop *** 4:image enhancement:the system conducts the frame to convert rGB color image into grayscale *** 5:converting grayscale image to binary *** 6:segmenting and removing objects:using the opening morphological *** 7:defining the analyzed area within the image using the Hough *** 8:computing Houghline transform:the system operates the defined segment to analyze the Houghline ***–This paper presents the useful solution for lane detection by analyzing histogram shapes and Hough transform algorithms through digital image *** method has tested on video sequences filmed by using a webcam camera to record the road as a video file in a form of *** experimental results show the combination of two algorithms to compare the similarities and differences between histogram and Hough transform algorithm for better lane detection *** performance of the Hough transform is better than the histogram ***/value–This paper proposed two algorithms by comparing the similarities and differences between histogram shapes and Hough transform *** concept of this paper is to analyze between algorithms,provide a process of lane detection and search for the algorithm that has the better lane detection results.

关键词： Image processing Decision making Intelligent transportation Lane detection Driving system Lane departure Histogram shape Hough transform Algorithm Webcam camera Video file

Notes from the first workshop of the IGCP 543 Low temperature thermochronology： applications and interlaboratory calibration

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Episodes 2008年第3期31卷 356-357页

作者： Zattin, Massimiliano Balestrieri, Maria Laura Hasehe, Noriko ketcham, richard Seward, Diane Sobel, Ed Spiegel, Carnelia Univ Bologna Dipartimento Sci Terr & Geol Ambientali I-40127 Bologna Italy CNr Ist Geosci & Georisorse Sezione Firenze I-50121 Florence Italy Kanazawa Univ Inst Nat & Environm Technol Kanazawa Ishikawa 9201192 Japan Univ Texas Austin Jackson Sch Geosci Austin TX 78712 USA ETH Zent Inst Geol CH-8092 Zurich Switzerland Univ Potsdam Inst Geowissensch D-14476 Haus Germany Univ Bremen Fachbereich 5 D-28334 Bremen Germany

research and Thinking of Smart Home Technology

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Research and Thinking of Smart Home Technology

Simple DSP Implementation of Maximum Power Pointer Tracking and Inverter Control for Solar Energy Applications

The 2nd International Conference on Latest Computational Technologies(ICLCT’2013);The 2nd International Conference on Biotechnology,Nanotechnology and its applications(ICBNA’2013);The 2nd International Conference on Mechanical,Electronics and Mechatronics Engineering(ICMEME’2013);The 2nd International Conference on Humanities,Economics and Geography(ICHEG’2013);The 2nd International Conference on Chemical,Ecology and Environmental Sciences(ICEES’2013);The 2nd International Conference on Medical,Biological and Pharmaceutical Sciences(ICMBPS’2013)

作者： Meensika Sripan Xuanxia Lin Ponchan Petchlorlean Mahasak ketcham Department of Media Technology King Mongkut’s University of Technology Thonburi

Smart home is emerging technology growing continuously now. It integrates of many new technologies through home networking for improving human’s quality of living, so there have many projects researching in diverse technologies to apply to the smart home system. Accordingly, this paper reviews various topics on smart home technologies from surveying for smart home research projects. The topics is based on the definition of smart home and the details of smart home elements including smart home networks that can be classified into two main types, which are wiring system and wireless system, smart home controllers that use for managing system, the appliances or the smart devices and the challenges of smart home. This paper also offers many interesting projects summarily, so it can be ideas for whoever want to learn this technology.

关键词： smart home smart home network smart home appliances

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Journal of Power and Energy Engineering 2016年第9期4卷 61-76页

作者： Woonki Na Thomas Carley Luke ketcham Brendan Zimmer Pengyuan Chen Department of Electrical and Computer Engineering California State University Fresno CA USA Caterpillar Inc. Peoria IL USA robert Bosh Inc. Detroit MI USA

In this paper, a simple Digital Signal Processor (DSP) based Maximum Power Pointer Tracking (MPPT) control and Inverter Control is presented for solar energy applications, especially photovoltaic and wind energy systems. The proposed MPPT controlled boost converter is able to reduce the inrush current and the overshoot of the output voltage of the system. Details of the proposed Maltab-Simulink based MPPT and Inverter Control are shown and implemented using a DSP. The proposed system is analyzed and simulated for verification. To validate the system, a 100 W prototype test-bed is built and tested. The results show that the proposed system can be applicable for solar energy applications.

关键词： DSP MPPT Inverter Solar Energy

脑震荡史运动员采用保守步态策略的证据（英文）

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Journal of Sport and Health Science 2016年第4期5卷 417-423页

作者： Thomas A.Buckley Srikant Vallabhajosula Jessie r.Oldham Barry A.Munkasy Kelsey M.Evans David A.Krazeise Caroline J.ketcham Eric E.Hall Department of Kinesiology and Applied Physiology University of Delaware Department of Physical Therapy Education Elon University Department of Health and Kinesiology Georgia Southern University Department of Intercollegiate Athletics Stetson University Department of Exercise Science Elon University

背景:3次或3次以上的脑震荡史常与许多短期或长期神经病理相关。姿势控制障碍是目前已知的脑震荡导致的严重后果之一,而关于多重脑震荡对步态影响的研究较少。本研究旨在评价有脑震荡史的大学生运动员的步态特征。方法:将63名受试者根... 详细信息

背景:3次或3次以上的脑震荡史常与许多短期或长期神经病理相关。姿势控制障碍是目前已知的脑震荡导致的严重后果之一,而关于多重脑震荡对步态影响的研究较少。本研究旨在评价有脑震荡史的大学生运动员的步态特征。方法:将63名受试者根据脑震荡史分为3组:≥3次脑震荡史、1-2次脑震荡史、无脑震荡史。每个受试者在4.9 m的检测步道上完成10次步态实验。因变量包括步态特征(步速、步长、步宽、双脚支撑时间、步态周期百分比)及变异系数(步长、时间、步宽)。先用多元方差分析比较步态特征,进而跟进用单因素方差分析,并根据情况用图基事后检验法。用单因素方差分析和图基事后检验法比较变异系数。结果:分组的主要影响包括步速、步长、步宽、双脚支撑时间。总体而言,无脑震荡史组表现出健康年轻人典型的步态参数,并明显优于其他两组。其步长变异系数更佳,但步行时间或步宽的变异系数与其他组无显著差异。结论:这一发现为有脑震荡史的个体在步态测试时表现出细微姿势控制障碍提供了证据,可作为以后研究神经缺陷的早期指标。变异性测量的差异有限,这与前期静态姿势的研究结果一致,表明个体会限制其运动系统以减少变异性。总之,本研究证明有脑震荡史的个体应采取保守的步态策略。

关键词：平衡脑损伤步态表现运动轻微创伤姿势控制姿势稳定性变异性

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铝合金在航空母舰上的暴露试验

轻合金加工技术 1981年第6期 54-59+68+70页

作者： S·J·ketcham 顾孔君

航空铝合金2124、7075和7178在航空母舰甲板上的腐蚀比在沿海地区或工业气氛中受到的腐蚀严重得多。本文是正在进行中的确定铝合金在航空母舰环境中腐蚀性能的研究结果之一(参看表3的试验结果)。为了证明加速试验室条件下研究的数据(这... 详细信息

航空铝合金2124、7075和7178在航空母舰甲板上的腐蚀比在沿海地区或工业气氛中受到的腐蚀严重得多。本文是正在进行中的确定铝合金在航空母舰环境中腐蚀性能的研究结果之一(参看表3的试验结果)。为了证明加速试验室条件下研究的数据(这种试验是比现行使用试验技术更好的一种模拟环境试验),把一些材料暴露在航空母舰甲板上进行试验。本试验将为海军军

关键词：核动力航空母舰暴露试验应力腐蚀兆帕铝合金轻有色金属合金

Late Mesozoic and Cenozoic thermotectonic evolution along a transect from the north China craton through the Qinling orogen into the Yangtze craton,central China

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Late Mesozoic and Cenozoic thermotectonic evolution along a ...

利用同时光纤分布式声传感和垂直检波器的面波频谱分析

中国科学院地质与地球物理研究所2006学术年会

作者： Asaf raza Kyoungwon Min Barry P.Kohn Peter W.reiners richard A.ketcham Andrew J.W.Gleadow School of Earth Sciences University of MelbourneMelbourneAustralia Department of Geology and Geophysics Yale UniversityNew HavenConnecticutUSA Department of Geological Sciences University of Texas at AustinAustinTexasUSA

Cretaceous and Cenozoic reactivation of the Triassic Qinling-Dabie orogen between the north China and Yangtze cratons resulted from the combined effects of Pacific subduction-back-arc extension in east China and collisions in west *** report new apatite fission track and apatite and zircon(U-Th)/He data from east Qinling along a >400-km-long N-S transect from Huashan through the Qinling orogen to *** ages show a general pattern of younging *** major cooling phases are defined by modeling the multiple thermochronologic data *** first phase occurred locally in the North and South Qinling during the late Triassic to early Jurassic,following heating associated with the Triassic Yangtze subduction and exhumation of the Wudang metamorphic core complex on the cratonal edge.A second phase represents regional exhumation between 100 and 60 Ma,coeval with rifting marked by the Late Cretaceous-Eocene(K2-E) red bed deposition in eastern China and possibly indicating a link with Pacific subduction-back-arc extension in eastern China;however,it may also have been superimposed by eastward tectonic escape resulting from the Lhasa-West Burma-Qiangtang-Indochina *** third cooling phase was initiated at 5 Ma exclusively in the north Qinling and in the footwall of the graben-bounding normal fault of the Weihe graben in the Lesser *** suggest the third phase was related to reactivation of the Qinling fault system as a result of eastward tectonic escape imposed by the India-Asia collision at 0 Ma.

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世界地震译丛 2019年第6期50卷 573-586页

作者： r.D.Costley G.Galan-Comas C.K.Kirkendall J.E.Simms K.K.Hathaway M.W.Parker S.A.ketcham E.W.Smith W.r.Folks T.W.Milburn H.M.Wadman 李帛珊(译) 吕春来(校) 不详新疆维吾尔自治区地震局中国地震局地球物理研究所

利用光纤分布式声传感对安装在地面的垂直检波器的响应进行了对比实验。分布式声传感由安装在光纤上的光学询问器组成。光纤是光缆的一部分,安装在0.3~0.76m深的沿海松散沙地环境中。用两个系统同时记录冲击锤产生的地震信号,并直接进... 详细信息

利用光纤分布式声传感对安装在地面的垂直检波器的响应进行了对比实验。分布式声传感由安装在光纤上的光学询问器组成。光纤是光缆的一部分,安装在0.3~0.76m深的沿海松散沙地环境中。用两个系统同时记录冲击锤产生的地震信号,并直接进行比较。在震源和光纤电缆之间进行两种不同排布方式,即垂射和端射的实验。利用面波频谱分析法,对在两种排布方式用两种传感器系统记录的地震信号进行相同处理。所得结果说明了分布式声传感用于近地表地震测量的适用性和局限性。

关键词：光纤分布式频谱分析法声传感检波器面波垂直传感器系统对比实验

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