Дисертації з теми "Trajectory of motion"
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Mhawesh, Mustafa Azzam Naji. "Trajectory planning using higher order motion specifications." Thesis, California State University, Fullerton, 2017. http://pqdtopen.proquest.com/#viewpdf?dispub=10243067.
Повний текст джерелаThis thesis builds on a recently developed Failure Recovery Synthesis (FRS) technique for robotic manipulators, which is mounted on a movable platform to achieve an originally specified task after an arm joint failure. The FRS locks in place the failed arm joint and determines a new position for the base of the arm and a new grasping location for the end-effector.
This work aims towards improving the trajectory planning technique of the FRS in order to generate optimal reaching motions in case of an arm joint failure. Aiming towards improving the robotic trajectory planning technique in the FRS, the work adopts previous results from experimental observations on human elbow constrained reaching movements. The assumption that the end-effector of an elbow locked anthropomorphic robotic manipulator is in contact with a specific surface during the entire movement allows us to describe the contact conditions by using higher order kinematic constraints such as velocities, accelerations, and jerks. By adopting contact specifications at initial and final task locations, kinematic synthesis and path planning techniques enable us to generate an entire end-effector trajectory connecting the two locations.
The proposed method was validated by comparing its outcome to an actual human elbow-constrained reaching motion profile. The results show a smooth trajectory that closely follows the human hand path.
Kinney, Justin P. "Jerk limited reference trajectory generation for motion control." Thesis, Georgia Institute of Technology, 1999. http://hdl.handle.net/1853/16024.
Повний текст джерелаBurke, Sean E. "Reactive trajectory adjustment for motion execution using Chekhov." Thesis, Massachusetts Institute of Technology, 2014. http://hdl.handle.net/1721.1/91450.
Повний текст джерела5
Cataloged from PDF version of thesis.
Includes bibliographical references (page 97).
Robots are becoming more and more prominent in the world of manufacturing for assembling products. Currently most of these robots, such as the ones used in automobile manufacturing have specific pre-programmed tasks and motions, and no sense of their surrounding environment. In many of today's applications, this method will not be sufficient, as many real world environments are unstructured and could cause disturbances to the robots requiring the motion and task plans to be modified. If a robot has a task to complete, a planner, such as Bidirectional RRT [5], will generate a motion plan to complete the task. If that motion plan becomes infeasible, because the goal has changed, or an obstacle has moved into the robot's path, the robot will need to make an adjustment. One method is to generate a new plan. This can be quite time-consuming, especially since the time is not proportional to the size of the change making re-planning excessive for small adjustments. The problem we would like to solve is adjusting to minor disturbances much faster than re-planning. Re-planning can often take a few seconds, where we would like to make adjusted plans in less than a second. In this thesis, we present a method for solving this problem. We use an incremental adjustment approach that can make minor adjustments in response to collisions or goal changes where the time taken to make adjustments is proportional to the extent of the changes made. To make the adjustments to the plan, we have developed a quadratic program that will make near-optimal adjustments to each robot joint pose in a robot's motion plan based on the goal region and a reaction vector. The goal region is the region the robot manipulator needs to be in to accomplish its task. The reaction vector is a vector that specifies the direction the robot would need to move in order to remove itself from a collision if there is a collision. Along with this quadratic program, we give a method for computing these reaction vectors. These two pieces are the major components of our algorithm and the key innovations made in this thesis. The algorithm allows the robot to make minor adjustments to its plan in an unstructured environment in about a quarter of a second. The adjustments are near optimal, in that they only deviate slightly from the original plan, and are made much faster than traditional planning algorithms. The overall goal is to build a complete robust execution system, and the reactive trajectory adjustment algorithm presented in this thesis is an important piece of the overall system.
by Sean E. Burke.
M. Eng.
ADORF, JULIUS. "Motion Segmentation of RGB-D Videosvia Trajectory Clustering." Thesis, KTH, Skolan för datavetenskap och kommunikation (CSC), 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-153943.
Повний текст джерелаDai, Wei. "FPCA Based Human-like Trajectory Generating." Scholar Commons, 2013. http://scholarcommons.usf.edu/etd/4811.
Повний текст джерелаBasset, Gareth. "Virtual Motion Camouflage Based Nonlinear Constrained Optimal Trajectory Design Method." Doctoral diss., University of Central Florida, 2012. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/5116.
Повний текст джерелаID: 031001346; System requirements: World Wide Web browser and PDF reader.; Mode of access: World Wide Web.; Adviser: .; Title from PDF title page (viewed April 18, 2013).; Thesis (Ph.D.)--University of Central Florida, 2012.; Includes bibliographical references (p. 110-116).
Ph.D.
Doctorate
Mechanical and Aerospace Engineering
Engineering and Computer Science
Mechanical Engineering
Westerlund, Andreas. "Sensor-Based Trajectory Planning in Dynamic Environments." Thesis, Linköpings universitet, Reglerteknik, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-150040.
Повний текст джерелаSoto, E. R. "(Un)veiling bodies : a trajectory of Chilean post-dictatorship documentary." Thesis, University of Warwick, 2014. http://wrap.warwick.ac.uk/62042/.
Повний текст джерелаCakir, Rasit. "Fractional Brownian motion and dynamic approach to complexity." Thesis, University of North Texas, 2007. https://digital.library.unt.edu/ark:/67531/metadc3992/.
Повний текст джерелаBhat, Aditya. "Locomotion Trajectory Generation For Legged Robots." Digital WPI, 2017. https://digitalcommons.wpi.edu/etd-theses/1167.
Повний текст джерелаHuat, Tan Hwee. "Discrete trajectory planners for robotic arms." Title page, table of contents and summary only, 1988. http://web4.library.adelaide.edu.au/theses/09PH/09pht1611.pdf.
Повний текст джерелаLiu, Shuo. "Object Trajectory Estimation Using Optical Flow." DigitalCommons@USU, 2009. https://digitalcommons.usu.edu/etd/462.
Повний текст джерелаMohammed, Shehab. "Kinematic Motion Planning for a 7-AxisRobotic Arm (LWA70 by Schunk)." Thesis, Umeå universitet, Institutionen för tillämpad fysik och elektronik, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-129376.
Повний текст джерелаCallh, Sebastian. "Trajectory-based Arrival Time Prediction using Gaussian Processes : A motion pattern modeling approach." Thesis, Linköpings universitet, Institutionen för datavetenskap, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-158623.
Повний текст джерелаKim, Sung Hyun. "Multi-layer approach to motion planning in obstacle rich environment." [College Station, Tex. : Texas A&M University, 2008. http://hdl.handle.net/1969.1/ETD-TAMU-2621.
Повний текст джерелаLewis, John Henry. "Lung tumor tracking, trajectory reconstruction, and motion artifact removal using rotational cone-beam projections." Diss., [La Jolla] : University of California, San Diego, 2010. http://wwwlib.umi.com/cr/ucsd/fullcit?p3407863.
Повний текст джерелаTitle from first page of PDF file (viewed June 23, 2010). Available via ProQuest Digital Dissertations. Vita. Includes bibliographical references (leaves 129-150).
Wada, Nancy Shima. "A trajectory illusion and its relation to induced motion and smooth pursuit eye movements." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2001. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp05/MQ64023.pdf.
Повний текст джерелаGuan, Tianyi [Verfasser], and J. [Akademischer Betreuer] Beyerer. "Predictive energy-efficient motion trajectory optimization of electric vehicles / Tianyi Guan ; Betreuer: J. Beyerer." Karlsruhe : KIT Scientific Publishing, 2019. http://d-nb.info/1202111963/34.
Повний текст джерелаXiang, Gong. "Motion Dynamics of Dropped Cylindrical Objects." ScholarWorks@UNO, 2017. http://scholarworks.uno.edu/td/2340.
Повний текст джерелаSpera, Manuel <1978>. "Motion control and real-time systems: an approach to trajectory rebuilding in non-deterministic networks." Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2008. http://amsdottorato.unibo.it/637/.
Повний текст джерелаClaussmann, Laurene. "Motion planning for autonomous highway driving : a unified architecture for decision-maker and trajectory generator." Thesis, Université Paris-Saclay (ComUE), 2019. http://www.theses.fr/2019SACLE014/document.
Повний текст джерелаThis thesis work is part of the development of a self-driving car in highway environments. More precisely, it aims to propose a unified architecture of trajectory planner and decision-maker taking into account the limitations of the environment and the available data within the current development of sensors technologies (distance limitations, uncertainties).On the one hand, the method generates sigmoid trajectories in a continuous spatiotemporal representation of the evolution space, which is reduced beforehand by modeling collision-free intervals in nominal conditions of driving. The sigmoid parameters are subsequently optimized with a simulated annealing approach that uses the decision-maker algorithm as the evaluation function for the generated trajectory. It thus makes it possible to elude both the discretization and position/speed decoupling problems. On the other hand, the aggregation of fuzzy logic and belief theory allows decision making on heterogeneous criteria and uncertain data. The proposed framework also handles personalization of the vehicle's behavior, depending on the passengers' risk perception and an aggressive or conservative driving style.The presented approach was finally evaluated and validated in a simulation environment, and then in a test vehicle. The planning block was integrated into the existing vehicle's architecture, interfaced with the localization, obstacles' perception and control blocks
Ambike, Satyajit S. "Characteristics of Spatial Human Arm Motion and the Kinematic Trajectory Tracking of Similar Serial Chains." The Ohio State University, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=osu1325169225.
Повний текст джерелаBehere, Sagar. "A Generic Framework for Robot Motion Planning and Control." Thesis, KTH, Centrum för Autonoma System, CAS, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-104806.
Повний текст джерелаGu, Tianyu. "Improved Trajectory Planning for On-Road Self-Driving Vehicles Via Combined Graph Search, Optimization & Topology Analysis." Research Showcase @ CMU, 2017. http://repository.cmu.edu/dissertations/794.
Повний текст джерелаGotardo, Paulo Fabiano Urnau. "Modeling Smooth Time-Trajectories for Camera and Deformable Shape in Structure from Motion with Occlusion." The Ohio State University, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=osu1280941484.
Повний текст джерелаSeimetz, Christina N. "Biomechanical Investigation of Head Kinematics and Skull Stiffness." Thesis, Virginia Tech, 2011. http://hdl.handle.net/10919/76900.
Повний текст джерелаMaster of Science
Reza, Hasnain. "Detection, location, and trajectory tracing of moving objects in the real world two-dimensional images." Ohio : Ohio University, 1988. http://www.ohiolink.edu/etd/view.cgi?ohiou1182869492.
Повний текст джерелаKilicaslan, Sinan. "Unconstrained Motion And Constrained Force And Motion Control Of Robots With Flexible Links." Phd thesis, METU, 2005. http://etd.lib.metu.edu.tr/upload/3/12606011/index.pdf.
Повний текст джерелаZendegan, Saeid. "3D trajectory optimization of an acrobatic air race with direct collocation method and quaternion equations of motion." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2019. http://amslaurea.unibo.it/18025/.
Повний текст джерелаGao, Jiuchun. "Optimal motion planning in redundant robotic systems for automated composite lay-up process." Thesis, Ecole centrale de Nantes, 2018. http://www.theses.fr/2018ECDN0015/document.
Повний текст джерелаThe thesis deals with the optimal motion planning in redundant robotic systems for automation of the composite lay-up processes. The primary goalis to improve the lay-up workcell productivity by developing a novel methodology of optimizing coordinated motions of the robotic manipulator,workpiece positioner and workspace extension unit,which ensure the shortest processing time and smooth movements of all mechanical components. In contrast to the previous works, the proposed methodology provides high computational efficiencyand also takes into account both the technological constraints and the robotic system constraints, which describe capacities of the actuators and are expressed by the maximum allowable velocities and accelerations in the actuated joints. The developed technique is based on conversion of the original continuous problem into a combinatorial one, where all possible configurations of the mechanical components are represented as a directed multi layergraph and the desired time-optimal motion is generated using dynamic programming principle for searching the shortest path on the graph satisfying the smoothness constraints. It is also proposed an enhancement of this technique by dividing the optimization procedure in two stages combining global and local searches. At the first stage, the developed algorithm is applied in the global search space generated with large discretization step. Then,the same technique is applied in the local search space, which is created with smaller step in the neighborhood of the obtained trajectory. The advantages of the developed methodology are confirmed by industrial implementation on the factory floor that deals with manufacturing of the high pressure vessel
Grymin, David J. "Two-Step System Identification and Primitive-Based Motion Planning for Control of Small Unmanned Aerial Vehicles." Diss., Virginia Tech, 2013. http://hdl.handle.net/10919/24520.
Повний текст джерелаPh. D.
Burger, Alissa Dian. "From 'The Wizard of Oz' to 'Wicked': Trajectory of American Myth." Bowling Green State University / OhioLINK, 2009. http://rave.ohiolink.edu/etdc/view?acc_num=bgsu1236369185.
Повний текст джерелаYu, Zitian. "Integrated Estimation and Motion Control for Electric Vehicles." The Ohio State University, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=osu1531778655719369.
Повний текст джерелаGandhi, Yogesh. "Motion planning and control for Differential Drive Wheel Mobile Robot (DDWMR)." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2017.
Знайти повний текст джерелаWesterberg, Simon. "Semi-Automating Forestry Machines : Motion Planning, System Integration, and Human-Machine Interaction." Doctoral thesis, Umeå universitet, Institutionen för tillämpad fysik och elektronik, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-89067.
Повний текст джерелаBishnoi, Abhiraj. "GPU-Assisted Collision Avoidance for Trajectory Optimization : Parallelization of Lookup Table Computations for Robotic Motion Planners Based on Optimal Control." Thesis, KTH, Skolan för elektroteknik och datavetenskap (EECS), 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-290587.
Повний текст джерелаEn av de största utmaningarna med optimeringsbaserade metoder för rörelseplaneringinom robotik är deras extrema känslighet för en bra initial gissning,särskilt i närvaro av lokala minima i kostnadsfunktionslandskapet. Ytterligareutmaningar kan också uppstå på grund av operativa begränsningar. Robotkontrollerhar ibland väldigt lite tid att planera en väg för att utföra en önskadfunktion. För att kringgå dessa begränsningar är en vanlig lösning att dela upprörelseplaneraren i en offline-fas och en online-fas. Offlinefasen inkluderarberäkning av referensvägar för olika punkter i ingångstillståndsutrymmet iform av en uppslagstabell. Under online-fasen levereras en avskalad versionav optimeraren med en lämplig initial gissning från uppslagstabellen medden aktuella uppskattningen av roboten och dess omgivande kroppar. Dennametod hjälper till att lindra problem relaterade till både lokala minima ochdriftstidsbegränsningar genom att sådd optimeraren med en lämplig initialgissning som gör att den kan konvergera till det globala minimumet mycketsnabbare.Problemet flyttas emellertid nu till beräkningskomplexiteten för att beräknaen uppslagstabell över referensvägar för ett tillräckligt fint utrymme för ingångstillståndsutrymmet.För många robotscenarier av intresse är det ofta opraktisktoch ibland beräkningsmässigt omöjligt att beräkna en uppslagstabell med hjälpav en seriell, enda kärnimplementering av offline-fasen i en rörelseplanner.Huvudbidraget till detta arbete är att utveckla och utvärdera en metod för attminska tiden som används för att beräkna en uppslagstabell över referensvägarunder offline-fasen för rörelsesplanerare baserat på optimal kontroll. Vi implementeraren metod för att utföra en kollision undvika en grafikbehandlingsenhet(GPU), medan du använder en uppgiftsbaserad metod för att distribuerauppslagningsberäkningar för oberoende delmängder av inmatningsutrymmeöver flera processer i ett kluster av maskiner. Vi demonstrerar effektivitetenav den föreslagna metoden i en praktisk miljö genom att implementeraoch utvärdera den inom en representativ rörelseplanner baserat på optimalkontroll. Vi noterar att den implementerade metoden är 115 gånger snabbareän den ursprungliga serieversionen av schemaläggaren, med 86 processer på 5maskiner med standardhårdvara och totalt 5 GPU: er. Dessutom observerarvi att den implementerade metoden resulterar i lösningar som är identiskamed den ursprungliga serieversionen i mer än 96,6 % av fallen, vilket gertrovärdighet för dess användning i robotrörelse planering.
Ellensohn, Felix [Verfasser], Daniel J. [Akademischer Betreuer] Rixen, Daniel J. [Gutachter] Rixen, and Richard [Gutachter] Romano. "Urban Motion Cueing Algorithms : Trajectory Optimization for Driving Simulators / Felix Ellensohn ; Gutachter: Daniel J. Rixen, Richard Romano ; Betreuer: Daniel J. Rixen." München : Universitätsbibliothek der TU München, 2020. http://d-nb.info/1204200246/34.
Повний текст джерелаLi, Ailin. "Miniaturization of Linear Ion Traps and Ion Motion Study in a Toroidal Ion Trap Mass Analyzer." BYU ScholarsArchive, 2017. https://scholarsarchive.byu.edu/etd/6503.
Повний текст джерелаШендрик, Віра Вікторівна, Вера Викторовна Шендрик, Vira Viktorivna Shendryk, Е. Kuznetsov, and Y. Mashyn. "Investigation of industrial robot-manipulator computer model motion control." Thesis, Sumy State University, 2017. http://essuir.sumdu.edu.ua/handle/123456789/55777.
Повний текст джерелаHenrie, Joshua H. "Planning Continuous Curvature Paths Using Constructive Polylines." Diss., CLICK HERE for online access, 2008. http://contentdm.lib.byu.edu/ETD/image/etd2542.pdf.
Повний текст джерелаHuawei, Wang. "IDENTIFICATION OF MOTION CONTROLLERS IN HUMAN STANDING AND WALKING." Cleveland State University / OhioLINK, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=csu1588964890459579.
Повний текст джерелаVan, der Walt Jennifer. "Developing a concept that can be used to quantify the motion of flyrock, with the intention of eventually producing a measuring tool for future flyrock research." Diss., University of Pretoria, 2019. http://hdl.handle.net/2263/73702.
Повний текст джерелаDissertation (MEng)--University of Pretoria, 2019.
AEL Mining Services Chair in Innovative Rock Breaking
Mining Engineering
MEng
Unrestricted
Chou, Chen-Kuan, and 周陳寬. "Trajectory planning for multi-axis motion control." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/97060180624838998492.
Повний текст джерела國立雲林科技大學
電機工程系
102
In this thesis has been integrated Point-to-Point motion and contour motion into more complete trajectory planning. Machine tool's demand as time goes by increase, Machine's requirement transforms simple point processing into complex path constraint contour processing, the basic theory of Trajectory planning transforms Point-to-Point motion into contour motion, but the contour motion's algorithm is more complex, so burden the massive calculation. However, the main condition of across the more complex algorithm is CPU's Performance increase, even maybe use hardware acceleration. In this thesis have two types. One is Point-to-Point motion that used T-Curve and S-Curve. Another one is contour motion that used PVT based on cubic Hermite interpolation. And then implement it and pass through packaged into easier use tools.
Chen, Jaw-Yeh, and 陳肇業. "The estimation of 3D object motion trajectory." Thesis, 2002. http://ndltd.ncl.edu.tw/handle/47066164761883791110.
Повний текст джерела國立交通大學
電機與控制工程系
90
The main approaches in this dissertation are the discussions of correspondence, pose estimation, and modified optical flow problems for 3D object motion estimation. Binocular image sequence data is used to solve the correspondence problem. When stereo imaging technique is used to produce binocular image sequence data, some properties naturally occur; then the correspondence problem can be solved by a very simple procedure. Pose estimation problem usually needs to find the least-squares solution of the error function; then the singular value decomposition is applied. The procedure always uses all feature points; hence, the computation burden is heavy. A norm vector-based procedure is proposed to obtain the pose and hence the motion trajectory. We use the change of norm vector to determine the plane, in which the rotation axis lies; then another change is used to determine the rotation axis and the rotation angle is obtained. Then the translation can be determined. Since only four points are used, the computation burden is light. Many optical flow techniques are not suitable when rotation is presented. Hence, a modified optical flow technique is proposed in this dissertation. Traditional methods usually obtain the flow in Cartesian coordinate; The flow is obtained in polar (spherical) coordinate in this dissertation. When the flow is calculated, then the rotation and translation component can be calculated very easily. At last, we extend the above discussions to 3D space optical flow.
Teng, Shang-Ju, and 鄧尚儒. "Motion Trajectory Based Video Indexing and Retrieval." Thesis, 2002. http://ndltd.ncl.edu.tw/handle/07158040655742557732.
Повний текст джерела國立清華大學
資訊工程學系
90
This thesis presents a technique to efficiently index and retrieve video clips in terms of motion-trajectory-based similarity. We describe a motion trajectory in three representations: the horizontal and vertical movements of the trajectory, and the motion trail that indicates shape of the trajectory. Each representation is approximated by a polynomial function, and the polynomial coefficients are then indexed for retrieval. To measure the matching distance, we combine different spatio-temporal characteristics to provide flexible retrieval processes. In addition, we also proposed a multiscale mode to improve the retrieval efficiency. A unified framework is developed to deal with various query types: query-by-example, query-by-sketch, and query-by-specification. We have performed many experiments to confirm the effectiveness and efficiency of our method. Experimental results indicate satisfactory performance of our work.
Zhang, Ming-Kai, and 張銘凱. "Multi-axis Motion Control of Trajectory Planning." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/46064709718039563906.
Повний текст джерела國立雲林科技大學
電機工程系
103
This thesis develop an architecture which integrate Point-to-Point motion and contour motion into Trajectory planning, and can work with DSP. Machine's requirement transforms simple point processing into complex contour processing with the progress of the times. The basic theory of Trajectory planning transforms Point-to-Point motion into contour motion, but the contour motion's algorithm is more complex. However, contour motion can be realized now, the major cause is CPU’s performance increased even use hardware acceleration. This thesis has two types. One is Point-to-Point motion that used T-Curve and S-Curve. Another one is contour motion that used PVT which is based on cubic Hermite interpolation and Spline which is based on cubic Spline interpolation. Then implement it.
Yu, Shang-Li, and 于尚立. "Motion-based Video Retrieval by Trajectory Matching." Thesis, 2003. http://ndltd.ncl.edu.tw/handle/22209157147694698298.
Повний текст джерела元智大學
電機工程學系
91
This thesis proposes a motion-based video retrieval system to retrieve desired videos from a video database through trajectory matching. First, in order to extract the trajectories of moving objects, a camera compensation method is proposed for estimating possible camera motions from time-varying backgrounds. The thesis uses an affine transform to model all possible global camera motions. Then, through feature extraction, feature matching, and a voting technique, desired camera motions can be accurately estimated from pair of image frames. Thus, the trajectories of moving objects can be easily found by image differencing and trajectory tracking. Once the trajectories of moving objects have been extracted, for each subsequence of videos, a set of control points are then sampled and recorded for further indexing. Before retrieving, all the sets of control points will be first transformed into different Bezier curves. Then, similarity comparisons of different video contents can be performed by comparing the sampled points extracted along the Bezier curves. According to the Bezier representation, a novel indexing framework is then proposed to retrieve desired video sequences from video databases no matter how different scaling and translations exist in these sequences. In addition, the proposed system has good properties in dealing with partial matching of curves. Thus, even though an incomplete query trajectory is given, all desired video sequences can be very accurately retrieved and returned to users. A great variety of experiments were conducted to verify the efficiency, effectiveness, and robustness of the proposed system. Experimental results have proved the superiority of our proposed method.
Liang, Wei-Bin, and 梁維彬. "Video Retrieval Based On Object''s Motion Trajectory." Thesis, 2003. http://ndltd.ncl.edu.tw/handle/71400665631081593153.
Повний текст джерела義守大學
資訊工程學系
91
With the fast growth of digital video, it is an important issue to develop an automatic and efficient video retrieval system for managing these data effectively. Contrary to spatial features in still images, video data also contain temporal features, such as visual motion trajectories of moving objects. In this thesis, we focus ourselves on developing a motion-based video indexing and retrieval. Compared with traditional strategies, we firstly propose a compact representation of motion trajectory for a moving object. Based on this representation, a two-layer motion matching strategy, named motion-map matching and elastic matching, is adopted to achieve both efficient and reliable retrieval. Moreover, we also discuss different query conditions, which contain directed matching, partial matching and translation/scaling invariance, so as to provide a useful and diversified motion-based query. Finally, we describe a prototype of motion-based video retrieval. Experimental results are given to demonstrate the effects of proposed methods.
Chan-HsuanChang and 張展瑄. "Trajectory Processing on MoCap Data for Motion Retargeting." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/96y5br.
Повний текст джерелаLin, Yi-Cheng, and 林意承. "Multi-Camera 3D Rigid Body Motion Trajectory Measurement." Thesis, 2019. http://ndltd.ncl.edu.tw/handle/jrq97b.
Повний текст джерела國立中興大學
機械工程學系所
107
In computer vision, camera obtained the two-dimensional image from an object. We could calculate the transformation of coordinate systems between camera and object by using Perspective N Points(PnP), then proceeding to know the movement which include translation and rotation. And this method could also use on the calibration of robot arm. In this research, we have a non-contact measurement system established by three cameras and the standard part which composed of precision steel balls would be driven by linear guideway and rotated table. Three-dimensional coordinates of the standard part would be obtained at different positions, while three cameras shoot from various directions. After using edge detection to obtain the edge information of the image, the center position of the image could be detected. In this way, we would have the coordinate position of the object in two dimensions and three dimensions, and we ultimately use the weighted average trajectory improve measurement methods which was proposed, calculates a more accurate object movement trajectory.