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Dissertations / Theses on the topic 'Estimation de la distance'

Author: Grafiati

Published: 25 May 2024

Last updated: 31 July 2025

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1

Lowe, Karsten. "Distance estimation between transceivers over short distances." Connect to this title online, 2007. http://etd.lib.clemson.edu/documents/1202417257/.

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2

Tekaya, Souhaiel Ben. "Distance estimation using handheld devices." Monterey, California: Naval Postgraduate School, 2013. http://hdl.handle.net/10945/34753.

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Approved for public release; distribution is unlimited<br>The different capabilities mobile devices can offer in the field of distance estimation for military applications are explored in this thesis. Of particular interest is the potential for using computer vision techniques to estimate distance in an operational military environment. The methods used for this investigation include a review of past literature on computer vision techniques in this domain, as well as an exploration of the different capabilities mobile devices offer in terms of sensors and networking. We present two potential s

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3

Andrieu, Guillaume. "Estimation par intervalle d'une distance évolutive." Montpellier 2, 1997. http://www.theses.fr/1997MON20233.

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L'objet de cette these est l'etude de la variabilite d'une estimation de la distance evolutive entre deux sequences moleculaires. Apres un bref apercu de l'historique des theories de l'evolution, nous presentons les differentes methodes de reconstruction phylogenetiques. Nous detaillons ensuite l'expression et l'estimation d'une distance evolutive entre deux sequences dans le cadre d'un modele stochastique de l'evolution. Deux methodes sont communement utilisees pour mesurer l'incertitude d'une estimation de la distance evolutive : l'estimation de la variance et le bootstrap. Nous proposons l'

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4

Lammi, J. (Jouni), P. (Petteri) Moilanen, and A. (Aleksi) Sierilä. "Size and distance estimation in virtual reality." Bachelor's thesis, University of Oulu, 2019. http://jultika.oulu.fi/Record/nbnfioulu-201906132541.

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Abstract. Interest in virtual reality (VR) has been on the rise in the recent few years. However, it is difficult to create virtual environments which provide realistic perception of scale for their users. We wanted to study how humans perceive scale in VR and ways to improve VR scale perception. We did a pilot test to see how design choices affect distance and height estimation in VR. For pilot tests we had nine test participants. Based on the experience gathered from the pilot test, we designed the main test. For the main test we had 44 participants. The main test showed similar result

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5

Warwick, Jane. "Selecting tuning parameters in minimum distance estimators." n.p, 2001. http://ethos.bl.uk/.

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6

Eriksson, Nils. "Estimation of Distance to empty for heavy vehicles." Thesis, Linköping University, Vehicular Systems, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-56905.

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<p>The distance to empty (DTE) for a heavy vehicle is valuable information both forthe driver and the hauler company. The DTE is estimated as the ratio between the current fuel level and a representative mean fuel consumption. This means the fuel consumption is a prediction of the most likely future mean fuel consumption based on earlier data. It is calculated by applying a forgetting filter on the signal of the momentary fuel consumption in the engine. The filter parameter control how many values that contributes to the output. This is a balance between desired robustness and adaptability of

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7

Gelman, Geoffrey M. (Geoffrey Michael) 1977. "Distance estimation through wavefront curvature in cellular systems." Thesis, Massachusetts Institute of Technology, 1999. http://hdl.handle.net/1721.1/80537.

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Thesis (S.B. and M.Eng.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1999.<br>Includes bibliographical references (leaves 78-79).<br>by Geoffrey M. Gelman.<br>S.B.and M.Eng.

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8

Vichare, Nitin Shrikrishna. "Robust Mahalanobis distance in power systems state estimation." Diss., Virginia Tech, 1993. http://hdl.handle.net/10919/40024.

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9

Huang, Kyman. "DISTANCE ESTIMATION USING OFDM SIGNALS FOR ULTRASONIC POSITIONING." DigitalCommons@CalPoly, 2020. https://digitalcommons.calpoly.edu/theses/2147.

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This paper describes a method of estimating distance via Time-of-Flight (TOF) measurement using ultrasonic Orthogonal Frequency Division Multiplexing (OFDM) signals. Using OFDM signals allows the signals and their sub-carriers to remain orthogonal to each other while continuously transmitting. This estimation method is based on the change of phase of a traveling wave as it propagates through a medium (air for ultrasonic signals). By using signals containing multiple tones, the phase change between each frequency component is slightly different. This phase difference is dependent on the distanc

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10

Campos, Jennifer L. Sun Hong-Jin. "Multisensory integration in the estimation of distance travelled." *McMaster only, 2007.

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11

Lenox, Joseph Daniel. "Distance Estimation to a Transmitter with Stateful Preprocessing." OpenSIUC, 2011. https://opensiuc.lib.siu.edu/theses/679.

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A method for estimating distance, in one dimension, to a transmitter for a receiver in motion relative to that transmitter is given with simulation data. The method relies on a stateful preprocessor filter and does not require envelopment of the transmitter.

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12

Richardson, Adam R. "The influence of prior interaction with an immersive virtual environment on user's distance estimates." Oxford, Ohio : Miami University, 2006. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=miami1161020618.

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13

Chu, Xiaoyuan. "Improving Estimation Accuracy using Better Similarity Distance in Analogy-based Software Cost Estimation." Thesis, Uppsala universitet, Institutionen för informationsteknologi, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-246116.

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Software cost estimation nowadays plays a more and more important role in practical projects since modern software projects become more and more complex as well as diverse. To help estimate software development cost accurately, this research does a systematic analysis of the similarity distances in analogy-based software cost estimation and based on this, a new non-orthogonal space distance (NoSD) is proposed as a measure of the similarities between real software projects. Different from currently adopted measures like the Euclidean distance and so on, this non-orthogonal space distance not on

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14

Xiang, Sijia. "Minimum Hellinger distance estimation in a semiparametric mixture model." Kansas State University, 2012. http://hdl.handle.net/2097/13762.

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Master of Science<br>Department of Statistics<br>Weixin Yao<br>In this report, we introduce the minimum Hellinger distance (MHD) estimation method and review its history. We examine the use of Hellinger distance to obtain a new efficient and robust estimator for a class of semiparametric mixture models where one component has known distribution while the other component and the mixing proportion are unknown. Such semiparametric mixture models have been used in biology and the sequential clustering algorithm. Our new estimate is based on the MHD, which has been shown to have good efficiency and

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15

Li, Zetong. "A Vision-Based Distance Estimation System for Flying Copters." Thesis, Université d'Ottawa / University of Ottawa, 2020. http://hdl.handle.net/10393/41009.

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Currently, as one of the most popular technologies being discussed and experimented, the application of flying copters in different industries is facing an obvious barrier; which is how to avoid obstacles while flying. One of the industries among all is small-sized package delivery business, which is also the master topic of a series of experiments. The most popular designs that have used for the Flying Copter Obstacle Avoidance System such as lidar scanners and infrared rangefinders are significantly accurate. However, with the heavyweight, expensive price and higher power consumption, these

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16

Warwick, Jane. "Selecting tuning parameters in minimum distance estimators." Thesis, Open University, 2002. http://oro.open.ac.uk/19918/.

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Many minimum distance estimators have the potential to provide parameter estimates which are both robust and efficient and yet, despite these highly desirable theoretical properties, they are rarely used in practice. This is because the performance of these estimators is rarely guaranteed per se but obtained by placing a suitable value on some tuning parameter. Hence there is a risk involved in implementing these methods because if the value chosen for the tuning parameter is inappropriate for the data to which the method is applied, the resulting estimators may not have the desired theoretica

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17

Vann, Bugmann Davi. "Retrieval, action and the representation of distance in cognitive maps." Thesis, University of Plymouth, 2003. http://hdl.handle.net/10026.1/2301.

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This thesis examines the context effects on retrieval, and the influence of action on the representation of distance in cognitive maps. It is proposed that bias in distance estimation is a function of the contexts of retrieval that trigger the representation of action in memory during evaluation tasks. The proposal is consistent with embodied cognition evidence that suggests that actions are implicitly a part of the representation, and will be naturally extracted as part of the retrieval process. The experimental work presented examines two different contextual cues; the frequency of visitatio

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18

Richardson, Adam R. "The Effect Of Feedback Training On Distance Estimation In Virtual Environments." Miami University / OhioLINK, 2004. http://rave.ohiolink.edu/etdc/view?acc_num=miami1074183671.

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19

Rowland, James H. "The effects of texture on distance estimation in synthetic environments." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 1999. http://handle.dtic.mil/100.2/ADA362882.

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Thesis (M.S. in Operations Research) Naval Postgraduate School, March 1999.<br>"March 1999". Thesis advisor(s): William K. Krebs, Rudolph P. Darken. Includes bibliographical references (p. 49-53). Also available online.

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20

Larsson, Johan. "Distance Estimation and Positioning Based on Bluetooth Low Energy Technology." Thesis, KTH, Skolan för informations- och kommunikationsteknik (ICT), 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-174857.

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This thesis deals with location determining, also known as positioning, using Bluetooth Low energy radio. The goal is to implement a low power low cost indoor positioning system which utilize existing hardware. Two main methods are investigated and their viability assessed. Previous efforts with indoor positioning systems concentrate on statistical fingerprinting methods, mainly using 802.11 (WLAN) as the platform. Some efforts have been made with purely signal strength based positioning, but indoor environments have shown to work unfavorably for these kinds of methods.

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21

Philippot, Luc. "Parameter estimation and error estimation for line fault location and distance protection in power transmission systems." Doctoral thesis, Universite Libre de Bruxelles, 1995. http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/212533.

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22

Bigel, Marla G. "The estimation of distance, direction and self-position through nonvisual locomotion." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape10/PQDD_0018/NQ38223.pdf.

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23

McGuire, Grainne. "Statistical methods for DNA sequences : detection of recombination and distance estimation." Thesis, University of Edinburgh, 1998. http://hdl.handle.net/1842/11128.

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Two problems in phylogenetics are considered here: the detection of evidence of recombination in DNA sequence multiple alignments and the improved estimation of confidence intervals for genetic distance estimators. Recombination between distinct species can result in mosaic sequences which often invalidate a simple tree-like model for between-species relationships. A graphical method based on pairwise distances and least squares is proposed as an initial scan of data sets for evidence of recombination prior to a phylogenetic analysis. A Bayesian model of recombination for data sets with a smal

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24

Azevedo, Glauco Gomes de. "Distance estimation for mixed continuous and categorical data with missing values." reponame:Repositório Institucional do FGV, 2018. http://hdl.handle.net/10438/24742.

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Submitted by Glauco Gomes de Azevedo (glaucogazevedo@gmail.com) on 2018-08-28T20:54:50Z No. of bitstreams: 1 dissertacao_glauco_azevedo.pdf: 1909706 bytes, checksum: 6636e75aa9da1db2615932f064fd1138 (MD5)<br>Approved for entry into archive by Janete de Oliveira Feitosa (janete.feitosa@fgv.br) on 2018-09-10T19:38:08Z (GMT) No. of bitstreams: 1 dissertacao_glauco_azevedo.pdf: 1909706 bytes, checksum: 6636e75aa9da1db2615932f064fd1138 (MD5)<br>Made available in DSpace on 2018-09-12T17:39:51Z (GMT). No. of bitstreams: 1 dissertacao_glauco_azevedo.pdf: 1909706 bytes, checksum: 6636e75aa9da1db261

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25

Kim, Tae-Min. "New estimation of caisson sliding distance for improvement of breakwater reliability design." 京都大学 (Kyoto University), 2004. http://hdl.handle.net/2433/145347.

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26

Mahey, Guillaume. "Unbalanced and linear optimal transport for reliable estimation of the Wasserstein distance." Electronic Thesis or Diss., Normandie, 2024. http://www.theses.fr/2024NORMIR29.

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Dans le contexte de l'apprentissage automatique, plusieurs problèmes peuvent se formuler comme des problèmes de comparaison entre distributions. La théorie mathématique du transport optimal permet une comparaison entre deux mesures de probabilité. Bien que très élégante en théorie, le transport optimal (TO) souffre de plusieurs inconvénients en pratique, notamment la charge de calcul, le risque de surapprentissage (overfitting) et sa sensibilité aux artefacts d'échantillonnage. Tout cela a motivé l'introduction de variantes à la fonction de perte associée au TO dans la communauté du machine le

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27

Canelhas, Daniel Ricão. "Truncated Signed Distance Fields Applied To Robotics." Doctoral thesis, Örebro universitet, Institutionen för naturvetenskap och teknik, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:oru:diva-59369.

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This thesis is concerned with topics related to dense mapping of large scale three-dimensional spaces. In particular, the motivating scenario of this work is one in which a mobile robot with limited computational resources explores an unknown environment using a depth-camera. To this end, low-level topics such as sensor noise, map representation, interpolation, bit-rates, compression are investigated, and their impacts on more complex tasks, such as feature detection and description, camera-tracking, and mapping are evaluated thoroughly. A central idea of this thesis is the use of truncated si

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28

Oravetz, Christopher. "Human estimation of slope, distance, and height of terrain in simulated lunar conditions." Thesis, Massachusetts Institute of Technology, 2009. http://hdl.handle.net/1721.1/47809.

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Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 2009.<br>Includes bibliographical references (p. 161-166).<br>As NASA's Vision for Space Exploration seeks to explore mountainous regions near the southern pole through frequent, long excursions, astronauts will require accurate navigational assistance. Current and future technology, including LIDAR data, laser rangefinders, and path planning programs will likely be available; however, the human's own perception of the terrain may affect their confidence in these instruments and be necessary during eme

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29

Ahmad, Husain Abdulrahman. "Dynamic Braking Control for Accurate Train Braking Distance Estimation under Different Operating Conditions." Diss., Virginia Tech, 2013. http://hdl.handle.net/10919/19322.

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The application of Model Reference Adaptive Control (MRAC) for train dynamic braking is investigated in order to control dynamic braking forces while remaining within the allowable adhesion and coupler forces. This control method can accurately determine the train braking distance. One of the critical factors in Positive Train Control (PTC) is accurately estimating train braking distance under different operating conditions. Accurate estimation of the braking distance will allow trains to be spaced closer together, with reasonable confidence that they will stop without causing a collision.

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30

Lescornel, Hélène. "Covariance estimation and study of models of deformations between distributions with the Wasserstein distance." Toulouse 3, 2014. http://www.theses.fr/2014TOU30045.

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La première partie de cette thèse est consacrée à l'estimation de covariance de processus stochastiques non stationnaires. Le modèle étudié amène à estimer la covariance du processus dans différents espaces vectoriels de matrices. Nous étudions dans le chapitre 3 une méthode de sélection de modèle par minimisation d'un critère pénalisé en utilisant des inégalités de concentration, et le chapitre 4 présente une méthode basée sur l'estimation sans biais du risque. Dans les deux cas des inégalités oracles sont obtenues. La seconde partie de cette thèse concerne l'étude de modèles de déformations

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Richardson, Adam. "THE INFLUENCE OF PRIOR INTERACTION WITH AN IMMERSIVE VIRTUAL ENVIRONMENT ON USER’S DISTANCE ESTIMATES." Miami University / OhioLINK, 2006. http://rave.ohiolink.edu/etdc/view?acc_num=miami1161020618.

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32

Braasch, Michael S. "Current developments in signal modeling of the precision distance measuring equipment." Ohio : Ohio University, 1989. http://www.ohiolink.edu/etd/view.cgi?ohiou1182283477.

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33

Anver, Haneef Mohamed. "Mean Hellinger Distance as an Error Criterion in Univariate and Multivariate Kernel Density Estimation." OpenSIUC, 2010. https://opensiuc.lib.siu.edu/dissertations/161.

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Ever since the pioneering work of Parzen the mean square error( MSE) and its integrated form (MISE) have been used as the error criteria in choosing the bandwidth matrix for multivariate kernel density estimation. More recently other criteria have been advocated as competitors to the MISE, such as the mean absolute error. In this study we define a weighted version of the Hellinger distance for multivariate densities and show that it has an asymptotic form, which is one-fourth the asymptotic MISE under weak smoothness conditions on the multivariate density f. In addition the proposed criteria

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34

Wallebäck, Peter. "Fuel Level Estimation for Heavy Vehicles using a Kalman Filter." Thesis, Linköping University, Department of Electrical Engineering, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-15702.

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<p>The object with this project is to develop a more accurate way to measure the level in the fuel tank in Scaniavehicles. The level should be displayed for the driver and a warning system be implemented to make the driveraware if the fuel level is too low. Furthermore a main goal is to develop an estimation of the distance that thevehicle could travel before refueling is needed.The fuel level estimation system is modeled using Matlab Simulink and simulated with measurement datacollected from real driving scenarios. After evaluating the system it is implemented in one of the electricalcontrol

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35

Gottleben, Emil. "Vision Based Control of Autonomous UAV." Thesis, Linköpings universitet, Reglerteknik, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-128870.

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This master thesis investigates the problem of making an unmanned aerial vehicle(uav) follow a person or a group of persons while keeping a fixed distance tothe chosen target. The purpose of this thesis is to give a proof of concept prototypeof how such a system would work to achieve that task. The main problemconsists of controlling the uav based on visual input from a camera. With thehelp of a visual object detection and tracking system, the image coordinates ofthe targets can be found. An algorithm was developed to calculate the target’sworld position based on its image coordinates and the

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D'Ambrosio, Philip. "A Differential Geometry-Based Algorithm for Solving the Minimum Hellinger Distance Estimator." Thesis, Virginia Tech, 2008. http://hdl.handle.net/10919/32228.

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Robust estimation of statistical parameters is traditionally believed to exist in a trade space between robustness and efficiency. This thesis examines the Minimum Hellinger Distance Estimator (MHDE), which is known to have desirable robustness properties as well as desirable efficiency properties. This thesis confirms that the MHDE is simultaneously robust against outliers and asymptotically efficient in the univariate location case. Robustness results are then extended to the case of simple linear regression, where the MHDE is shown empirically to have a breakdown point of 50%. A geomet

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37

Shafi, Muhammad. "Face pose estimation in monocular images." Thesis, Loughborough University, 2010. https://dspace.lboro.ac.uk/2134/5894.

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People use orientation of their faces to convey rich, inter-personal information. For example, a person will direct his face to indicate who the intended target of the conversation is. Similarly in a conversation, face orientation is a non-verbal cue to listener when to switch role and start speaking, and a nod indicates that a person has understands, or agrees with, what is being said. Further more, face pose estimation plays an important role in human-computer interaction, virtual reality applications, human behaviour analysis, pose-independent face recognition, driver s vigilance assessment

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Kakarlapudi, Geetha. "Analysis of beacon triangulation in random graphs." Texas A&M University, 2004. http://hdl.handle.net/1969.1/1447.

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Our research focusses on the problem of finding nearby peers in the Internet. We focus on one particular approach, Beacon Triangulation that is widely used to solve the peer-finding problem. Beacon Triangulation is based on relative distances of nodes to some special nodes called beacons. The scheme gives an error when a new node that wishes to join the network has the same relative distance to two or more nodes. One of the reasons for the error is that two or more nodes have the same distance vectors. As a part of our research work, we derive the conditions to ensure the uniqueness of distanc

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Hautiere, Nicolas. "Détection des conditions de visibilité et estimation de la distance de visibilité par vision embarquée." Phd thesis, Université Jean Monnet - Saint-Etienne, 2005. http://tel.archives-ouvertes.fr/tel-00068743.

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Les conditions météorologiques dégradées, en particulier le brouillard, posent un problème à la fois aux automobilistes qui ont tendance à surestimer les distances intervéhiculaires, mais aussi aux capteurs extéroceptifs qui fonctionnent de manière dégradée. La détection et la quantification des conditions de visibilité constituent donc un enjeu fort en termes de sécurité routière. Nous proposons deux techniques complémentaires permettant d'effectuer une mesure embarquée de la distance de visibilité par des techniques d'analyse d'images effectuées en temps réel. Elles reposent sur une définiti

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Graham, Gerhard. "An estimation of seismic anisotropy in the crust from three different time and distance scales." Thesis, University of Edinburgh, 1994. http://hdl.handle.net/1842/12056.

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In this thesis shear-wave splitting is analyzed in shear-wave arrivals from three different time and distance scales to identify the occurrence and extent of anisotropy in the crust. The refracted shear waves recorded by the closely spaced seismic network of the third Turkish Dilatancy Project from regional earthquakes in western Turkey have similar polarizations to those previously observed above local earthquakes, but with less scatter and substantially greater time delays (up to 1.0 s) between the split shear waves. This is interpreted as indicative of the presence of anisotropy in the lowe

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Hautière, Nicolas. "Détection des conditions de visibilité et estimation de la distance de visibilité par vision embarquée." Saint-Etienne, 2005. http://www.theses.fr/2005STET4006.

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Les conditions météorologiques dégradées, en particulier le brouillard, posent un problème à la fois aux automobilistes qui ont tendance à surestimer les distances intervéhiculaires, mais aussi aux capteurs extéroceptifs qui fonctionnent de manière dégradée. La détection et la quantification des conditions de visibilité constituent donc un enjeu fort en termes de sécurité routière. Nous proposons deux techniques complémentaires permettant d'effectuer une mesure embarquée de la distance de visibilité par des techniques d'analyse d'images effectuées en temps réel. Elles reposent sur une définiti

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42

Pérez, J. M., M. Sarasa, G. Moço, et al. "The effect of data analysis strategies in density estimation of mountain ungulates using distance sampling." Bachelor's thesis, Italian Journal of Zoology, 2014. http://hdl.handle.net/10174/16907.

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Distance sampling is being extensively used to estimate the abundance of animal populations. Nevertheless, the great variety of ways in which data can be analyzed may limit comparisons due to the lack of standardization of such protocols. In this study, the influence of analytical procedures for distance sampling data on density estimates and their precision was assessed. We have used data from 21 surveys of mountain ungulates in the Iberian Peninsula, France and the Italian Alps. Data from such surveys were analyzed with the program Distance 6.0. Our analyses show that estimated density can b

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Stolle, Martin Tobias. "Vers le vol à voile longue distance pour drones autonomes." Thesis, Toulouse, ISAE, 2017. http://www.theses.fr/2017ESAE0006.

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Les petit drones à voilure fixe rendent services aux secteurs de la recherche, de l'armée et de l'industrie, mais souffrent toujours de portée et de charge utile limitées. Le vol thermique permet de réduire la consommation d'énergie. Cependant,sans télédétection d'ascendances, un drone ne peut bénéficier d'une ascendance qu'en la rencontrant par hasard. Dans cette thèse, un nouveau cadre pour le vol à voile longue distance autonome est élaboré, permettant à un drone planeur de localiser visuellement des ascendances sous-cumulus et d’en récolter l'énergie de manière efficace. S'appuyant sur le

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44

Sorwar, Golam 1969. "A novel distance-dependent thresholding strategy for block-based performance scalability and true object motion estimation." Monash University, Gippsland School of Computing and Information Technology, 2003. http://arrow.monash.edu.au/hdl/1959.1/5510.

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Chen, Chien-Chih, and 陳建智. "An Architecture for Network Distance Estimation Service." Thesis, 2001. http://ndltd.ncl.edu.tw/handle/64714617905966489604.

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碩士<br>國立臺灣大學<br>資訊工程學研究所<br>89<br>With the prevailing of the Internet and the coming of the wideband era, there are increasing different types of services provided on the Internet. In order to provide better qualities, some service providers provide services in more than one place, i.e., clients can receive the same services in several different places. For example, some corporations own several mirror web sites around the world, and they all provide the same services. To receive better services and to decrease the wasted bandwidth, clients have to choose the nearest sites. Unfortunately, clie

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Tzeng, Jau_rong, and 曾昭絨. "Distance Estimation in Range-free Localization Schemes." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/13140429179638895535.

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碩士<br>國立中央大學<br>資訊工程研究所<br>99<br>In recent years, a number of location - based services have been proposed, such as search, target tracking and rescue. An accurate and efficient localization algorithm is crucial in supporting all these services in wireless networks. There are many different localization algorithms proposed in the literature. Due to the cost and limitation of hardware on sensing nodes, range-free localization schemes have received great deal of attention. Such schemes include two phases: distance estimation and triangulation. A better distance estimation helps improve the accur

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"Minimum Distance Estimation in Categorical Conditional Independence Models." Thesis, 2012. http://hdl.handle.net/1911/70285.

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One of the oldest and most fundamental problems in statistics is the analysis of cross-classified data called contingency tables. Analyzing contingency tables is typically a question of association - do the variables represented in the table exhibit special dependencies or lack thereof? The statistical models which best capture these experimental notions of dependence are the categorical conditional independence models; however, until recent discoveries concerning the strongly algebraic nature of the conditional independence models surfaced, the models were widely overlooked due to their unwie

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Chen, Yu-Chun, and 陳昱均. "Integrated Vehicle and Lane Detection with Distance Estimation." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/95350381871632941942.

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碩士<br>國立清華大學<br>資訊工程學系<br>102<br>This thesis proposes an Advanced Driver Assistance System (ADAS) that combines vehicle detection, lane detection, and distance estimation in a collaborative manner. Vehicle detection is an important research problem for Advanced Driver Assistance Systems. Most existing methods are based on the sliding window search framework. However, such methods are computationally intensive and easily produce large numbers of false positives because they need to search local windows of different scales at all positions in the image. Our efficient vehicle detection approach

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Chen, Tai-An, and 陳泰安. "Distance Estimation with Mobile Phone Using G-sensors." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/04408598141984259731.

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碩士<br>中原大學<br>電機工程研究所<br>101<br>In this thesis, we propose a study on distance estimation with mobile phone using G-sensors. We get the acceleration data to calculate distance with target through mobile phone equipped with G-sensors. In the thesis, we will present system architecture and two designs focuses. The design focuses are distance estimation and error correction mechanism. At first, we build the system under Android development environment, and use Android development resources to combine with G-sensors. Thus, we use the abundant resources to develop the system. Second, we use G-senso

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Sung, Ming-Chan, and 宋明展. "All Day Front Vehicle Distance Estimation in Highway." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/utz888.

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碩士<br>國立臺灣科技大學<br>電機工程系<br>106<br>In recent years, people have not only pursues automobile performance but also increases their awareness of safety. Major car manufacturers have also been eager to develop Advanced Driver Assistance Systems (ADAS) to enhance the safety of automobiles. The most important function of an ADAS is to issue warnings and assist driving before a dangerous situation occurs in order to avoid traffic accidents. In this thesis, the image processing methods are used to estimate the distance of the preceding vehicle and a method is proposed to decide whether the front has su

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