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Timm, Richard W. (Richard William). "Visual-based methods in compliant mechanism optimization". Thesis, Massachusetts Institute of Technology, 2006. http://hdl.handle.net/1721.1/35649.
Pełny tekst źródłaIncludes bibliographical references (p. 103-105).
The purpose of this research is to generate visual-based methods for optimizing compliant mechanisms (CMs). Visual-based optimization methods use graphical representations (3-D plots) of CM performance to convey design information. They have many advantages over traditional optimization methods, such as enabling judgment-based design tradeoffs and ensuring robustness of optimized solutions. This research fulfilled the primary aims of determining (1) how to best convey decision-driving design information, and (2) how to interpret and analyze the results of a visual-based optimization method. Other useful tools resulting from this work are (3) a nondimensional model of a CM (a compliant four-bar mechanism) that may be used to maximize the information density of optimization plots, and (4) a new model of a compliant beam that establishes a link between beam stiffness and instant center location. This work presents designers with an optimization tool that may either be used to augment or replace current optimization methods.
by Richard W. Timm.
S.M.
Ahmad, Naeem. "Modelling and optimization of sky surveillance visual sensor network". Licentiate thesis, Mittuniversitetet, Institutionen för informationsteknologi och medier, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:miun:diva-17123.
Pełny tekst źródłaChung, Ka Kei. "Interactive visual optimization and analysis for RFID system performance /". View abstract or full-text, 2009. http://library.ust.hk/cgi/db/thesis.pl?CSED%202009%20CHUNG.
Pełny tekst źródłaGisginis, Alexandros. "Production line optimization featuring cobots and visual inspection system". Thesis, Blekinge Tekniska Högskola, Institutionen för maskinteknik, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:bth-21752.
Pełny tekst źródłaTreptow, André. "Optimization techniques for real time visual object detection and tracking". Berlin Logos-Verl, 2007. http://deposit.d-nb.de/cgi-bin/dokserv?id=2938420&prov=M&dok_var=1&dok_ext=htm.
Pełny tekst źródłaChen, Zhaozhong. "Visual-Inertial SLAM Extrinsic Parameter Calibration Based on Bayesian Optimization". Thesis, University of Colorado at Boulder, 2019. http://pqdtopen.proquest.com/#viewpdf?dispub=10789260.
Pełny tekst źródłaVI-SLAM (Visual-Inertial Simultaneous Localization and Mapping) is a popular way for robotics navigation and tracking. With the help of sensor fusion from IMU and camera, VI-SLAM can give a more accurate solution for navigation. One important problem needs to be solved in VI-SLAM is that we need to know accurate relative position between camera and IMU, we call it the extrinsic parameter. However, our measurement of the rotation and translation between IMU and camera is noisy. If the measurement is slightly o?, the result of SLAM system will be much more away from the ground truth after a long run. Optimization is necessary. This paper uses a global optimization method called Bayesian Optimization to optimize the relative pose between IMU and camera based on the sliding window residual output from VISLAM. The advantage of using Bayesian Optimization is that we can get an accurate pose estimation between IMU and camera from a large searching range. Whats more, thanks to the Gaussian Process or T process of Bayesian Optimization, we can get a result with a known uncertainty, which cannot be done by many optimization solutions.
Verpers, Felix. "Improving a stereo-based visual odometry prototype with global optimization". Thesis, Uppsala universitet, Avdelningen för visuell information och interaktion, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-383268.
Pełny tekst źródłaAwang, Salleh Dayang Nur Salmi Dharmiza. "Study of vehicle localization optimization with visual odometry trajectory tracking". Thesis, Université Paris-Saclay (ComUE), 2018. http://www.theses.fr/2018SACLS601.
Pełny tekst źródłaWith the growing research on Advanced Driver Assistance Systems (ADAS) for Intelligent Transport Systems (ITS), accurate vehicle localization plays an important role in intelligent vehicles. The Global Positioning System (GPS) has been widely used but its accuracy deteriorates and susceptible to positioning error due to factors such as the restricting environments that results in signal weakening. This problem can be addressed by integrating the GPS data with additional information from other sensors. Meanwhile, nowadays, we can find vehicles equipped with sensors for ADAS applications. In this research, fusion of GPS with visual odometry (VO) and digital map is proposed as a solution to localization improvement with low-cost data fusion. From the published works on VO, it is interesting to know how the generated trajectory can further improve vehicle localization. By integrating the VO output with GPS and OpenStreetMap (OSM) data, estimates of vehicle position on the map can be obtained. The lateral positioning error is reduced by utilizing lane distribution information provided by OSM while the longitudinal positioning is optimized with curve matching between VO trajectory trail and segmented roads. To observe the system robustness, the method was validated with KITTI datasets tested with different common GPS noise. Several published VO methods were also used to compare improvement level after data fusion. Validation results show that the positioning accuracy achieved significant improvement especially for the longitudinal error with curve matching technique. The localization performance is on par with Simultaneous Localization and Mapping (SLAM) SLAM techniques despite the drift in VO trajectory input. The research on employability of VO trajectory is extended for a deterministic task in lane-change detection. This is to assist the routing service for lane-level direction in navigation. The lane-change detection was conducted by CUSUM and curve fitting technique that resulted in 100% successful detection for stereo VO. Further study for the detection strategy is however required to obtain the current true lane of the vehicle for lane-level accurate localization. With the results obtained from the proposed low-cost data fusion for localization, we see a bright prospect of utilizing VO trajectory with information from OSM to improve the performance. In addition to obtain VO trajectory, the camera mounted on the vehicle can also be used for other image processing applications to complement the system. This research will continue to develop with future works concluded in the last chapter of this thesis
Elsidani, Elariss Haifa. "A new visual query language and query optimization for mobile GPS". Thesis, Kingston University, 2008. http://eprints.kingston.ac.uk/20306/.
Pełny tekst źródłaHernandez, Herrero Sandra. "Cross-layer optimization for visual-inertial localization on resource-constrained devices". Thesis, KTH, Skolan för elektroteknik och datavetenskap (EECS), 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-296834.
Pełny tekst źródłaMobila enheter med begränsade resurser, som drönare och rovers, förväntas stödja mer och mer krävande cyberfysiska applikationer. Glappet mellan enheternas begränsningar i hårdvara och applikationskrav är dock fortfarande stort - motstridiga mål som robust, noggrann och effektiv körning måste uppfyllas för att uppnå acceptabel drift. Detta examensarbete undersöker avvägningen mellan prestanda och effektivitet i cyberfysiska system, särskilt med avseende på lokalisering som är en av de viktigaste uppgifterna för alla mobila autonoma enheter. Vi gör en design space exploration (DSE) genom att variera ett antal parametrar för både lokaliseringsalgoritm och plattformslager. Baserat på konfigurationsrummet formulerar vi ett tvärlageroptimeringsproblem med flera mål för att utforska avvägningen mellan noggrannhet i lokaliseringen och energiåtgång. I våra experiment kör vi maplab – ett visuellt tröghetsramverk för lokalisering och kartläggning – på Nvidia Jetson AGXoch NX-plattformarna. Vi presenterar sedan en robust prediktiv modell som kan användas för att välja konfigurationer vid körning i en föränderlig miljö.
Tall, Fredrik. "VR Performance for mobile devices : Optimization vs. visual shift against realism". Thesis, Luleå tekniska universitet, Institutionen för konst, kommunikation och lärande, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-64168.
Pełny tekst źródłaDenna rapport kommer att gå igenom prestanda och begränsningar av VR på mobila enheter för att uppnå realism. Det kommer att börja med en teoretisk del som enheten och VR-headsetet, och sedan en praktisk del där prestanda testas för att hitta relevanta kostnader för pixlar ändras i en redan skapad inomhus kontorsmiljö. Det ultimata målet för VR är Holodeck i Star Trek men utan behov av Starship Enterprise som en stor dator. Använda solglasögon och datorn har alla redan har i fickan, smartmobilen. Tekniken i smartmobiler rör sig fort, komponenter blir mindre och kraftfullare varje år. Det är inte ovanligt att de dubblar sin kapacitet från föregående års modell. I denna avhandling diskuteras begränsningarna av realistisk VR-grafik och deras kostnader för prestationsbegränsade enheter som finns i smartmobiler. Resultaten visar visuell effekt kontra prestanda i en kontorsmiljö skapad för Unity, den kommer att täcka... Vilka optimeringar i VR skapar mer autentiska pixlar, jämfört med deras kostnad i FPS när du måste ta hänsyn till en mycket mer limiterad prestationsbudget? Vilka parametrar är viktiga att arbeta med för att komma närmare en trovärdig rekreation av en verklig världsmiljö jämfört med kostnaden i FPS.
Lindstrand, Klas, i Axel Simonsson. "Optimization Workflow for Flat Slab Systems : Using Parametric Design with Visual programming". Thesis, KTH, Mekanik, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-230892.
Pełny tekst źródłaFramsteg inom IT och teknologi har möjliggjort utveckling av banbrytande verktyg som parametrisk design med visuell programmering. Konstruktörer har möjligheten att utnyttja denna utveckling genom att implementera visuell programmering, vilket i kombination med optimeringsalgoritmer kan generera alternativa konstruktionslösningar. Detta teknikskifte möjliggör ett närmare samarbete med arkitekter i tidiga skeden vilket kan resultera i mer vågade konstruktioner och arkitektur. Syftet med examensarbetet var att skapa ett arbetsflöde som utnyttjade parametrisk design och optimering i en visuell programmeringsmiljö som kunde utföra strukturanalys och optimering, vilket genererade optimala pelardäck med oväntade pelarplaceringar. Idén med detta var att arbetsflödet kunde implementeras i tidiga skeden med arkitekter, när den kan användas för att generera optimala pelardäck baserade på användarens indata. Därefter behöver de genererade lösningarna utvärderas och verifieras av en ingenjör, innan man fortsätter till nästa skede. Resultatet från arbetsflödet är att ett optimerat pelardäck med oväntade pelarplaceringar skapas genom en optimeringsprocess med indata innehållande geometri, laster, randvillkor och materialegenskaper. Detta arbetsflöde leder till ett angreppssätt som utnyttjar möjligheterna med parametrisk design och visuell programmering. Detta innebär att användaren kan påverka optimeringsprocessen för att smalna av resultatet för att hitta optimerade pelardäck baserade på projektets krav. Resultaten från strukturanalysen i arbetsflödet är inte helt tillförlitliga, vilket innebär att resultaten behöver verifieras. Sammanfattningsvis kan parametrisk design i kombination med visuell programmering och optimeringsalgoritmer skapa en mångfald av lösningar. Dessa alternativ kan inspirera ingenjörer att skapa nya konstruktionslösningar i tidiga skeden.
Leeds, Daniel Demeny. "Searching for the Visual Components of Object Perception". Research Showcase @ CMU, 2013. http://repository.cmu.edu/dissertations/313.
Pełny tekst źródłaGembler, Felix [Verfasser]. "Parameter Optimization for Brain-Computer Interfaces based on Visual Evoked Potentials / Felix Gembler". Bielefeld : Universitätsbibliothek Bielefeld, 2020. http://d-nb.info/1222672227/34.
Pełny tekst źródłaBoisard, Olivier. "Optimization and implementation of bio-inspired feature extraction frameworks for visual object recognition". Thesis, Dijon, 2016. http://www.theses.fr/2016DIJOS016/document.
Pełny tekst źródłaIndustry has growing needs for so-called “intelligent systems”, capable of not only ac-quire data, but also to analyse it and to make decisions accordingly. Such systems areparticularly useful for video-surveillance, in which case alarms must be raised in case ofan intrusion. For cost saving and power consumption reasons, it is better to perform thatprocess as close to the sensor as possible. To address that issue, a promising approach isto use bio-inspired frameworks, which consist in applying computational biology modelsto industrial applications. The work carried out during that thesis consisted in select-ing bio-inspired feature extraction frameworks, and to optimize them with the aim toimplement them on a dedicated hardware platform, for computer vision applications.First, we propose a generic algorithm, which may be used in several use case scenarios,having an acceptable complexity and a low memory print. Then, we proposed opti-mizations for a more global framework, based on precision degradation in computations,hence easing up its implementation on embedded systems. Results suggest that whilethe framework we developed may not be as accurate as the state of the art, it is moregeneric. Furthermore, the optimizations we proposed for the more complex frameworkare fully compatible with other optimizations from the literature, and provide encourag-ing perspective for future developments. Finally, both contributions have a scope thatgoes beyond the sole frameworks that we studied, and may be used in other, more widelyused frameworks as well
Johnander, Joakim. "Visual Tracking with Deformable Continuous Convolution Operators". Thesis, Linköpings universitet, Datorseende, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-138597.
Pełny tekst źródłaCabral, Ricardo da Silveira. "Unifying Low-Rank Models for Visual Learning". Research Showcase @ CMU, 2015. http://repository.cmu.edu/dissertations/506.
Pełny tekst źródłaGu, Hairong. "Graphic-Processing-Units Based Adaptive Parameter Estimation of a Visual Psychophysical Model". The Ohio State University, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=osu1350577967.
Pełny tekst źródłaDang, Duong Ngoc. "Humanoid manipulation and locomotion with real-time footstep optimization". Thesis, Toulouse, INPT, 2012. http://www.theses.fr/2012INPT0098/document.
Pełny tekst źródłaThis thesis focuses on realization of tasks with locomotion on humanoid robots. Thanks to their numerous degrees of freedom, humanoid robots possess a very high level of redundancy. On the other hand, humanoids are underactuated in the sense that the position and orientation of the base are not directly controlled by any motor. These two aspects, usually studied separately in manipulation and locomotion research, are unified in a same framework in this thesis and are resolved as one unique problem. Moreover, the generation of a complex movement involving both tasks and footsteps is also improved becomes reactive. By dividing the optimization process into appropriate stages and by feeding directly the intermediate result to a task-based controller, footsteps can be calculated and adapted in real-time to deal with changes in the environment. A perception module is also developed to build a closed perception-decision-action loop. This architecture combining motion planning and reactivity validated on the HRP-2 robot. Two classes of experiments are carried out. In one case the robot has to grasp an object far away at different height level. In the other, the robot has to step over an object on the floor. In both cases, the execution conditions are updated in real-time to deal with the dynamics of the environment: changes in position of the target to be caught or of the obstacle to be stepped over
Lavelle, Jerome Philip. "An optimization of the placement of flexible reflective post delineators from a visual detection point of view". Ohio : Ohio University, 1986. http://www.ohiolink.edu/etd/view.cgi?ohiou1183139198.
Pełny tekst źródłaLeung, Raymond Electrical Engineering & Telecommunications Faculty of Engineering UNSW. "Scalable video compression with optimized visual performance and random accessibility". Awarded by:University of New South Wales. Electrical Engineering and Telecommunications, 2006. http://handle.unsw.edu.au/1959.4/24192.
Pełny tekst źródłaKeil, Wolfgang Verfasser], Fred [Akademischer Betreuer] Wolf i Theo [Akademischer Betreuer] [Geisel. "Optimization principles and constraints shaping visual cortical architecture / Wolfgang Keil. Gutachter: Fred Wolf ; Theo Geisel. Betreuer: Fred Wolf". Göttingen : Niedersächsische Staats- und Universitätsbibliothek Göttingen, 2012. http://d-nb.info/1042305773/34.
Pełny tekst źródłaNaser, Karam Adil. "Modeling the Perceptual Similarity of Static and Dynamic Visual Textures : application to the Perceptual Optimization of Video Compression". Thesis, Nantes, 2017. http://www.theses.fr/2017NANT4013/document.
Pełny tekst źródłaTextures are special signals in the visual scene, where they can cover large areas. They can be classified into two categories: static and dynamic, where dynamic textures involve temporal variations. Several works on the perception of static textures made it possible to define visual similarity measurements for applications such as the recognition or classification of textures. These measures often use a representation inspired by the neural processing of the human visual system. However, such approaches have been little explored in the case of dynamic textures. In this thesis, a generalized perceptual model for the measurement of similarity applicable to static and dynamic textures has been developed. This model is inspired by the processing performed in the primary visual cortex. It is very effective for texture classification and recognition applications. The application of the model in the context of the perceptual optimization of video compression, was also studied. In particular, the integration of the similarity measure between textures, was used for the rate-distortion optimization of the encoder. Experimental results with human observers showed an improved visual quality of the decoded videos, with a significant reduction in the bitrate compared to the traditional approaches
Dang, Hieu. "Adaptive multiobjective memetic optimization: algorithms and applications". Journal of Cognitive Informatics and Natural Intelligence, 2012. http://hdl.handle.net/1993/30856.
Pełny tekst źródłaFebruary 2016
Thuresson, Sofia. "Parametric optimization of reinforced concrete slabs subjected to punching shear". Thesis, KTH, Betongbyggnad, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-279466.
Pełny tekst źródłaJust nu utvecklas Byggbranschen mot mer automatiserade och optimerade processer i projektdesignfasen. Denna utveckling beror till stor del på teknikutveckling i form av bättre datorprogram och tillgänglighet för dessa. Traditionellt sett löses komplexa konstruktionsproblem med hjälp av tidskrävande och storskaliga beräkningar, vilka sedan resulterar i ett begränsat antal utvärderade lösningar. Kvalitets lösningar bygger då på teknisk erfarenhet, antaganden och tidigare kunskaper inom ämnet.Användning av parametrisk design inom ett konstruktionsproblem är ett sätt att hantera komplexa lösningar. Dess metod avgränsar varje problem ner till ett antal lösbara parametrar, vilket gör att strukturen kan kontrolleras och rekombineras för att uppnå en optimal lösning.Denna avhandling introducerar begreppet parametrisk design och optimering i konstruktionsteknik, den förklarar hur programvaran fungerar och presenterar en fallstudie som genomförts för att utvärdera resultatet. I denna avhandling byggdes en parametrisk modell med hjälp av programvaran Dynamo för att hantera en designprocess av ett vanligt konstruktionsproblem. Det strukturella problemet som undersökts är en armerad betongplatta som stöds av en mittpelare, utsatt för genomstansning. Resultaten används för att utvärdera om en bättre design med avseende på materialanvändning har uppnåtts. Minimering av materialanvändning anses vara en bra parameter att undersöka eftersom det ger lägre kostnader och/eller lägre miljöpåverkan, detta undersöks under förutsättning att konstruktionens hållfasthet bibehålls. En parametrisk modell gör det möjligt för användaren att enkelt modifiera en konstruktionslösning med avseende på olika parametrar. Detta gör det till det perfekta verktyget att tillämpa en optimeringsprocess på.Syftet med denna avhandling var att hitta ett mer effektivt sätt att lösa ett komplext problem och att multiplicera antalet lösningar och utvärderingar av problemet jämfört med en mer konventionell metod. Fokus var att utveckla en parametrisk modell av en armerad betongplatta utsatt för genomstansning, som kommer att kunna genomföra optimering med avseende på tid som spenderas på projektet och därmed också kostnaden för konstruktionen och miljöpåverkan.Resultatet av denna fallstudie tyder på att det finns en stor möjlighet till kostnadsbesparingar och anses därför vara ett mycket hjälpsamt verktyg för en konstruktör. Resultatet visade flera lösningar som uppfyllde de konstruktionsmässiga kraven samtidigt som de gav en lägre materialanvändning tack vare optimeringen. Många lösningar tillhandahölls och utvärderades utöver vad som kunde ha gjorts i ett projekt med en konventionell metod. En parametrisk strategi kommer att hjälpa ingenjören att optimera lösningen för en konstruktion av denna typ.
Marco, Pontus. "Design & optimization of modular tanksystems for vehicle wash facilities". Thesis, Karlstads universitet, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:kau:diva-79009.
Pełny tekst źródłaAldahdooh, Ahmed. "Content-aware video transmission in HEVC context : optimization of compression, of error resilience and concealment, and of visual quality". Thesis, Nantes, 2017. http://www.theses.fr/2017NANT4011/document.
Pełny tekst źródłaIn this work, the global/local content characteristics are utilized in order to improve the delivery chain of the video sequences. The work is divided into four main parts that take advantages of video content features. The first part introduces a joint content-complexity encoder parameters prediction model. This model uses bitrate, distortion, and complexity of different parameters configurations in order to get the recommended encoder parameters value. Then, the links between content features and the recommended values are identified. Finally, the prediction model is built using these features and the recommended encoder parameter values. The second part illustrates the proposed multiple description coding (MDC) scheme that is optimized for high-order MDC. The corresponding decoding and content-dependent error recovery procedures are also identified. The quality of the received videos is evaluated subjectively. By analyzing the subjective experiment results, an adaptive, i.e. content-aware, scheme is introduced. Finally, an application scenario is simulated to study the realistic bitrate consumption. The third part uses the motion properties of a content to introduce a motion map that will be used as an input for the modified state-of-the-art inpainting based error concealment algorithm. A subjective experiment was conducted to evaluate the algorithm and also to study the content-aware observer’s disturbance when perceiving the processed videos. The fourth part has two sub-parts, the first one is about HRC selection algorithms for the large-scale video database with an improved performance evaluation measures for video quality assessment algorithms using training and validation sets. The second part introduces global content aware no-reference video quality assessment
Simonenko, Ekaterina. "OLAP query optimization and result visualization". Thesis, Paris 11, 2011. http://www.theses.fr/2011PA112138.
Pełny tekst źródłaIn this thesis, we explore different aspects of Data Warehousing and OLAP, the common point of our proposals being the functional model for data analysis. Our main objective is to use that model in studying three different, but related aspects:- query optimization through rewriting and cache management,- query result visualization,- mapping of a relational BCNF schema to a functional schema.Query optimization and cache management is a crucial issue in query processing in general, and in data warehousing in particular; and query rewriting is one of the basic techniques for query optimization. We establish derivability conditions for analytic functional queries, using a partial pre-order over the set of queries. Then we provide a sound and complete rewriting algorithm, as well as an optimized cache management strategy, both based on the underlying functional model.A second important aspect that we explore in the thesis is that of query result visualization. We show the importance for the visualization to reflect such essential features of the dataset as functional dependencies. We show that the connection existing between data and visualization is precisely the connection between their functional representations. We then define a framework, whose objective is to establish such a connection for a given dataset and a set of visualizations. In addition to the analysis of the visualization process, we use the functional data model as a guide for interactive visualization, and define what we call a parametric visualization. A third important aspect of our work is experimentation with the results obtained in the thesis. In order to be able to analyze the data contained in a Boyce-Codd Normal Form (BCNF) table, one can use the results obtained in this thesis, provided that the schema of the table can be mapped to a functional schema. We present such a mapping in this thesis. Once the relational schema has been transformed into a functional schema, we can take advantage of the query optimization and result visualization results presented in the thesis. We have used this transformation in the implementation of two prototypes in the context of two different projects
Hermann, Frank [Verfasser], i Hartmut [Akademischer Betreuer] Ehrig. "Analysis and Optimization of Visual Enterprise Models : Based on Graph and Model Transformation [[Elektronische Ressource]] / Frank Hermann. Betreuer: Hartmut Ehrig". Berlin : Universitätsbibliothek der Technischen Universität Berlin, 2011. http://d-nb.info/1014891507/34.
Pełny tekst źródłaD'Angio, Paul Christopher. "Adaptive and Passive Non-Visual Driver Assistance Technologies for the Blind Driver Challenge®". Diss., Virginia Tech, 2012. http://hdl.handle.net/10919/27582.
Pełny tekst źródłaPh. D.
Martínez, Ana Laura, i Natali Arvidsson. "Balance Between Performance and Visual Quality in 3D Game Assets : Appropriateness of Assets for Games and Real-Time Rendering". Thesis, Uppsala universitet, Institutionen för speldesign, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-413871.
Pełny tekst źródłaDen här uppsatsen utforskar balansen mellan visuell kvalitéoch prestanda i 3D modeller för spel. Vidare eftersträvar den att utgöra ett stöd för nya 3D-modelleingskonstnärer för att skapa modeller som är både visuellt adekvata och optimerade för att renderas i realtid. Dessutom undersöks skillnaden mellan omdömet av den visuella kvalitén mellan de som är bekanta med 3D datorgrafik och de som inte är det. Många förklaringar gällande optimering av 3D grafik är högst tekniska och utgör en utmaning för grafiker att förståsig på och försummar dessutom ofta effekten av hur optimering påverkar resultatet rent visuallet. Genom att testa ett flertal 3D modeller, mäta tiden det tar för dem att renderas, samt omdömen gällande visuella intryck, drogs slutsatsen att bedömning av 3D modellering för spel är väldigt kontextuell. Inget definitivt och enkelt sätt att hitta balansen mellan visuella kvalitén upptäcktes. Varken gällande prestanda eller visuell kvalité. Däremot gjordes några intressanta upptäckter angående bedömningen av den visuella kvalitén som observerades och presenterades.
Nielsen, Jerel Bendt. "Robust Visual-Inertial Navigation and Control of Fixed-Wing and Multirotor Aircraft". BYU ScholarsArchive, 2019. https://scholarsarchive.byu.edu/etd/7584.
Pełny tekst źródłaSeeman, Michal. "Zpracování obrazu pro lepší vjem a interakci". Doctoral thesis, Vysoké učení technické v Brně. Fakulta informačních technologií, 2012. http://www.nusl.cz/ntk/nusl-261263.
Pełny tekst źródłaGranberg, Andreas, i Joel Wahlstein. "Parametric design and optimization of pipe bridges : Automating the design process in early stage of design". Thesis, KTH, Bro- och stålbyggnad, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-277935.
Pełny tekst źródłaLiljengård, Anton. "Filstorleksoptimering för retuscheringsarbete : Enundersökning med fokus på moderetuschering". Thesis, Högskolan Dalarna, Grafisk teknologi, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:du-25077.
Pełny tekst źródłaDuring the processing of pictures today the file size often becomes large. An effective technological development has made the demand for quality higher. In a world where the photographer's camera has gotten a higher resolution, the image's file size has also increased. The aim of this thesis has been to come up with a recommendation for how to work towards getting a smaller file size. The recommendation was intended for retouchers who work in the fashion industry and with pictures meant for print. The work has dealt with file sizes associated with retouching and have tried to illustrate what during the retouch procedure that causes a larger file size. This has been done by contacting retouchers who often work with fashion images. The focus has been on the layers in Photoshop and editing options for the retoucher. The results showed that the retouchers had similar ways of working towards a small file size, and a certain similarity is apparent in their way of retouching which caused a bigger file size. What also showed was that the file size is the most affected by how layers consisting of pixels and masks look compared to adjustment layers.
Keukelaar, J. H. D. "Topics in Soft Computing". Doctoral thesis, KTH, Numerical Analysis and Computer Science, NADA, 2002. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-3294.
Pełny tekst źródłaChurch, Donald Glen. "Reducing Error Rates in Intelligence, Surveillance, and Reconnaissance (ISR) Anomaly Detection via Information Presentation Optimization". Wright State University / OhioLINK, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=wright1452858183.
Pełny tekst źródłaLupi, Giacomo. "Modelli e metodi metaeuristici per la gestione operativa di una rete distributiva cross-docking: il caso OneExpress". Master's thesis, Alma Mater Studiorum - Università di Bologna, 2021.
Znajdź pełny tekst źródłaFarkač, Daniel. "Aplikace VBA (Visual Basic for Application) a Maple na problémy procesního inženýrství". Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2009. http://www.nusl.cz/ntk/nusl-228712.
Pełny tekst źródłaLi, Hailong. "Analytical Model for Energy Management in Wireless Sensor Networks". University of Cincinnati / OhioLINK, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1367936881.
Pełny tekst źródłaCosta, Daniel Gouveia. "Otimiza??es da transmiss?o de imagens em redes de sensores visuais sem fio explorando a relev?ncia de monitoramento dos n?s fontes e codifica??o DWT". Universidade Federal do Rio Grande do Norte, 2013. http://repositorio.ufrn.br:8080/jspui/handle/123456789/15216.
Pełny tekst źródłaThe development of wireless sensor networks for control and monitoring functions has created a vibrant investigation scenario, covering since communication aspects to issues related with energy efficiency. When source sensors are endowed with cameras for visual monitoring, a new scope of challenges is raised, as transmission and monitoring requirements are considerably changed. Particularly, visual sensors collect data following a directional sensing model, altering the meaning of concepts as vicinity and redundancy but allowing the differentiation of source nodes by their sensing relevancies for the application. In such context, we propose the combined use of two differentiation strategies as a novel QoS parameter, exploring the sensing relevancies of source nodes and DWT image coding. This innovative approach supports a new scope of optimizations to improve the performance of visual sensor networks at the cost of a small reduction on the overall monitoring quality of the application. Besides definition of a new concept of relevance and the proposition of mechanisms to support its practical exploitation, we propose five different optimizations in the way images are transmitted in wireless visual sensor networks, aiming at energy saving, transmission with low delay and error recovery. Putting all these together, the proposed innovative differentiation strategies and the related optimizations open a relevant research trend, where the application monitoring requirements are used to guide a more efficient operation of sensor networks
O desenvolvimento de redes de sensores sem fio para fun??es de controle e monitoramento tem criado um pulsante cen?rio de investiga??o, abrangendo desde aspectos da comunica??o em rede at? quest?es como efici?ncia energ?tica. Quando sensores s?o equipados com c?meras para fun??es de monitoramento visual, um novo escopo de desafios ? lan?ado, uma vez que h? uma mudan?a significativa nos requisitos de monitoramento e transmiss?o. Em particular, sensores visuais coletam dados seguindo um modelo direcional de monitoramento, alterando conceitos j? estabelecidos de vizinhan?a e redund?ncia, por?m tornando poss?vel a diferencia??o de sensores pelas suas relev?ncias de monitoramento para a aplica??o. Nesse contexto, propomos que a relev?ncia de monitoramento dos sensores fontes sejam exploradas em conjunto com a codifica??o de imagens por transformada DWT, unindo assim dois diferentes escopos de relev?ncia para a cria??o de novos par?metros de QoS. Essa abordagem inovadora permite uma nova gama de otimiza??es da opera??o da rede, possibilitando aumento de desempenho com pequenas perdas na qualidade global de monitoramento. Al?m da defini??o de um novo conceito de relev?ncia e a proposi??o de mecanismos para suportar sua utiliza??o pr?tica, cinco diferentes otimiza??es da transmiss?o de imagens em redes de sensores visuais sem fio s?o propostas, visando economia de energia, transmiss?o com baixo atraso e recupera??o de erros. Em conjunto, as estrat?gias de diferencia??o e as otimiza??es relacionadas abrem uma importante vertente de pesquisa, onde os requisitos de monitoramento das aplica??es s?o utilizados para guiar uma opera??o mais eficiente da rede
Sundaramoorthi, Ganesh. "Global Optimizing Flows for Active Contours". Diss., Georgia Institute of Technology, 2007. http://hdl.handle.net/1853/16145.
Pełny tekst źródłaWahlberg, David. "Data Reduction Methods for Deep Images". Thesis, Högskolan i Gävle, Datavetenskap, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:hig:diva-25473.
Pełny tekst źródłaRangel, Elivelton Oliveira. "Otimiza??o de Redes de Sensores Visuais sem Fio por Algoritmos Evolutivos Multiobjetivo". Universidade Estadual de Feira de Santana, 2018. http://tede2.uefs.br:8080/handle/tede/675.
Pełny tekst źródłaMade available in DSpace on 2018-07-18T21:55:12Z (GMT). No. of bitstreams: 1 Disserta??o.pdf: 2639155 bytes, checksum: af49bdcdf83d4a063546324a223124a4 (MD5) Previous issue date: 2018-03-27
Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior - CAPES
Wireless visual sensor networks can provide valuable information for a lot of moni- toring and control applications, which has driven much attention from the academic community in last years. For some applications, a set of targets have to be covered by visual sensors and sensing redundancy may be desired in many cases, especially when applications have availability requirements or demands for multiple coverage perspectives for viewed targets. For rotatable visual sensors, the sensing orientations can be adjusted for optimized coverage and redundancy, with different optimization approaches available to address this problem. Particularly, as different optimization parameters may be considered, the redundant coverage maximization issue may be treated as a multi-objective problem, with some potential solutions to be conside- red. In this context, two different evolutionary algorithms are proposed to compute redundant coverage maximization for target viewing, intending to be more efficient alternatives to greedy-based algorithms. Simulation results reinforce the benefits of employing evolutionary algorithms for adjustments of sensors? orientations, poten- tially benefiting deployment and management of wireless visual sensor networks for different applications.
As redes de sensores visuais sem fio podem obter, atrav?s de c?meras, informa??es importantes para aplica??es de controle e monitoramento, e tem ganhado aten??o da comunidade acad?mica nos ?ltimos anos. Para algumas aplica??es, um conjunto de alvos deve ser coberto por sensores visuais, e por vezes com demanda de redund?ncia de cobertura, especialmente quando h? requisitos de disponibilidade ou demandas de m?ltiplas perspectivas de cobertura para os alvos visados. Para sensores visuais rotacion?veis, as orienta??es de detec??o podem ser ajustadas para otimizar cobertura e redund?ncia, existindo diferentes abordagens de otimiza??o dispon?veis para solucionar esse problema. Particularmente, como diferentes par?metros de otimizac?o podem ser considerados, o problema de maximiza??o de cobertura redundante pode ser tratado como um problema multiobjetivo, com algumas solu??es potenciais a serem consideradas. Neste contexto, dois algoritmos evolutivos diferentes s?o propostos para calcular a maximiza??o de cobertura redundante para visualiza??o de alvos, pretendendo ser alternativas mais eficientes para algoritmos gulosos. Os resultados da simula??o refor?am os benef?cios de empregar algoritmos evolutivos para ajustes das orienta??es dos sensores, potencialmente beneficiando a implanta??o e o gerenciamento de redes de sensores visuais sem fio para diferentes aplica??es.
Kim, Jae-Hak, i Jae-Hak Kim@anu edu au. "Camera Motion Estimation for Multi-Camera Systems". The Australian National University. Research School of Information Sciences and Engineering, 2008. http://thesis.anu.edu.au./public/adt-ANU20081211.011120.
Pełny tekst źródłaБабушкин, Б. Д., i B. D. Babushkin. "Разработка web-приложения решения задачи оптимизации состава многокомпонентной плавильной шихты : магистерская диссертация". Master's thesis, б. и, 2021. http://hdl.handle.net/10995/99885.
Pełny tekst źródłaThe master's thesis is devoted to the development of a web application for solving the problem of optimizing the composition of a multicomponent melting mixture. In the course of the work, the main stages of software development were considered: analysis of the subject area; creation of software architecture; development of algorithmic support and reference documentation; distribution kit preparation. In the process of performing the work, all the goals and objectives of the project have been realized. The main users of the system are specialists of the engineering and technological personnel of blast-furnace shops, students. The scientific novelty of the results obtained in the work lies in the application of a new method of effective organization and maintenance of specialized algorithmic and software for solving the problem of optimizing the calculation of a multicomponent melting charge, focused on increasing the efficiency of control of the processes of obtaining high-quality alloys using modern information processing methods: use of flexible development methodology (Agile) and the Atlassian JIRA task tracker for project management, interaction with the customer during development, tracking errors, visual display of tasks and monitoring the process of their implementation; functional modeling of processes for the implementation of a web-application for solving the problem of optimizing the costs of transportation of products based on the IDEF0 methodology and Ramus Educational tools; using the method of collective ownership of the program code based on the service (remote repository) Atlassian Bitbucket. The practical significance of the results lies in the fact that the developed software will allow: to calculate the optimal composition of the multicomponent melting mixture; to the engineering and technological personnel of foundries of metallurgical enterprises to reduce the time for performing calculations of the composition of a multicomponent melting mixture by implementing an ergonomic web interface; for specialists of the information systems support department, it provides conditions for reducing labor costs for maintaining, improving and developing the system, taking into account the wishes of users. The results of the work can also be used in the educational process for training bachelors and undergraduates in the direction of "Information systems and technologies".
Wholey, Leonard N. (Leonard Nathaniel). "Trajectory optimization with detection avoidance for visually identifying an aircraft". Thesis, Massachusetts Institute of Technology, 2005. http://hdl.handle.net/1721.1/32458.
Pełny tekst źródłaIncludes bibliographical references (p. 115-118).
Unmanned aerial vehicles (UAVs) play an essential role for the US Armed Forces by performing missions deemed as "dull, dirty and dangerous" for a pilot. As the capability of UAVs expand. they will perform a broader range of missions such as air-to-air combat. The focus of this thesis is forming trajectories for the closing phase of an air-to-air combat scenario. A UAV should close with the suspected aircraft in a manner that allows a ground operator to visually identify the suspected aircraft while avoiding visual/electronic detection from the other pilot. This thesis applies and compares three methods for producing trajectories which enable a visual identification. The first approach is formulated as a mixed integer linear programming problem which can be solved in real time. However, there are limitations to the accuracy of a radar detection model formed with only linear equations, which might justify using a nonlinear programming formulation. With this approach the interceptor's radar cross section and range between the suspected aircraft and interceptor can be incorporated into the problem formulation. The main limitation of this method is that the optimization software might not be able to reach online an optimal or even feasible solution. The third applied method is trajectory interpolation. In this approach, trajectories with specified boundary values and dynamics are formed offline; online, the method interpolates between the given trajectories to obtain similar maneuvers with different initial conditions and end- states. With this method, because the number of calculations required to produce a feasible trajectory is known, the amount of time to calculate a trajectory can be estimated.
by Leonard N. Wholey.
S.M.
Penin, Bryan. "Contributions to optimal and reactive vision-based trajectory generation for a quadrotor UAV". Thesis, Rennes 1, 2018. http://www.theses.fr/2018REN1S101/document.
Pełny tekst źródłaVision constitutes one of the most important cues in robotics. A single monocular camera can provide rich visual information at a reasonable rate that can be used as a feedback for control, state estimation of mobile robots or safe navigation in unknown environments for instance. However, it is necessary to satisfy particular visual constraints on the image such as visibility and occlusion constraints during motion to keep some visual targets visible. Quadrotors are endowed with very reactive motion capabilities due to their compact structure and motor configuration. Moreover, vision from a (fixed) on-board camera will suffer from rotation motions due to the system underactuation. In this thesis, we want to benefit from the system aggressiveness to perform several vision-based navigation tasks. We assume state estimation relies solely on sensor fusion of an onboard inertial measurement unit (IMU) and a monocular camera that provides reliable pose estimates. Therefore, visual constraints are challenging and critical in this context. In this thesis we exploit numerical optimization to design feasible trajectories satisfying several state, input and visual nonlinear constraints. With the help of differential flatness and B-spline parametrization we will propose an efficient replanning strategy inspired form Model Predictive Control to generate smooth and agile trajectories. Finally, we propose a minimum-time planning algorithm that handles intermittent visibility losses in order to navigate in larger cluttered environments. This contribution brings state estimation uncertainty at the planning stage to produce robust and safe trajectories. All the theoretical developments discussed in this thesis are corroborated by simulations and experiments run by using a quadrotor UAV. The reported results show the effectiveness of proposed techniques
Жужгов, А. И., i A. I. Zhuzhgov. "Разработка web-приложения решения задачи оптимизации затрат на перевозку продукции : магистерская диссертация". Master's thesis, б. и, 2021. http://hdl.handle.net/10995/99886.
Pełny tekst źródłaThe object of the research is the process of transportation. The subject of the research is points of consumption and points of production, automation of the system for calculating the optimal cost of transportation. Assigned tasks: 1. Possibility of entering, adjusting and saving options for the calculation of optimization. 2. Displaying the calculation results in a graphical form on the user form. The purpose of this work is to create an information Web-application that will allow you to calculate the optimal cost of transportation of products, provide the user with the results of the calculation in a graphical form. The scientific novelty of the results obtained in the work lies in the application of a new method of effective organization and maintenance of specialized algorithmic and software solutions for the optimization of the cost of transportation of products, focused on improving the efficiency of management of cargo transportation processes using modern information processing methods: the use of flexible development methodology (Agile) and the Atlassian JIRA task tracker for project management, interaction with the customer during development, tracking errors, visual display of tasks and monitoring the process of their implementation; functional modeling of processes for the implementation of a web-application for solving the problem of optimizing the costs of transportation of products based on the IDEF0 methodology and Ramus Educational tools; using the method of collective ownership of the program code based on the service (remote repository) Atlassian Bitbucket. The practical significance of the results lies in the fact that the developed software will allow: to calculate the optimal cost of transportation for any number of points of production; for specialists of the transport and logistics operations department, to reduce the time for the formation of reporting documents, to reduce the time to search for the necessary actual reporting information due to the implementation of an ergonomic web interface; for specialists of the information systems support department, it provides conditions for reducing labor costs for maintaining, improving and developing the system, taking into account the wishes of users. The results of the work can also be used in the educational process for training bachelors and undergraduates in the direction "Information systems and technologies".
Jackson, James Scott. "Enabling Autonomous Operation of Micro Aerial Vehicles Through GPS to GPS-Denied Transitions". BYU ScholarsArchive, 2019. https://scholarsarchive.byu.edu/etd/8709.
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