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Rozprawy doktorskie na temat „Visual modelling”

Autor: Grafiati

Data publikacji: 4 czerwca 2021

Data aktualizacji: 4 lutego 2022

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1

Narbutas, Vilius. "Computational modelling of visual search." Thesis, University of Birmingham, 2018. http://etheses.bham.ac.uk//id/eprint/8772/.

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Visual search traditionally has two main competing theories of parallel and serial search and this architectural issue has not been solved to this day. The latest developments in the field have suggested a possibility that response time distributions may aid in differentiating the two competing theories. For this purpose we have used the best available serial model Competitive Guided Search and two biologically-plausible parallel models inspired by the theory of biased competition. The parallel models adopted a winner-take-all mechanism from Selective Attention for Identification Model as base

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Bühler, Frank Stefan. "Combining visual modelling with visual programming for CORBA component development." Thesis, De Montfort University, 2002. http://hdl.handle.net/2086/4068.

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Clarke, Alasdair Daniel Francis. "Modelling visual search for surface defects." Thesis, Heriot-Watt University, 2010. http://hdl.handle.net/10399/2351.

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Much work has been done on developing algorithms for automated surface defect detection. However, comparisons between these models and human perception are rarely carried out. This thesis aims to investigate how well human observers can nd defects in textured surfaces, over a wide range of task di culties. Stimuli for experiments will be generated using texture synthesis methods and human search strategies will be captured by use of an eye tracker. Two di erent modelling approaches will be explored. A computational LNL-based model will be developed and compared to human performance in terms of

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4

Woodbury, Greg. "Modelling Emergent Properties of the Visual Cortex." University of Sydney. School of Mathematics and Statistics, 2003. http://hdl.handle.net/2123/695.

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Wu, Qi. "Modelling visual objects regardless of depictive style." Thesis, University of Bath, 2015. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.646137.

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Visual object classifcation and detection are major problems in contemporary com- puter vision. State-of-art algorithms allow thousands of visual objects to be learned and recognized, under a wide range of variations including lighting changes, occlusion and point of view etc. However, only a small fraction of the literature addresses the problem of variation in depictive styles (photographs, drawings, paintings etc.). This is a challenging gap but the ability to process images of all depictive styles and not just photographs has potential value across many applications. This thesis aims to na

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Dziemianko, Michal. "Modelling eye movements and visual attention in synchronous visual and linguistic processing." Thesis, University of Edinburgh, 2013. http://hdl.handle.net/1842/9377.

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This thesis focuses on modelling visual attention in tasks in which vision interacts with language and other sources of contextual information. The work is based on insights provided by experimental studies in visual cognition and psycholinguistics, particularly cross-modal processing. We present a series of models of eye-movements in situated language comprehension capable of generating human-like scan-paths. Moreover we investigate the existence of high level structure of the scan-paths and applicability of tools used in Natural Language Processing in the analysis of this structure. We show

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Stewart, Finlay J. "Modelling visual-olfactory integration in free-flying Drosophila." Thesis, University of Edinburgh, 2010. http://hdl.handle.net/1842/3192.

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Flying fruit flies (Drosophila melanogaster) locate a concealed appetitive odour source most accurately in environments containing vertical visual contrasts (Frye et al, 2003). To investigate how visuomotor and olfactory responses interact to cause this phenomenon, I implement a tracking system capable of recording flies’ flight trajectories in three dimensions. I examine free-flight behaviour in three different visual environments, with and without food odour present. While odour localisation is facilitated by a random chequerboard pattern compared to a horizontally striped one, a single vert

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8

Lazarevic, N. "Background modelling and performance metrics for visual surveillance." Thesis, Kingston University, 2011. http://eprints.kingston.ac.uk/21831/.

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This work deals with the problems of performance evaluation and background modelling for the detection of moving objects in outdoor video surveillance datasets. Such datasets are typically affected by considerable background variations caused by global and partial illumination variations, gradual and sudden lighting condition changes, and non-stationary backgrounds. The large variation of backgrounds in typical outdoor video sequences requires highly adaptable and robust models able to represent the background at any time instance with sufficient accuracy. Furthermore, in real life application

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9

Mineault, Patrick. "Parametric modelling of visual cortex at multiple scales." Thesis, McGill University, 2014. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=123020.

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The visual system is confronted with the daunting task of extracting behaviourally relevant visual information from noisy and ambiguous patterns of luminance falling on the retina. It solves this problem through a hierarchical architecture, in which the visual stimulus is iteratively re-encoded into ever more abstract representations which can drive behaviour. This thesis explores the question of how the computations performed by neurons in the visual hierarchy create behaviourally relevant representations. This question requires probing the visual system at multiple scales: computation is the

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10

Jilani, Mohd Zairul Mazwan Bin. "Simultaneous modelling and clustering of visual field data." Thesis, Brunel University, 2017. http://bura.brunel.ac.uk/handle/2438/17227.

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In the health-informatics and bio-medical domains, clinicians produce an enormous amount of data which can be complex and high in dimensionality. This scenario includes visual field data, which are used for managing the second leading cause of blindness in the world: glaucoma. Visual field data are the most common type of data collected to diagnose glaucoma in patients, and usually the data consist of 54 or 76 variables (which are referred to as visual field locations). Due to the large number of variables, the six nerve fiber bundles (6NFB), which is a collection of visual field locations in

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11

Huth, Jacob. "Modelling Aging in the Visual System & The Convis Python Toolbox." Electronic Thesis or Diss., Sorbonne université, 2018. http://www.theses.fr/2018SORUS140.

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Dans cette thèse, nous étudions les processus de vieillissement dans le système visuel à partir d’une perspective de modélisation computationnelle. Nous passons en revue les phénomènes de vieillissement neuronal, les changements fondamentaux du vieillissement et les mécanismes possibles qui peuvent relier les causes et les effets. Les hypothèses que nous formulons à partir de cette revue sont : l’hypothèse de bruit d’entrée, l’hypothèse de plasticité, l’hypothèse de matière blanche et l’hypothèse d’inhibition. Puisque l’hypothèse de bruit d’entrée a la possibilité d’expliquer un certain nombre

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12

Apaydin, Mehmetcan. "Biologically Inspired Multichannel Modelling Of Human Visual Perceptual System." Master's thesis, METU, 2005. http://etd.lib.metu.edu.tr/upload/12606772/index.pdf.

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Making a robot autonomous has been a common challenge to be overcome since the very beginning. To be an autonomous system, the robot should collect environmental data, interpret them, and act accordingly. In order to accomplish these, some resource management should be conducted. That is, the resources, which are time, and computation power in our case, should be allocated to more important areas. Existing researches and approaches, however, are not always human like. Indeed they don&rsquo<br>t give enough importance on this. Starting from this point of view, the system proposed in this thesis

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13

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.

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A Visual Sensor Network (VSN) is a distributed system of a largenumber of camera sensor nodes. The main components of a camera sensornode are image sensor, embedded processor, wireless transceiver and energysupply. The major difference between a VSN and an ordinary sensor networkis that a VSN generates two dimensional data in the form of an image, whichcan be exploited in many useful applications. Some of the potentialapplication examples of VSNs include environment monitoring, surveillance,structural monitoring, traffic monitoring, and industrial automation.However, the VSNs also raise new ch

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14

Hallum, Luke Edward Graduate School of Biomedical Engineering Faculty of Engineering UNSW. "Prosthetic vision : Visual modelling, information theory and neural correlates." Publisher:University of New South Wales. Graduate School of Biomedical Engineering, 2008. http://handle.unsw.edu.au/1959.4/41450.

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Electrical stimulation of the retina affected by photoreceptor loss (e.g., cases of retinitis pigmentosa) elicits the perception of luminous spots (so-called phosphenes) in the visual field. This phenomenon, attributed to the relatively high survival rates of neurons comprising the retina's inner layer, serves as the cornerstone of efforts to provide a microelectronic retinal prosthesis -- a device analogous to the cochlear implant. This thesis concerns phosphenes -- their elicitation and modulation, and, in turn, image analysis for use in a prosthesis. This thesis begins with a comparative r

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15

Singh, Avinash. "Alfalfa response to grazing, cultivar evaluation and visual modelling." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape2/PQDD_0017/NQ53078.pdf.

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16

Shin, Dongjoe. "Robust surface modelling of visual hull from multiple silhouettes." Thesis, University of Warwick, 2008. http://wrap.warwick.ac.uk/3788/.

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Reconstructing depth information from images is one of the actively researched themes in computer vision and its application involves most vision research areas from object recognition to realistic visualisation. Amongst other useful vision-based reconstruction techniques, this thesis extensively investigates the visual hull (VH) concept for volume approximation and its robust surface modelling when various views of an object are available. Assuming that multiple images are captured from a circular motion, projection matrices are generally parameterised in terms of a rotation angle from a refe

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17

Jenkins, Mark David. "Robust appearance based modelling for effective visual object tracking." Thesis, Glasgow Caledonian University, 2016. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.726754.

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18

Eguchi, Akihiro. "Neural network modelling of the primate ventral visual pathway." Thesis, University of Oxford, 2017. https://ora.ox.ac.uk/objects/uuid:99277b9c-00ee-45e3-8adb-47190d716912.

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The aim of this doctoral research is to advance understanding of how the primate brain learns to process the detailed spatial form of natural visual scenes. Neurons in successive stages of the primate ventral visual pathway encode the spatial structure of visual objects and faces. However, it remains a difficult challenge to understand exactly how these neurons develop their response properties through visually guided learning. This thesis approaches this problem through the use of computational modelling. In particular, I first show how the brain may learn to represent the spatial structure o

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19

Sadaghiani, Mohammad Hossein. "New method for mathematical modelling of human visual speech." Thesis, University of Nottingham, 2015. http://eprints.nottingham.ac.uk/29159/.

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Audio-visual speech recognition and visual speech synthesisers are used as interfaces between humans and machines. Such interactions specifically rely on the analysis and synthesis of both audio and visual information, which humans use for face-to-face communication. Currently, there is no global standard to describe these interactions nor is there a standard mathematical tool to describe lip movements. Furthermore, the visual lip movement for each phoneme is considered in isolation rather than a continuation from one to another. Consequently, there is no globally accepted standard method for

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20

Setyanto, Arief. "Hierarchical visual content modelling and query based on trees." Thesis, University of Essex, 2016. http://repository.essex.ac.uk/16903/.

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In recent years, such vast archives of video information have become available that human annotation of content is no longer feasible; automation of video content analysis is therefore highly desirable. The recognition of semantic content in images is a problem that relies on prior knowledge and learnt information and that, to date, has only been partially solved. Salient analysis, on the other hand, is statistically based and highlights regions that are distinct from their surroundings, while also being scalable and repeatable. The arrangement of salient information into hierarchical tree str

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21

Cowell, Rosemary Alice. "Modelling the effects of damage to perirhinal cortex and ventral visual stream on visual cognition." Thesis, University of Oxford, 2006. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.433315.

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22

Buchanan, Philip Hamish. "Artistic Content Representation and Modelling based on Visual Style Features." Thesis, University of Canterbury. Computer Science and Software Engineering, 2013. http://hdl.handle.net/10092/9225.

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This thesis aims to understand visual style in the context of computer science, using traditionally intangible artistic properties to enhance existing content manipulation algorithms and develop new content creation methods. The developed algorithms can be used to apply extracted properties to other drawings automatically; transfer a selected style; categorise images based upon perceived style; build 3D models using style features from concept artwork; and other style-based actions that change our perception of an object without changing our ability to recognise it. The research in this thesis

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23

MacCormick, John. "Probabilistic modelling and stochastic algorithms for visual localisation and tracking." Thesis, University of Oxford, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.342857.

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24

Crabb, David Paul. "Image processing and statistical modelling of visual function in glaucoma." Thesis, City University London, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.336427.

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25

Russell, David Mark. "Spatial and temporal background modelling of non-stationary visual scenes." Thesis, Queen Mary, University of London, 2009. http://qmro.qmul.ac.uk/xmlui/handle/123456789/598.

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The prevalence of electronic imaging systems in everyday life has become increasingly apparent in recent years. Applications are to be found in medical scanning, automated manufacture, and perhaps most significantly, surveillance. Metropolitan areas, shopping malls, and road traffic management all employ and benefit from an unprecedented quantity of video cameras for monitoring purposes. But the high cost and limited effectiveness of employing humans as the final link in the monitoring chain has driven scientists to seek solutions based on machine vision techniques. Whilst the field of machine

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26

Scheffler, Carl. "Applied Bayesian inference : natural language modelling and visual feature tracking." Thesis, University of Cambridge, 2012. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.610748.

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Nguyen, Phi Bang. "On The Use of Human Visual System Modelling in Watermarking." Paris 13, 2011. http://www.theses.fr/2011PA132035.

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De nos jours, la facilité de diffusion des contenus numériques offre de grandes possibilités de création mais également de reproduction illégale (contrefaçon) des œuvres. Cette banalisation des outils de capture et de manipulation de contenus numériques a des conséquences néfastes sur la société et l'économie. Pour faire face à ce problème, plusieurs solutions matérielles et immatérielles ont été proposées. Parmi les techniques connues, la cryptographie et le tatouage sont deux solutions complémentaires. Dans le cadre de cette thèse, nous nous intéressons plus particulièrement à la solution de

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Sang, Neil S. "Visual topology in SDI : a data structure for modelling landscape perception." Thesis, University of South Wales, 2011. https://pure.southwales.ac.uk/en/studentthesis/visual-topology-in-sdi(475699dd-3d19-4548-98a6-93f5e5c0d396).html.

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Visual Topology is used here to describe the spatial relations between objects as they appear in the 2D viewing plane. This thesis sets out the concept, explains why it is needed in Geographic Information Science and suggests how it may be computed through development of prototype software. Section 1 considers the functionality that any Spatial Data Infrastructure would need to encompass in order to support the inclusion of visual analysis into landscape planning and monitoring systems. Section 2 introduces various aspects of visual topology. In particular it sets out how visual intersections

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Adams, Nathan Grant. "A 2D visual language for rapid 3D scene design." Thesis, University of Canterbury. Computer Science and Software Engineering, 2009. http://hdl.handle.net/10092/3021.

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Automatic recognition and digitization of the features found in raster images of 2D topographic maps has a long research history. Very little such work has focused on creating and working with alternatives to the classic isoline-based topographic map.This thesis presents a system that generates 3D scenes from a 2D diagram format designed for user friendliness; with more geometric expressiveness and lower ink usage than classic topographic maps. This thesis explains the rationale for and the structure of the system, and the difficulties encountered in constructing it. It then describes a user s

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Engelke, Ulrich. "Modelling Perceptual Quality and Visual Saliency for Image and Video Communications." Doctoral thesis, Karlskrona : Blekinge Institute of Technology, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:bth-00470.

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The evolution of advanced radio transmission technologies for third and future generation mobile radio systems has paved the way for the delivery of mobile multimedia services. This is further enabled through contemporary video coding standards, such as H.264/AVC, allowing wireless image and video applications to become a reality on modern mobile devices. The extensive amount of data needed to represent the visual content and the scarce channel bandwidth constitute great challenges for network operators to deliver an intended quality of service. Appropriate metrics are thus instrumental for se

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Cruickshanks, Katie Lawson. "The study of intertidal mollusc polymorphism using spectroradiometry and visual modelling." Thesis, University of Southampton, 2006. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.427448.

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Galeazzi, González Juan Manuel. "Computational modelling of hand-centred visual representations in the primate brain." Thesis, University of Oxford, 2015. https://ora.ox.ac.uk/objects/uuid:89157e30-b776-4297-9391-0e2b257b6d82.

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Neurons have been found in various areas of the primate brain that respond to the location of objects with respect to the hand. In this thesis we present a number of self-organising theories of how these hand-centred visual receptive fields could develop during visually guided learning in unsupervised neural network models. Experimental chapters 3 and 4 show the development of hand-centred representations under two different learning hypotheses Continuous Transformation learning and Trace learning, using a neural network model of the primate visual system, VisNet. In Chapter 5 the trace learni

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Ugail, Hassan, and A. Sourin. "Partial differential equations for function based geometry modelling within visual cyberworlds." IEEE Computer Society, 2008. http://hdl.handle.net/10454/2612.

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We propose the use of Partial Differential Equations (PDEs) for shape modelling within visual cyberworlds. PDEs, especially those that are elliptic in nature, enable surface modelling to be defined as boundary-value problems. Here we show how the PDE based on the Biharmonic equation subject to suitable boundary conditions can be used for shape modelling within visual cyberworlds. We discuss an analytic solution formulation for the Biharmonic equation which allows us to define a function based geometry whereby the resulting geometry can be visualised efficiently at arbitrary levels of sha

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34

Obregón, Mateo. "Hemispheric effects in binocular visual word recognition : experiments and cognitive modelling." Thesis, University of Edinburgh, 2013. http://hdl.handle.net/1842/9732.

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Functionally, a vertically split fovea should confer an advantage to the processor. Visual stumuli arriving to each eye would be vertically split and the two parts sent to different hemispheres, obeying the crossed nature of the visual pathways. I test the prediction of a functional advantage for the separate lateralisation of text processing from the two eyes. I explore this hypothesis by means of psycholinguistic experimentation and cognitive modelling. I employed a haploscope to show foveated text to the two eyes separately, controlling for location and presentation duration, and guaranteei

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35

Tremblay, Pierre-Jules. "The skeptical explorer : a multiple-hypothesis approach to visual modelling and exploration." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape10/PQDD_0007/MQ44046.pdf.

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Bennett, Alan. "Robofish : visual tracking for modelling the interaction of real and robotic fish /." Leeds : University of Leeds, School of Computer Studies, 2008. http://www.comp.leeds.ac.uk/fyproj/reports/0708/BennettA.pdf.

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Luna, Ortiz Carlos Ricardo. "Modelling and analysis of Drosophila early visual system : a systems engineering approach." Thesis, University of Sheffield, 2018. http://etheses.whiterose.ac.uk/19574/.

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Over the past century or so Drosophila has been established as an ideal model organism to study, among other things, neural computation and in particular sensory processing. In this respect there are many features that make Drosophila an ideal model organism, especially the fact that it offers a vast amount of genetic and experimental tools for manipulating and interrogating neural circuits. Whilst comprehensive models of sensory processing in Drosophila are not yet available, considerable progress has been made in recent years in modelling the early stages of sensory processing. When it comes

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Dumbuya, Abdulai Don. "Visual perception modelling for intelligent virtual driver agents in synthetic driving simulation." Thesis, Loughborough University, 2003. https://dspace.lboro.ac.uk/2134/34591.

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This thesis documents new research into the modelling of driver vision and the integration of a new vision model into a microscopic traffic simulation tool. It is proposed and demonstrated that modelling of driver vision enhances the realism of simulated driver decision-making and behaviour, in turn, leading to improved simulation of driver interactions and traffic flow. Driving and traffic related research has traditionally fallen into the three distinct areas of driver psychology, traffic and highway engineering and vehicle dynamics, with modelling or experimentation in any of these areas su

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Figl, Kathrin, Michael Derntl, and Sonja Kabicher. "Visual modelling and designing for cooperative learning and development of team competences." Inderscience Enterprises Ltd, 2009. http://epub.wu.ac.at/5649/1/b807.pdf.

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This paper proposes a holistic approach to designing for the promotion of team and social competences in blended learning courses. Planning and modelling cooperative learning scenarios based on a domain specific modelling notation in the style of UML activity diagrams, and comparing evaluation results with planned outcomes allows for iterative optimization of a course's design. In a case study - a course on project management for computer science students - the instructional design including individual and cooperative learning situations was modelled. Specific emphasis was put on visualising t

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Afsar, Asfa Jubeen. "An investigation of the optical, visual and economic performance of the pseudophakic eye." Thesis, Glasgow Caledonian University, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.313173.

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Salt, John D. "The specification of interactive behaviour patterns in object-oriented discrete-event simulation modelling." Thesis, Brunel University, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.286822.

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Zvonimir, Dangel Ronald Josef [Verfasser]. "Modelling eye-hand movements in different visual feedback conditions / Ronald Josef Zvonimir Dangel." Aachen : Shaker, 2012. http://d-nb.info/1066197245/34.

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Song, Guanghan. "Effect of sound in videos on gaze : contribution to audio-visual saliency modelling." Thesis, Grenoble, 2013. http://www.theses.fr/2013GRENT013/document.

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Les humains reçoivent grande quantité d'informations de l'environnement avec vue et l'ouïe . Pour nous aider à réagir rapidement et correctement, il existe des mécanismes dans le cerveau à l'attention de polarisation vers des régions particulières , à savoir les régions saillants . Ce biais attentionnel n'est pas seulement influencée par la vision , mais aussi influencée par l'interaction audio - visuelle . Selon la littérature existante , l'attention visuelle peut être étudié à mouvements oculaires , mais l'effet sonore sur le mouvement des yeux dans les vidéos est peu connue . L'objectif de

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Ficapal, Vila Joan. "Anemone: a Visual Semantic Graph." Thesis, KTH, Skolan för elektroteknik och datavetenskap (EECS), 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-252810.

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Semantic graphs have been used for optimizing various natural language processing tasks as well as augmenting search and information retrieval tasks. In most cases these semantic graphs have been constructed through supervised machine learning methodologies that depend on manually curated ontologies such as Wikipedia or similar. In this thesis, which consists of two parts, we explore in the first part the possibility to automatically populate a semantic graph from an ad hoc data set of 50 000 newspaper articles in a completely unsupervised manner. The utility of the visual representation of th

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Backhaus, Andreas. "Computational modelling of visual search experiments with the selective attention for identification model (SAIM)." Thesis, University of Birmingham, 2007. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.487486.

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Visual search is a commonly used experimental procedure to explore human processing of visual multiple object scene (Wolfe, 1998b). This thesis introduces a new computational model of visual search, termed Selective Attention for Identification model (SAIM). SAIM aims to solve translation invariant object identification in a connectionist modelling framework. The thesis demonstrates that SAIM can successfully simulate the following experimental evidence: symmetric searches (L amongst Ts and/or upside down Ts (Duncan & Humphreys, 1989; Egeth & Dagenbach, 1991)), asymmetric searches of oriented

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Mangan, Michael. "Visual homing in field crickets and desert ants : a comparative behavioural and modelling study." Thesis, University of Edinburgh, 2011. http://hdl.handle.net/1842/5678.

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Visually guided navigation represents a long standing goal in robotics. Insights may be drawn from various insect species for which visual information has been shown sufficient for navigation in complex environments, however the generality of visual homing abilities across insect species remains unclear. Furthermore variousmodels have been proposed as strategies employed by navigating insects yet comparative studies across models and species are lacking. This work addresses these questions in two insect species not previously studied: the field cricket Gryllus bimaculatus for which almost no n

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Guedes, A. P. "An integrated approach to logistics strategy planning using visual interactive modelling and decision support." Thesis, Cranfield University, 1994. http://dspace.lib.cranfield.ac.uk/handle/1826/10740.

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The research in this thesis relates to the use of mathematical models and ièigputer-based modelling tools for supporting the Logistics Strategy Planning (LSP) process. conceptual modelling framework and a computer-based modelling and decision support system are developed to address practical LSP problems and improve the level of decision support currently reported. A LSP process T is described, its h complexity recognised, e and the problem domain defined. The evolution of the logistics strategy concept is addressed and defined a integrating procurement, production and distribution aspects. Th

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New, Stephen John. "The application of visual interactive modelling to managerial decision support in a manufacturing environment." Thesis, University of Manchester, 1993. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.668318.

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Mould, Matthew Simon. "Visual search in natural scenes with and without guidance of fixations." Thesis, University of Manchester, 2012. https://www.research.manchester.ac.uk/portal/en/theses/visual-search-in-natural-scenes-with-and-without-guidance-of-fixations(00c10ea2-34fa-40b9-a304-7c1829545475).html.

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From the airport security guard monitoring luggage to the rushed commuter looking for their car keys, visual search is one of the most common requirements of our visual system. Despite its ubiquity, many aspects of visual search remain unaccounted for by computational models. Difficulty arises when trying to account for any internal biases of an observer undertaking a search task or trying to decompose an image of a natural scene into relevant fundamental properties. Previous studies have attempted to understand visual search by using highly simplified stimuli, such as discrete search arrays.

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Tian, Jingduo. "Quantitative performance evaluation of autonomous visual navigation." Thesis, University of Manchester, 2017. https://www.research.manchester.ac.uk/portal/en/theses/quantitative-performance-evaluation-of-autonomous-visual-navigation(be6349b5-3b38-4ac5-aba2-fc64597fd98a).html.

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Autonomous visual navigation algorithms for ground mobile robotic systems working in unstructured environments have been extensively studied for decades. Among these work, algorithm performance evaluations between different design configurations mainly involve the use of benchmark datasets with a limited number of real-world trails. Such evaluations, however, have difficulties to provide sufficient statistical power for performance quantification. In addition, they are unable to independently assess the algorithm robustness to individual realistic uncertainty sources, including the environment

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