Дисертації з теми "Object constancy"
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Atherton, Christine J. "The neurobiology of object constancy." Thesis, Bangor University, 2005. https://research.bangor.ac.uk/portal/en/theses/the-neurobiology-of-object-constancy(3f31a74c-3acb-42f2-8941-967e61ad8bac).html.
Повний текст джерелаCraddock, Matthew Peter. "Comparing the attainment of object constancy in haptic and visual object recognition." Thesis, University of Liverpool, 2010. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.539615.
Повний текст джерелаBeigpour, Shida. "Illumination and Object Reflectance Modeling." Doctoral thesis, Universitat Autònoma de Barcelona, 2013. http://hdl.handle.net/10803/113551.
Повний текст джерелаSurface reflectance modeling is an important key to scene understanding. An accurate reflectance model which is based on the laws of physics allows us to achieve realistic and physically plausible results. Using such model, a more profound knowledge about the interaction of light with objects surfaces can be established which proves crucial to variety of computer vision application. Due to high complexity of the reflectance model, the vast majority of the existing computer vision applications base their methods on simplifying assumptions such as Lambertian reflectance or uniform illumination to be able to solve their problem. However, in real world scenes, objects tend to exhibit more complex reflections (diffuse and specular) and are furthermore affected by the characteristics and chromaticity of the illuminants. In this thesis, we incorporate a more realistic reflection model in computer vision applications. To address such complex physical phenomenon, we extend the state-of-the-art object reflectance models by introducing a Multi-Illuminant Dichromatic Reflection model (MIDR). Using MIDR we are able to model and decompose the reflectance of an object with complex specularities under multiple illuminants presenting shadows and inter-reflections. We show that this permits us to perform realistic re-coloring of objects lit by colored lights, and multiple illuminants. Furthermore, we propose a “local” illuminant estimation method in order to model the scenes with non-uniform illumination (e.g., an outdoor scene with a blue sky and a yellow sun, a scene with indoor lighting combined with outdoor lighting through a window, or any other case in which two or more lights with distinct colors illuminating different parts of the scene). The proposed method takes advantage of a probabilistic and graph-based model and solves the problem by re-defining the estimation problem as an energy minimization. This method provides us with local illuminant estimations which improve greatly over state-of-the-art color constancy methods. Moreover, we captured our own multi-illuminant dataset which consists of complex scenes and illumination conditions both outdoor and in laboratory conditions. We show improvement achieved using our method over state-of-the-art methods for local illuminant estimation. We demonstrate that having a more realistic and accurate model of the scene illumination and object reflectance greatly improves the quality of many computer vision and computer graphics tasks. We show examples of improved automatic white balance, scene relighting, and object re-coloring. The proposed theory can be employed in order to improve color naming, object detection, recognition, and segmentation which are among the most popular computer vision trends.
De, Simone Luca. "Tell it to the hand: Attentional modulation in the identification of misoriented chiral objects." Doctoral thesis, SISSA, 2015. http://hdl.handle.net/20.500.11767/3919.
Повний текст джерелаMiles, Geoffrey. "Untir'd spirits and formal constancy : Shakespeare's Roman plays and formal constancy." Thesis, University of Oxford, 1987. http://ora.ox.ac.uk/objects/uuid:c5830cc5-e1a4-4efa-ae40-98dc4d7eb651.
Повний текст джерелаLing, Yazhu. "The colour perception of natural objects : familiarity, constancy and memory." Thesis, University of Newcastle Upon Tyne, 2006. http://hdl.handle.net/10443/639.
Повний текст джерелаYu, Ying. "Visual Appearances of the Metric Shapes of Three-Dimensional Objects: Variation and Constancy." The Ohio State University, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=osu1592254922173432.
Повний текст джерелаVerneque, Felipe de Almeida. "Críticas da pesquisa educacional brasileira: presença constante do empirismo." Universidade do Estado do Rio de Janeiro, 2013. http://www.bdtd.uerj.br/tde_busca/arquivo.php?codArquivo=7655.
Повний текст джерелаO tema central desta investigação, desenvolvida através de pesquisa bibliográfica, é a prática da pesquisa em educação no Brasil. O objetivo principal foi apresentar as análises sobre os aspectos teóricos-metodológicos dessa prática. A pesquisa foi feita a partir de uma discussão conceitual sobre os fundamentos teórico-metodológicos da investigação científica em educação. As questões abordadas pela dissertação acerca dos pressupostos teórico-metodológicos indicam a presença da empiria como opção epistemológica na prática investigativa em educação. Com ênfase especial às críticas à presença da perspectiva empírica no trabalho de conhecimento da realidade educativa, a dissertação busca identificar as fragilidades teórico-metodológicas na pesquisa em educação. Por fim, em face destas questões, foi apresentada outra perspectiva epistemológica para se pensar a prática investigativa em educação, a partir das contribuições de Miriam Limoeiro Cardoso (1976, 1978, 1990). Em linhas gerais, ao longo da dissertação, foram levantadas questões, discussões que, de modo geral, são concernentes ao processo de produção de conhecimento, a partir da investigação na área da educação, no que tange aos aspectos teóricos, metodológicos, epistemológicos.
The central theme of this research, developed through bibliographic research, is the practice of educational research. The main objective was to present the analysis of the theoretical and methodological aspects of this practice. The research was done from a conceptual discussion on the theoretical and methodological foundations of scientific research in education. The questions presents by the dissertation about the theoretical and methodological assumptions indicate the presence of empiricism as an option in epistemological research practice in education. With special emphasis on the presence of critical empirical perspective on working knowledge of educational reality, the dissertation seeks to identify the theoretical and methodological weaknesses in educational research. Finally, in the face of these issues was presented another epistemological perspective to think the research practice in education, from the contributions of Miriam Limoeiro Cardoso (1976, 1978, 1990). In general, throughout the dissertation, questions were raised, discussions that, in general, are concerned with the process of knowledge production, from research in the area of education, in relation to the theoretical, methodological, epistemological.
Nakamura-Mather, Mika. "Notions of Home: Constant, Fluid, and Mobile." Thesis, Griffith University, 2017. http://hdl.handle.net/10072/370354.
Повний текст джерелаThesis (PhD Doctorate)
Doctor of Visual Arts (DVA)
Queensland College of Art
Arts, Education and Law
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Burt, George. "Towards a theory of volitional strategic change : the role of transitional objects in constancy and change." Thesis, University of Strathclyde, 2001. http://oleg.lib.strath.ac.uk:80/R/?func=dbin-jump-full&object_id=24283.
Повний текст джерелаVurro, Milena. "The role of chromatic texture and 3D shape in colour discrimination, memory colour, and colour constancy of natural objects." Thesis, University of Newcastle upon Tyne, 2011. http://hdl.handle.net/10443/1251.
Повний текст джерелаWallace, D. S. "Electron-lattice coupling in conjugated polymers." Thesis, University of Oxford, 1989. http://ora.ox.ac.uk/objects/uuid:49bef560-dfdc-43b2-b4e2-fdf6e4ee763d.
Повний текст джерелаHu, Mengchen. "Measurements of OH* and CH* in a constant volume combustion bomb." Thesis, University of Oxford, 2013. http://ora.ox.ac.uk/objects/uuid:ab2fba4d-d9fb-417b-993b-1b756b9ad7d6.
Повний текст джерелаHinton, Nathan Ian David. "Measuring laminar burning velocities using constant volume combustion vessel techniques." Thesis, University of Oxford, 2014. http://ora.ox.ac.uk/objects/uuid:5b641b04-8040-4d49-a7e8-aae0b0ffc8b5.
Повний текст джерелаHiggins, Benjamin David Robert. "We have a constant will to publish : the publishers of Shakespeare's First Folio." Thesis, University of Oxford, 2015. https://ora.ox.ac.uk/objects/uuid:ab876515-5984-46a5-8bf0-8346165fb583.
Повний текст джерелаHill, Rory Anthony Daniel. "Local, loyal and constant? : on the dynamism of 'terroir' in sustainable agriculture." Thesis, University of Oxford, 2016. https://ora.ox.ac.uk/objects/uuid:392a4f20-7660-4b54-b7b1-c333bb12c922.
Повний текст джерелаHedrich, Monika. "Human colour perception : a psychophysical study of human colour perception for real and computer-simulated two-dimensional and three-dimensional objects." Thesis, University of Bradford, 2009. http://hdl.handle.net/10454/4304.
Повний текст джерелаAustin, Anthony P. "Some new results on, and applications of, interpolation in numerical computation." Thesis, University of Oxford, 2016. https://ora.ox.ac.uk/objects/uuid:11c16937-4a59-494d-a06f-6d27b634e2f3.
Повний текст джерелаMore, Joshua N. "Algorithms and computer code for ab initio path integral molecular dynamics simulations." Thesis, University of Oxford, 2015. https://ora.ox.ac.uk/objects/uuid:b8ca7471-21e3-4240-95b1-8775e5d6c08f.
Повний текст джерелаCeh, Ondřej. "Průmyslová hala s administrativním objektem." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2019. http://www.nusl.cz/ntk/nusl-391917.
Повний текст джерелаHållen, Nicklas. "Travelling objects : modernity and materiality in British Colonial travel literature about Africa." Doctoral thesis, Umeå universitet, Institutionen för språkstudier, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-46365.
Повний текст джерелаRemmert, Sarah M. "Reduced dimensionality quantum dynamics of chemical reactions." Thesis, University of Oxford, 2011. http://ora.ox.ac.uk/objects/uuid:7f96405f-105c-4ca3-9b8a-06f77d84606a.
Повний текст джерелаShaw, Robert Laurence John. "The Celestine monks of France, c. 1350-1450 : monastic reform in an age of Schism, councils and war." Thesis, University of Oxford, 2014. http://ora.ox.ac.uk/objects/uuid:d1669ab4-1650-4396-b856-5e1fe53b5b7f.
Повний текст джерелаHaen, Roel. "Breast cancer related lymphedema." Thesis, University of Oxford, 2012. http://ora.ox.ac.uk/objects/uuid:c4a83ffc-790f-46ec-bde2-3ac639dd7c89.
Повний текст джерелаHeng, Jeremy. "On the use of transport and optimal control methods for Monte Carlo simulation." Thesis, University of Oxford, 2016. https://ora.ox.ac.uk/objects/uuid:6cbc7690-ac54-4a6a-b235-57fa62e5b2fc.
Повний текст джерелаHanning-Lee, Mark Adrian. "A study of atom and radical kinetics." Thesis, University of Oxford, 1990. http://ora.ox.ac.uk/objects/uuid:89cabe5d-7cc8-43b3-8c2a-686563ff1b3f.
Повний текст джерелаMeng, Yao. "Hydrogen electrochemistry in room temperature ionic liquids." Thesis, University of Oxford, 2012. http://ora.ox.ac.uk/objects/uuid:be24c6ea-c351-4855-ad9c-98e747ac87e4.
Повний текст джерелаBabichev, Dmitry. "On efficient methods for high-dimensional statistical estimation." Thesis, Paris Sciences et Lettres (ComUE), 2019. http://www.theses.fr/2019PSLEE032.
Повний текст джерелаIn this thesis we consider several aspects of parameter estimation for statistics and machine learning and optimization techniques applicable to these problems. The goal of parameter estimation is to find the unknown hidden parameters, which govern the data, for example parameters of an unknown probability density. The construction of estimators through optimization problems is only one side of the coin, finding the optimal value of the parameter often is an optimization problem that needs to be solved, using various optimization techniques. Hopefully these optimization problems are convex for a wide class of problems, and we can exploit their structure to get fast convergence rates. The first main contribution of the thesis is to develop moment-matching techniques for multi-index non-linear regression problems. We consider the classical non-linear regression problem, which is unfeasible in high dimensions due to the curse of dimensionality. We combine two existing techniques: ADE and SIR to develop the hybrid method without some of the weak sides of its parents. In the second main contribution we use a special type of averaging for stochastic gradient descent. We consider conditional exponential families (such as logistic regression), where the goal is to find the unknown value of the parameter. Classical approaches, such as SGD with constant step-size are known to converge only to some neighborhood of the optimal value of the parameter, even with averaging. We propose the averaging of moment parameters, which we call prediction functions. For finite-dimensional models this type of averaging can lead to negative error, i.e., this approach provides us with the estimator better than any linear estimator can ever achieve. The third main contribution of this thesis deals with Fenchel-Young losses. We consider multi-class linear classifiers with the losses of a certain type, such that their dual conjugate has a direct product of simplices as a support. We show, that for multi-class SVM losses with smart matrix-multiplication sampling techniques, our approach has an iteration complexity which is sublinear, i.e., we need to pay only trice O(n+d+k): for number of classes k, number of features d and number of samples n, whereas all existing techniques have higher complexity
Abdennur, Nezar A. "A Framework for Individual-based Simulation of Heterogeneous Cell Populations." Thèse, Université d'Ottawa / University of Ottawa, 2011. http://hdl.handle.net/10393/20478.
Повний текст джерелаVestin, Albin, and Gustav Strandberg. "Evaluation of Target Tracking Using Multiple Sensors and Non-Causal Algorithms." Thesis, Linköpings universitet, Reglerteknik, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-160020.
Повний текст джерелаMiller, Erik G., Kinh Tieu, and Chris P. Stauffer. "Learning Object-Independent Modes of Variation with Feature Flow Fields." 2001. http://hdl.handle.net/1721.1/6659.
Повний текст джерелаHedrich, M., M. Bloj, and A. I. Ruppertsberg. "Color constancy improves for real 3D objects." 2009. http://hdl.handle.net/10454/6011.
Повний текст джерелаHedrich, Monika, Marina Bloj, and Alexa I. Ruppertsberg. "Color constancy improves for real 3D objects." 2009. http://hdl.handle.net/10454/4722.
Повний текст джерелаIn this study human color constancy was tested for two-dimensional (2D) and three-dimensional (3D) setups with real objects and lights. Four different illuminant changes, a natural selection task and a wide choice of target colors were used. We found that color constancy was better when the target color was learned as a 3D object in a cue-rich 3D scene than in a 2D setup. This improvement was independent of the target color and the illuminant change. We were not able to find any evidence that frequently experienced illuminant changes are better compensated for than unusual ones. Normalizing individual color constancy hit rates by the corresponding color memory hit rates yields a color constancy index, which is indicative of observers¿ true ability to compensate for illuminant changes.
Bloj, Marina, D. Brainard, L. Maloney, C. Ripamonti, K. Mitha, R. Hauck, and S. Greenwald. "Measurements of the effect of surface slant on perceived lightness." 2009. http://hdl.handle.net/10454/2723.
Повний текст джерелаWhen a planar object is rotated with respect to a directional light source, the reflected luminance changes. If surface lightness is to be a reliable guide to surface identity, observers must compensate for such changes. To the extent they do, observers are said to be lightness constant. We report data from a lightness matching task that assesses lightness constancy with respect to changes in object slant. On each trial, observers viewed an achromatic standard object and indicated the best match from a palette of 36 grayscale samples. The standard object and the palette were visible simultaneously within an experimental chamber. The chamber illumination was provided from above by a theater stage lamp. The standard objects were uniformly-painted flat cards. Different groups of naïve observers made matches under two sets of instructions. In the Neutral Instructions, observers were asked to match the appearance of the standard and palette sample. In the Paint Instructions, observers were asked to choose the palette sample that was painted the same as the standard. Several broad conclusions may be drawn from the results. First, data for most observers were neither luminance matches nor lightness constant matches. Second, there were large and reliable individual differences. To characterize these, a constancy index was obtained for each observer by comparing how well the data were accounted for by both luminance matching and lightness constancy. The index could take on values between 0 (luminance matching) and 1 (lightness constancy). Individual observer indices ranged between 0.17 and 0.63 with mean 0.40 and median 0.40. An auxiliary slant-matching experiment rules out variation in perceived slant as the source of the individual variability. Third, the effect of instructions was small compared to the inter-observer variability. Implications of the data for models of lightness perception are discussed.
Hesse, Constanze [Verfasser]. "The use of visual information when grasping objects / vorgelegt von Constanze Hesse." 2008. http://d-nb.info/989391019/34.
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