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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
121

Modulating MAEs : critical factors, and the effects of selective attentional processing on adaptation to motion stimuli

Georgiades, Michael S. January 1998 (has links)
No description available.
122

The effect of blur on visual selective attention

Peterson, Jared January 1900 (has links)
Master of Science / Department of Psychology / Lester C. Loschky / The effect of blur/clarity contrast on selective attention was investigated in terms of how unique blur and/or clarity guides attention. Visual blur has previously been suggested to be processed preattentively using a dual-task paradigm (Loschky et al., 2014). Experiments 1 and 2 used rotated L and T visual search tasks with blur/clarity contrast being manipulated such that it was non-predictive of the target’s location. Each experiment was preceded by a legibility control study such that blurred and clear letters had similar accuracy and reaction times. This allowed for the results to be interpreted as changes in attention rather than difficulty identifying the letters because they were blurry. Results suggest that when non-predictive of target location, unique blur plays a passive role in selective attention in which it is ignored, neither capturing nor repelling attention to its spatial location, whereas unique clarity captures attention. The findings provide insight to the role that blur/clarity contrast plays in guiding visual attention, which can be implemented in visual software to help guide selective attention to critical regions of interest displayed on a computer screen.
123

Generalizing recognition from familiar to novel views. / Generalizing recognition

January 2001 (has links)
Wong Chun Nang. / Thesis (M.Phil.)--Chinese University of Hong Kong, 2001. / Includes bibliographical references (leaves 56-58). / Abstracts in English and Chinese.
124

Anomaly Handling in Visual Analytics

Nguyen, Quyen Do 23 December 2007 (has links)
"Visual analytics is an emerging field which uses visual techniques to interact with users in the analytical reasoning process. Users can choose the most appropriate representation that conveys the important content of their data by acting upon different visual displays. The data itself has many features of interest, including clusters, trends (commonalities) and anomalies. Most visualization techniques currently focus on the discovery of trends and other relations, where uncommon phenomena are treated as outliers and are either removed from the datasets or de-emphasized on the visual displays. Much less work has been done on the visual analysis of outliers, or anomalies. In this thesis, I will introduce a method to identify the different levels of “outlierness” by using interactive selection and other approaches to process outliers after detection. In one approach, the values of these outliers will be estimated from the values of their k-Nearest Neighbors and replaced to increase the consistency of the whole dataset. Other approaches will leave users with the choice of removing the outliers from the graphs or highlighting the unusual patterns on the graphs if points of interest lie in these anomalous regions. I will develop and test these anomaly handling methods within the XMDV Tool."
125

Vitrina, design e emoção : uma investigação sobre a percepção visual feminina /

Marson, Elissandra. January 2011 (has links)
Orientador: Paula da Cruz Landim / Banca: Monica Cristina de Moura / Banca: Miriam Mirna Korolkovas / Resumo: No cenário atual, muitas estratégias são usadas para atrair o consumidor, que deixou de suprir apenas, as necessidades consideradas naturais para satisfazer desejos e necessidades correspondentes a expectativas sociais. Diante desse consumidor ávido por novidades, o comércio estimula seu ímpeto para o consumo, fazendo uso da comunicação para atingir seus objetivos. Uma das mídias utilizadas, a vitrina, é o objeto deste estudo, aqui apresentada como uma mídia de comunicação com grande capacidade de atrair o consumidor. Objeto de estudos restritos, porém, com grande capacidade de persuasão, a vitrina investiga esta pesquisa que tem o objetivo de avaliar o papel do design em seu planejamento como atrativo para valorizar a imagem do produto e do ponto de venda, agregando valor na forma de expô-los ao consumidor. O objetivo específico visa relacionar o impacto emocional que sua composição, com o uso de conceitos e técnicas do design, pode proporcionar ao público, em específico o feminino. Para isso, optou-se por uma investigação bibliográfica e de campo. Compreende uma pesquisa exploratória, com abordagem qualitativa e por raciocínio indutivo. Os dados obtidos geraram informações que contribuem como ferramentas no planejamento visual da vitrina. Os conceitos do design, da emoção e da percepção visual, articulados por profissionais capacitados por meio do ensino de design, permitem que a informação transmitida pelas vitrinas seja compreendida pelos consumidores / Abstract: In the present scenery, many strategies are used to attract the consumers, which stopped supplying just the necessities considered natural to satisfy desires and the necessities towards the social expectations. Considering this eager consumer of news, the commerce stimulates his willing for consumption, making use of the communication to reach its aims. One of the used media, the window display, is the object of this study, here presented as a communication media with a great capacity to attract the shopper. Object of restrict studies, however, with a great persuasion power, the window display instigates this research that has the aim of evaluating the role of the design in its planning as an attractive to worth the image of the product and the store as well, attributing value in the way it is displayed to the shopper. The specific objective aims to connect the emotional impact that is composition, with the design's concepts and technical, can provide to the public, mainly the female one. That's why the option was to use both a bibliographic and a camping research. It concerns an exploratory research with qualitative approach and inductive throught. The obtained data created information that contributes a tools in the visual planning of the window display. The concepts of the design, emotion and visual perception said by the most capable professionals in design teaching, allow that the information transmited by the window display is understood by the shoppers / Mestre
126

A qualidade visual dos centros de comércio e a legibilidade dos anúncios comerciais

Portella, Adriana Araújo January 2003 (has links)
Esta pesquisa investiga os efeitos dos anúncios comerciais sobre a qualidade visual dos centros de comércio e sobre a legibilidade das mensagens veiculadas por esses elementos, segundo a percepção do pedestre. O objetivo central é determinar subsídios teóricos que possam fundamentar diretrizes a fixação de anúncios comerciais no meio urbano, de modo a garantir a qualidade visual do espaço construído e a legibilidade das mensagens. Adota-se a cidade de Pelotas (RS) como objeto de estudo por possuir em seu centro de comércio questões comuns à maioria das cidades brasileiras: significativa concentração de anúncios comerciais sobre conjuntos arquitetônicos, dentre os quais há bens de interesse histórico e cultural, os quais estão sendo prejudicados em virtude de anúncios comerciais fixados sobre suas fachadas. Os métodos de coleta de dados aplicados neste estudo fazem parte dos utilizados na área de pesquisa relativa ao Ambiente e Comportamento. Fundamentado na natureza das informações necessárias e nas particularidades relativas aos estudos urbanos, os métodos de coleta de dados são sistematizados em duas etapas: o levantamento de arquivo e o levantamento de campo. Esse último divide-se em observações das características físicas, levantamento físico, representação do ambiente urbano e questionários. Cabe destacar que nesta investigação a análise e a comparação dos modos de percepção do ambiente por distintos indivíduos se faz necessária, à medida que os centros de comércio são áreas freqüentadas por diversos tipos de transeuntes. Quanto a isso, define-se ao estudo quatro grupos de usuários: os arquitetos e urbanistas, os publicitários, os comerciantes e os consumidores. Os resultados desta investigação demonstram que os anúncios comerciais quando dispostos desordenadamente sobre o ambiente prejudicam a qualidade visual das cenas urbanas, bem como reduzem o grau de legibilidade das mensagens veiculadas por anúncios comerciais. Fica constatado que não podem ser pensadas diretrizes, relacionadas às características físicas dos anúncios comerciais, que ignorem o aspecto formal do conjunto arquitetônico: é necessário haver normas que visem à ordenação da aparência do ambiente, as quais contemplem os aspectos formais dos anúncios comerciais e das construções. Espera-se que os dados encontrados despertem o interesse ao desenvolvimento de outros estudos que abordem essa problemática, bem como de políticas urbanas de reordenamento e de preservação da aparência dos centros de comércios.
127

Visual interpretation : Intent and response

Sandberg, Leo January 2013 (has links)
This paper explores artistic interpretation of a script's theme to its visual, estetic representation and meaning. The purpose is to reflect on the topic, and to enhance our understanding of how an interpretation from written intention to visual representation can form. The aritstic production used in this artistic research is an animated feature film for children 10+ and the character design of its lead female character.
128

Task-dependent transfer of perceptual to memory representations during delayed spatial frequency discrimination

Lalonde, Jasmin. January 2001 (has links)
No description available.
129

Unified percepts in three-dimensional space derived from motion in depth or rotation in depth

Lee, Chak-pui, Terence, January 2007 (has links)
Thesis (Ph. D.)--University of Hong Kong, 2007. / Title proper from title frame. Also available in printed format.
130

Visual attention and awareness : lessons from the damaged and intact brain

Ritchie, Kay Laird January 2012 (has links)
The studies presented in this thesis address current issues in visual attention and awareness research. The first three experimental chapters investigate saccadic remapping of location and orientation information, with a particular focus on saccadic remapping in hemianopia. The results suggest that residual visual abilities in the blind field are necessary in order for a stimulus to be remapped from the blind to the sighted visual field. The results also suggest that remapping underpins our ability to maintain attention at specific spatiotopic locations across a series of saccades. Further evidence from both hemianopic and neurologically intact participants suggest that some orientation information is remapped across saccades. The second three experimental chapters investigate binocular rivalry in previously unstudied paradigms. The results show that the established face dominance and emotion dominance effects in binocular rivalry persist when the stimuli are viewed in peripheral vision. The results also suggest that a stable image presented in the opposite hemifield from the rival pair does not affect the perceived dominance of the separate images within the rival pair, but that the percepts in the rival pair tend to synchronise with those of a second rival pair presented in the opposite hemifield. Using Diaz-Caneja stimuli (half of each image presented to each eye) the results of the final experiments suggest a combination of eye- and object-dominance mechanisms in binocular rivalry in both the intact and the split-brain.

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