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Influencia dos ingredientes utilizados no processo de marinação sobre a aparencia global de lagarto (M. semitendinosus) bovino marinado; Influence of the ingredientes used in the marination process on the global appearance of enhanced eye round (M. semitendinosus) beef

Bruce Fonseca Mota
Fonte: Biblioteca Digital da Unicamp Publicador: Biblioteca Digital da Unicamp
Tipo: Dissertação de Mestrado Formato: application/pdf
Publicado em 27/07/2005 Português
Relevância na Pesquisa
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O presente trabalho foi dividido em duas etapas. Na primeira etapa avaliou-se o efeito dos ingredientes (sal, tripolifosfato de sódio, vinagre, alho e cebola em pó e maltodextrina), presentes em diferentes formulações de salmoura de marinação sobre aparência de lagarto (M. semitendinosus) bovino injetado com estas salmouras segundo um planejamento fatorial fracionário 2 5-1. Também foramanalisados o rendimento do processo de marinação e o pH dos cortes cárneos, para que se tentasse correlacioná-los com parâmetros de cor L, a e b dos mesmos. Nos níveis estudados, constatou-se que o sal e o tripolifosfato de sódio apresentaram efeito estaticamente significativo (p<0,05) sobre o rendimento do processo de marinação, melhorando-o. Quando estes dois ingredientes estiveram presentes conjuntamente na salmoura de marinação, os redimentos foram ainda melhores. Além, disso o tripolifosfato de sódio também mostrou desempenhar efeito sobre o pH (p<0,05) das peças de lagarto bovino injetadas, aumentando-o. O sal e o tripolifosfato de sódio também apresentaram efeito estaticamente significativo, sobre o parâmentro de cor L (p<0,05), sendo que cortes cárneos marinados com salmoura contendo estes ingredientes ficaram maisescuros (menorL). Existiu...

Semi-automatic determination of detailed vertebral shape from lumbar radiographs using active appearance models

Roberts, M. G.; Oh, T.; Pacheco, E. M. B.; Mohankumar, R.; Cootes, T. F.; Adams, J. E.
Fonte: Springer; London Publicador: Springer; London
Tipo: Artigo de Revista Científica
Português
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The vertebral endplates in lumbar radiographs were located by a semi-automatic annotation method using statistical shape models. Vertebral fractures are common osteoporotic fractures, but current quantitative detection methods (morphometry) lack specificity. We have previously developed more specific quantitative classifiers of vertebral fracture using shape and appearance models. This method has only been applied to DXA vertebral fracture assessment (VFA) images and not to spinal radiographs. The classifiers require a detailed annotation of the outline of the vertebral endplate, so we investigated the application of similar semi-automated annotation methods to lumbar radiographs as the initial step in the generalisation of the statistical classifiers used in VFA images. The vertebral body outlines in a training set of 670 lumbar radiographs were manually annotated by expert radiologists. This training set was used to build statistical models of vertebral shape and appearance using triplets of vertebrae. In order to segment vertebrae, the models were refitted using a sequence of active appearance models of vertebral triplets, using a miss-40-out train/test cross-validation experiment. The accuracy was evaluated against the manual annotation and analysed by fracture grade. Good accuracy was obtained for normal vertebrae (0.82 mm) and fracture grades 1 and 2 (1.19 mm)...

Physical appearance and intimate friendship in adolescence: A study using a portuguese college student sample

Cordeiro, Raul
Fonte: Repositório Comum de Portugal Publicador: Repositório Comum de Portugal
Tipo: Artigo de Revista Científica
Publicado em //2005 Português
Relevância na Pesquisa
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A group of students enrolled in the 12th year of education was asked to answer a direct application questionnaire containing the following measures: Intimate Friendship Scale (IFS)(Sharabany, 1994), The Self-Perception Profile for College Students (Neemann & Harter,1986) adapted for the Portuguese population (Ribeiro, 1994) and Family Social Notation -Adapted Graffar, adapted from the original (Graffar, 1956). The values of Intimate Friendship were found to be higher for girls and the values of Perception of Physical Appearance were higher for boys.

Models of Visual Appearance for Analyzing and Editing Images and Videos

Sunkavalli, Kalyan
Fonte: Harvard University Publicador: Harvard University
Tipo: Thesis or Dissertation
Português
Relevância na Pesquisa
36.533347%
The visual appearance of an image is a complex function of factors such as scene geometry, material reflectances and textures, illumination, and the properties of the camera used to capture the image. Understanding how these factors interact to produce an image is a fundamental problem in computer vision and graphics. This dissertation examines two aspects of this problem: models of visual appearance that allow us to recover scene properties from images and videos, and tools that allow users to manipulate visual appearance in images and videos in intuitive ways. In particular, we look at these problems in three different applications. First, we propose techniques for compositing images that differ significantly in their appearance. Our framework transfers appearance between images by manipulating the different levels of a multi-scale decomposition of the image. This allows users to create realistic composites with minimal interaction in a number of different scenarios. We also discuss techniques for compositing and replacing facial performances in videos. Second, we look at the problem of creating high-quality still images from low-quality video clips. Traditional multi-image enhancement techniques accomplish this by inverting the camera’s imaging process. Our system incorporates feature weights into these image models to create results that have better resolution...

A Perceptual Grouping Hierarchy for Appearance-Based 3D Object Recognition

Nelson, Randal C. ; Selinger, Andrea
Fonte: University of Rochester. Computer Science Department. Publicador: University of Rochester. Computer Science Department.
Tipo: Relatório
Português
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In this report we consider the problem of 3D object recognition, and the role that perceptual grouping processes must play. In particular, we argue that a single level of perceptual grouping is inadequate, and that reliance on a single level of grouping is responsible for the specific weaknesses of several well-known recognition techniques. Instead, we argue that recognition must utilize a hierarchy of perceptual grouping processes, and describe an appearance-based system that uses four distinct levels of perceptual grouping, the upper two novel, to represent 3D objects in a form that not only allows recognition, but reasoning about 3D manipulation of a sort that has been supported in the past only by 3D geometric models.

The Moderating Effects of Appearance Commentary on the Relationship Between Weight Status and Physical Activity Participation in Female College Students

Cline, Lindsay
Fonte: Brock University Publicador: Brock University
Tipo: Electronic Thesis or Dissertation
Português
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When looked at individually, overweight status and a higher frequency of negative appearance commentary (AC) are associated with lower physical activity (PA) levels. However, the combined effect has yet to be examined. The purpose of this study was to examine if the frequency of AC moderated the relationship between weight status and PA in college-aged females. No significant differences in PA levels (F(1,99)=2.41, p=.12) were found between the Never Overweight and Previously/Presently Overweight groups. Significant correlations existed for both negative AC (r=-.30, p=.00) and positive AC (r=.20, p=.05) with PA participation. AC did not significantly moderate the relationship between weight status and PA (F(2,95)=.65, p=.52, R2 adjusted=.13) as the interaction term did not account for any additional increase in variance (ΔR2=.01). Overall, AC frequency does not moderate the relationship between weight status and PA; other predictor variables should be explored.

The Influence of Appearance-related Possible Selves on Disordered Eating

Lucette, Aurelie
Fonte: FIU Digital Commons Publicador: FIU Digital Commons
Tipo: Artigo de Revista Científica Formato: application/pdf
Português
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This study explores the potential relationship between disordered eating and appearance-related possible selves. The sample consisted of 293 female college students (mean age=22). Participants were administered interviews consisting of demographic information, the Possible Selves Interview, the Eating Attitudes Test-26, The Physical Self Description Questionnaire, and the Rosenberg Self-Esteem Scale. More than half of the participants reported an appearance-related possible self (n=154). As expected, disordered eating scores were found to be higher for participants who reported an appearance-related possible self: t(288)=-3.04, p

Social acceptability of dental appearance and benefits of fixed orthodontic treatment: a 17-year observational cohort study

Arrow, P.; Brennan, D.; Spencer, A.
Fonte: AAPHD National Office Publicador: AAPHD National Office
Tipo: Artigo de Revista Científica
Publicado em //2012 Português
Relevância na Pesquisa
36.308171%
OBJECTIVES: This study reports on the social acceptability of dental appearance and benefits of fixed orthodontic treatment (FOT) among a cohort of 13-year-old adolescents in 1988/1989 followed through to age 30 years in 2005/2006. METHODS: Adolescents were categorized into nominal treatment need groups based on the dental aesthetic index (DAI) score at age 13 (DAI: ≤ 25 "No Need"; 26-30, "Elective"; 31-35, "Desirable"; and ≥36, "Mandatory"). At age 30, calibrated examiners again assessed the DAI of traced participants. A reduction in the baseline DAI score of at least five units was considered a benefit. The change in DAI scores was examined by receipt of FOT. The number needed to treat (NNT) was estimated as an indicator of the efficacy of FOT. RESULTS: Of the 421 cohort participants examined at follow-up, 148 had undergone FOT; 34 percent of those with FOT were classified at age 13 as "No Need" (n = 50); 21 percent as "Elective" (n = 31); 17 percent as "Desirable" (n = 26); and 28 percent as "Mandatory Need" (n = 41). The DAI score reduced significantly for those with and without FOT. The NNT from FOT for those individuals in the "No Need" category was 17 [95 percent confidence interval (CI) - 26-6]; "Elective" 6 (95 percent CI - 27-3); "Desirable" 5 (95 percent CI 3-51) and "Mandatory Need" 14 (95 percent CI - 16-4). CONCLUSIONS: FOT provided a significant benefit only for individuals in the "Desirable" group at age 13. FOT appeared to offer little long-term benefits in the social acceptability of dental appearance for the majority of individuals who underwent FOT.; Peter Arrow...

A survey of appearance models in visual object tracking

Li, X.; Hu, W.; Shen, C.; Zhang, Z.; Dick, A.; Van Den Hengel, A.
Fonte: Association for Computing Machinery Inc Publicador: Association for Computing Machinery Inc
Tipo: Artigo de Revista Científica
Publicado em //2013 Português
Relevância na Pesquisa
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Visual object tracking is a significant computer vision task which can be applied to many domains, such as visual surveillance, human computer interaction, and video compression. Despite extensive research on this topic, it still suffers from difficulties in handling complex object appearance changes caused by factors such as illumination variation, partial occlusion, shape deformation, and camera motion. Therefore, effective modeling of the 2D appearance of tracked objects is a key issue for the success of a visual tracker. In the literature, researchers have proposed a variety of 2D appearance models. To help readers swiftly learn the recent advances in 2D appearance models for visual object tracking, we contribute this survey, which provides a detailed review of the existing 2D appearance models. In particular, this survey takes a module-based architecture that enables readers to easily grasp the key points of visual object tracking. In this survey, we first decompose the problem of appearance modeling into two different processing stages: visual representation and statistical modeling. Then, different 2D appearance models are categorized and discussed with respect to their composition modules. Finally, we address several issues of interest as well as the remaining challenges for future research on this topic. The contributions of this survey are fourfold. First...

Does malocclusion influence the adolescent's satisfaction with appearance? A cross-sectional study nested in a Brazilian birth cohort

Glazer De Anselmo Peres, K.; Barros, A.; Anselmi, L.; De Anselmo Peres, M.; Barros, F.
Fonte: Blackwell Munksgaard Publicador: Blackwell Munksgaard
Tipo: Artigo de Revista Científica
Publicado em //2008 Português
Relevância na Pesquisa
36.50055%
OBJECTIVES: To test whether malocclusion had an impact on adolescents’ appearance satisfaction regardless of other physical aspects. METHODS: A cross-sectional study nested in a birth cohort study was carried out in Pelotas, Brazil. A random sample of 900 15-year-old adolescents was selected. WHO criteria were used to define malocclusion and a questionnaire was administered including self-reported skin colour and appearance satisfaction. Dental caries were assessed. Height and weight were measured and body mass index calculated. Data concerning gender and socioeconomic characteristics were obtained from the cohort’s perinatal study. Adjusted analyses including all confounding variables investigated were performed using Poisson regression with robust variance in order to identify the potential risk factors for appearance dissatisfaction. All analyses were carried out separately by gender. RESULTS: The sample included 867 individuals, 54.1% men. The prevalence of moderate or severe malocclusion was 30.6% (95% CI: 26.5–34.7) among boys, and 32.8% (95% CI: 28.2–37.4) among girls (P ¼ 0.524). Dissatisfaction with appearance was reported by 29.8% of the boys and by 46.5% of the girls (P < 0.001). A positive association between malocclusion and appearance dissatisfaction...

The Development of Structure and Centrality in the Self System: Implications for Appearance Concerns

Hoy, Melanie B.
Fonte: Universidade Duke Publicador: Universidade Duke
Tipo: Dissertação Formato: 730925 bytes; application/pdf
Publicado em 22/04/2008 Português
Relevância na Pesquisa
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Appearance-related self worth occupies a central role in the self-structure of many individuals. While many social psychological theories may be employed to understand the role of appearance in individuals' self-structures, thus far developmental theories have not been widely used to understand how these structures come to be and how they change throughout development. The current project integrates social and developmental theories of self to understand the role that important domains may play in the development of self-structure. Participants between the ages of 9 and 21 completed a set of questionnaires assessing various self-concept and self-esteem related variables to address these questions, allowing a cross-sectional view of the development of self-structure. In addition, multiple regression analyses were used to address several research questions, and five clear patterns emerged. First, connections between domains of self increase developmentally, a finding which replicates and adds depth to previous self research. Second, discrepancies between how individuals see themselves and how they would ideally like to be are positively related to how connected that domain is within the self-structure. Third, malleability of self worth is negatively related to domain connectedness such that higher levels of connectedness are associated with decreased malleability of self feelings in response to challenges to self-esteem. Fourth...

The Intergenerational Transmission and "Moralization" of Appearance and Achievement Values and Their Influence on Children's Contingencies of Self-Worth

Quinlan, Nicole Polanichka
Fonte: Universidade Duke Publicador: Universidade Duke
Tipo: Dissertação Formato: 18732285 bytes; application/pdf
Publicado em 21/02/2008 Português
Relevância na Pesquisa
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Children's internalization of parental values is differentially influenced by discipline and parent-child relationship quality. Beyond simply affecting values, parents can influence the development of underlying belief structures children use to make sense of behaviors and attributes. Parental values might lead children to experience domains as differentially important and then use this structure when building and judging the content of their self-concept. The intergenerational transmission of values may therefore also differentially influence appraisals of the self. Crocker and colleagues (e.g. Crocker, Sommers, & Luhtanen, 2002) present a model of self-esteem that emphasizes "contingencies of self-worth", which are domains on which individuals stake self-esteem. Although the existence of contingencies of self-worth (CSW) has been supported, their origin has not been addressed. This dissertation is a preliminary investigation into the origins of CSW. It is proposed that early adolescents' CSW will reflect parents' values in domains that carry a 'moral' weight due to parental socialization. The domains of physical appearance and academic achievements were of particular interest. Participants were 127 early adolescents (51% female) and their parents (102 mothers...

An investigation of the effect of image size on the color appearance of softcopy reproductions using a contrast matching technique

Nezamabadi, Mahdi; Montag, Ethan; Berns, Roy
Fonte: The International Society for Optical Engineering (SPIE) Publicador: The International Society for Optical Engineering (SPIE)
Tipo: Artigo de Revista Científica
Português
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36.308171%
Many art objects have a size much larger than their softcopy reproductions. In order to develop a multiscale model that accounts for the effect of image size on image appearance, a digital projector and LCD display were colorimetrically characterized and used in a contrast matching experiment. At three different sizes and three levels of contrast and luminance, a total of 63 images of noise patterns were rendered for both displays using three cosine log filters. Fourteen observers adjusted mean luminance level and contrast of images on the projector screen to match the images displayed on the LCD. The contrasts of the low frequency images on the screen were boosted while their mean luminance values were decreased relative to the smaller LCD images. Conversely, the contrast of projected high frequency images were reduced for the same images on LCD with a smaller size. The effect was more pronounced in the matching of projected image to the smaller images on the LCD display. Compared to the mean luminance level of the LCD images, a reduction of the mean luminance level of the adjusted images was observed for low frequency noise patterns. This decrease was more pronounced for smaller images with lower contrast and high mean luminance level.; "An investigation of the effect of image size on the color appearance of softcopy reproductions using a contrast matching technique...

Systems evaluation for computer graphics rendering of the total appearance of paintings

Chen, Lin
Fonte: Rochester Instituto de Tecnologia Publicador: Rochester Instituto de Tecnologia
Tipo: Tese de Doutorado
Português
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One of the challenges when imaging paintings is recording total appearance, that is, the object's color, surface microstructure (gloss), and surface macrostructure (topography). In this thesis, various systems were used to achieve this task, and a psychophysical paired comparison experiment was conducted to evaluate their performance. A pair of strobe lights arranged at 60° from the normal on either side of the painting captured color information where the strobes produced either directional or diffuse illumination geometry. By adding a third strobe, arranging them 120° apart annularly, and cross polarizing, diffuse color and surface normal maps were measured. A fourth strobe was added and the four lights were rearranged 90° apart annularly, capturing similar data. This system was augmented by two scanning linear light sources arranged perpendicularly, facilitating the measurement of spatially varying BRDF and specular maps. A laser scanner was used to capture surface macrostructure and was combined with the diffuse color maps from the four-light configuration. Finally, a dome illumination system was used with software developed by Conservation Heritage Imaging to produce color maps. In all, eight different configurations were achieved and used to image three small paintings with a range of appearance attributes. Twenty-five naive observers compared computer-graphic renderings to the actual painting and judged similarity in terms of total appearance...

Prediction of Munsell appearance scales using various color appearance models

Wyble, David; Fairchild, Mark
Fonte: John Wiley & Sons Publicador: John Wiley & Sons
Tipo: Artigo de Revista Científica
Português
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36.45175%
The chromaticities of the Munsell Renotation Dataset were applied to eight color-appearance models. Models used were: CIELAB, Hunt, Nayatani, RLAB, LLAB, CIECAM97s, ZLAB, and IPT. Models were used to predict three appearance correlates of lightness, chroma, and hue. Model output of these appearance correlates were evaluated for their uniformity, in light of the constant perceptual nature of the Munsell Renotation data. Some background is provided on the experimental derivation of the Renotation Data, including the specific tasks performed by observers to evaluate a sample hue leaf for chroma uniformity. No particular model excelled at all metrics. In general, as might be expected, models derived from the Munsell System performed well. However, this was not universally the case, and some results, such as hue spacing and linearity, show interesting similarities between all models regardless of their derivation; RIT community members may access full-text via RIT Libraries licensed databases: http://library.rit.edu/databases/; This work was done under the support of the Munsell Color Science Laboratory.

Testing colour-appearance models: Guidelines for coordinated research

Fairchild, Mark
Fonte: Wiley InterScience: Color Research & Application Publicador: Wiley InterScience: Color Research & Application
Tipo: Artigo de Revista Científica
Português
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36.54602%
CIE Technical Committee 1-34, Testing Colour-Appearance Models, was formed to investigate the performance of models based on their ability to predict the colour appearance of surface colours in simple and complex scenes under various illumination conditions. The work of this committee is limited only to the study of the colour appearance of surface colours and does not include the appearance of self-luminous colours, aperture colours, or comparison between different media or modes of appearance. This limitation has been imposed to find the best methods for predicting the colour appearance of objects while leaving complexities such as the cognitive interpretation of coloured stimuli for future work. The visual interpretation of non-object-colour stimuli is complex and ill-defined. The plan of work of TC1-34 includes the analysis of colour appearance models using available data and the publication of these guidelines for coordinated research for additional testing of colour-appearance models. The purpose of these guidelines is to encourage researchers around the world to perform experiments that will provide useful data for evaluating the performance of colour appearance models. The guidelines are not intended to limit researchers to a prescribed experimental design...

Image appearance modeling

Fairchild, Mark; Johnson, Garrett
Fonte: Society for Imaging Science and Technology Publicador: Society for Imaging Science and Technology
Tipo: Proceedings
Português
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Traditional color appearance modeling has recently matured to the point that available, internationally-recommended models such as CIECAM02 are capable of making a wide range of predictions to within the observer variability in color matching and color scaling of stimuli in somewhat simplified viewing conditions. It is proposed that the next significant advances in the field of color appearance modeling will not come from evolutionary revisions of these models. Instead, a more revolutionary approach will be required to make appearance predictions for more complex stimuli in a wider array of viewing conditions. Such an approach can be considered image appearance modeling since it extends the concepts of color appearance modeling to stimuli and viewing environments that are spatially and temporally at the level of complexity of real natural and man-made scenes. This paper reviews the concepts of image appearance modeling, presents iCAM as one example of such a model, and provides a number of examples of the use of iCAM in still and moving image reproduction.; Location: Santa Clara, California - Publisher book can be found here: http://www.imaging.org/store/physpub.cfm?seriesid=24&pubid=568

Meet iCAM: A Next-generation color appearance model

Fairchild, Mark; Johnson, Garrett
Fonte: Society for Imaging Science and Technology Publicador: Society for Imaging Science and Technology
Tipo: Proceedings
Português
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36.54602%
For over 20 years, color appearance models have evolved to the point of international standardization. These models are capable of predicting the appearance of spatially-simple color stimuli under a wide variety viewing conditions and have been applied to images by treating each pixel as an independent stimulus. It has been more recently recognized that revolutionary advances in color appearance modeling would require more rigorous treatment of spatial (and perhaps temporal) appearance phenomena. In addition, color appearance models are often more complex than warranted by the available visual data and limitations in the accuracy and precision of practical viewing conditions. Lastly, issues of color difference measurement are typically treated separate from color appearance. Thus, the stage has been set for a new generation of color appearance models. This paper presents one such model called iCAM, for image color appearance model. The objectives in formulating iCAM were to simultaneously provide traditional color appearance capabilities, spatial vision attributes, and color difference metrics, in a model simple enough for practical applications. The framework and initial implementation of the model are presented along with examples that illustrate its performance for chromatic adaptation...

The CIECAM02 color appearance model

Moroney, Nathan; Fairchild, Mark; Hunt, Robert; Li, Changjun; Luo, M. Ronnier; Newman, Todd
Fonte: Society for Imaging Science and Technology Publicador: Society for Imaging Science and Technology
Tipo: Proceedings
Português
Relevância na Pesquisa
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The CIE Technical Committee 8-01, color appearance models for color management applications, has recently proposed a single set of revisions to the CIECAM97s color appearance model. This new model, called CIECAM02, is based on CIECAM97s but includes many revisions1-4 and some simplifications. A partial list of revisions includes a linear chromatic adaptation transform, a new non-linear response compression function and modifications to the calculations for the perceptual attribute correlates. The format of this paper is an annotated description of the forward equations for the model.; Location: Scottsdale, Arizona - Publishers book can be found (out of print): http://www.imaging.org/store/physpub.cfm?seriesid=4&pubid=283

Preconceito de marca etnografia e relações raciais; Prejudice based on appearance ethnography and racial relations

Cavalcanti, Maria Laura Viveiros de Castro
Fonte: Universidade de São Paulo. Faculdade de Filosofia, Letras e Ciências Humanas Publicador: Universidade de São Paulo. Faculdade de Filosofia, Letras e Ciências Humanas
Tipo: info:eu-repo/semantics/article; info:eu-repo/semantics/publishedVersion; ; ; ; ; Formato: application/pdf
Publicado em 01/05/1999 Português
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Este artigo analisa a noção de preconceito de marca proposta por Oracy Nogueira para a compreensão do racismo brasileiro. É, ao mesmo tempo uma forma de classificação social baseada na aparência racial e uma forma de discriminação na qual o sistema social pretere a população de cor, ao invés de excluí-la e concebê-la como um grupo em separado. Esse tipo de preconceito racial é contraposto ao preconceito de origem, característico do racismo desenvolvido pela sociedade norte-americana. O artigo examina o contexto intelectual de produção dessa noção, chamando atenção para a importante presença da tradição etnográfica, de cunho antropológico, na formação em ciências sociais propiciada pela Escola Livre de Sociologia e Política (São Paulo) nas décadas de 1940-1950. Enfatiza também a originalidade e atualidade dessa noção, que sugere a visão do racismo como um sistema cultural.; This paper analyses the notion of prejudice based on appearance developed by Oracy Nogueira for the understanding of Brazilian racism. Prejudice based on appearance indicates a form of social classification based on racial stereotypes which is at the same time a form of discrimination. As such, it implies a social system that permanently delays colored people's social opportunities...