Digital preservation of Brazilian indigenous artworks: Generating high quality textures for 3D models     

Beatriz Trinchão Andrade  Olga Regina Pereira Bellon  Luciano Silva  Alexandre Vrubel 《Journal of Cultural Heritage》2012,13(1):28-39

Three-dimensional (3D) digital preservation aims at generating 3D models of objects that have cultural or scientific value. It allows realistic visualization of objects through virtual museums or scientific applications, and the restoration of the preserved object in case of natural wear or accidents. This work contributes to this research area by presenting a method to improve color texture quality of 3D models obtained from color and depth images of a laser scanner. Although this device offers precise depth information, the resulting color information is still poor and limits the generation of realistic textures. Our approach is to capture photographs of the object with a high-resolution digital camera and use them to generate a new color texture for the 3D model. Our work proposes a practical technique, easy to replicate, to generate high quality textures for 3D models from photographs. The method is composed by three main steps: (1) calibration of the image acquisition devices; (2) data acquisition; and (3) texture generation. In this paper, we detail our color texture generation method and apply it on the digital preservation of many artworks made by native Brazilians (indians) from the Wauja and Karaja communities. These indigenous communities are acknowledged as great ceramic artists, each bearing their own main themes, using a very rich symbolism in their paintings. Their artworks represent important aspects of the native South American culture and their digital preservation is motivated by three main reasons: (1) their fragility; (2) the paintings loose their original appearance with time; and (3) the possibility of extinction of these communities. We present several results of preserved artworks with enhanced quality realistic texture maps. Also, we present a methodology to analyze the quality and accuracy of texture maps. The resulting 3D models can be visualized through a tool we developed to support the virtual exhibit of 3D preserved heritage.  相似文献   

3D preserving xviii century barroque masterpiece: Challenges and results on the digital preservation of Aleijadinho's sculpture of the Prophet Joel     

Beatriz Trinchão Andrade  Caroline Mazetto Mendes  Jurandir de Oliveira Santos  Olga Regina Pereira Bellon  Luciano Silva 《Journal of Cultural Heritage》2012,13(2):210-214

We present our recent efforts in the digital preservation of a set of baroque sculptures made by Antônio Francisco Lisboa, known as O. Aleijadinho, which is an important American baroque artist. The set was made in the beginning of the xix century and is composed of 12 near real sized sculptures, hand-carved in soapstone. These sculptures represent 12 of the 16 prophets from the Holy Bible and are part of a UNESCO World Heritage Site. Our group has been collaborating with UNESCO in a project that aims to preserve all these statues. We hereby present our initial efforts, consisting of the 3D digital preservation of the Prophet Joel sculpture. We developed a complete 3D digital preservation pipeline composed of four main stages: data acquisition, 3D reconstruction, texture generation and 3D model visualization. By evaluating our results in this first sculpture, we discuss the improvements we conceived before applying our pipeline in the remaining ones. Finally, we present the 3D model of the Prophet which registers the sculpture's current state and will be used in restoration, research and educational activities. We believe this contribution may be useful to guide further research on similar scenarios, showing how to avoid some practical mistakes and achieve good results.  相似文献   

A look behind the curtain: the editorial board     

K. Brad Wray  Luciano Boschiero 《Metascience》2016,25(3):341-342

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Producing Whiteness: An exploration of working-class white men in two contexts1     

Lois Weis  Susan Lyons Lombardo 《Discourse: Studies in the Cultural Politics of Education》2002,23(1):5-25

In this essay we enter the terrain of 'whiteness' studies, drawing upon data gathered in two ethnographic investigations conducted in a large northeastern city in the United States. In the first study we focus on the ways in which whiteness among working-class men emerges in relation to a constructed 'other', in this case a black/Latino other who is held to have unpleasant characteristics. In the second, we problematize the idea that the white European self emerges necessarily in relation to that of a constructed 'dark other' by focusing on white working-class Irish adults who frequent an Irish community centre in the same city. We explore the ways in which the presence of particular spaces within which ethnic identities can flourish may blunt the effects of possible intergroup violence based on the production of a white identity and at the same time potentially encourage a multi-racial set of political coalitions.  相似文献   

One Tool for Many Tasks: Integrating Ipads into the Third-Year Learning Experience     

Nancy T. Lombardo  Amy Honisett 《Medical reference services quarterly》2013,32(1):17-28

Librarians worked with faculty in the School of Medicine to integrate iPad tablets into the third-year pediatric clerkship. The use of the technology allowed students instant access to information in the clinical setting and simplified the management of the course. In addition, a variety of tablet and e-reader devices were purchased for patron check-out. Library management of the devices is discussed. Use of the devices is described, and student reactions are presented.  相似文献   

Relationship between physical activity,physical fitness and multiple metabolic risk in youths from Muzambinho's study     

João Paulo Dos Anjos Souza Barbosa  Luciano Basso  André Seabra  Antonio Prista  Go Tani  José António Ribeiro Maia 《European Journal of Sport Science》2016,16(5):618-623

Negative associations between physical activity (PA), physical fitness and multiple metabolic risk factors (MMRF) in youths from populations with low PA are reported. The persistence of this association in moderately-to highly active populations is not, however, well established. The aim of the present study was to investigate this association in a Brazilian city with high frequency of active youths. We assessed 122 subjects (9.9?±?1.3 years) from Muzambinho city. Body mass index, waist circumference, glycaemia, cholesterolaemia, systolic and diastolic blood pressures were measured. Maximal handgrip strength and one-mile walk/run test were used. Leisure time PA was assessed by interview. Poisson regression was used in the analysis. The model explained 11% of the total variance. Only relative muscular strength and one-mile walk/run were statistically significant (p?相似文献   

A Look into the Future Impact of ICT on Our Lives     

Luciano Floridi 《The Information Society》2007,23(1):59-64

This paper may be read as a sequel to a 1995 paper, published in this journal, in which I predicted what sort of transformations and problems were likely to affect the development of the Internet and our system of organized knowledge in the medium term. In this second attempt, I look at the future developments of information and communication technologies and try to estimate what their impact on our lives will be. The forecast is that, in information societies, the threshold between online and offline will soon disappear, and that once there is no difference, we shall become not cyborgs but rather inforgs, that is, connected informational organisms.  相似文献   

Revisiting Patterson's paradigm: gaze behaviors in deaf communication     

Luciano JM 《American annals of the deaf》2001,146(1):39-44

Eye contact and eye gaze behaviors within communication contexts are considered vital to clear linguistic transmission. Although much research has been done on eye contact and gaze behaviors, surprisingly little literature exists in this area concerning deaf populations. Due to linguistic necessity, certain factors influencing gaze behaviors during communication will differ between hearing and deaf groups. The present article explains a sequential model of eye gaze and eye contact behaviors (Patterson, 1982) developed and researched among hearing populations and explores possible similarities and differences in these behaviors in deaf people. It is found that characterizations of eye contact and eye gaze behaviors applied to hearing populations are not completely applicable to deaf groups. Empirical research is needed to validate the ideas presented here, and future research directions are indicated.  相似文献   

An Analysis of the Nature of the Relationship Between SAT Scores and Financial Literacy     

Michael J. Roszkowski  Miguel Glatzer  Richard Lombardo 《Journal of Business & Finance Librarianship》2015,20(1-2):66-94

The 2008 Jump$tart study, assessing the financial literacy of American high school seniors and college students, reported an association between self-reported SAT scores and financial literacy scores. In the present study, an even stronger relationship was found between actual SAT scores and financial literacy scores from an abbreviated version of the Jump$tart test. Given that SAT scores are known to be correlated to parental income, also investigated was whether the relationship exists because the SAT serves as a proxy for parental income. By means of multiple regressions, it was determined that this relationship cannot be entirely explained by parental income.  相似文献   

Galileo’s Secrets     

Luciano Boschiero 《Metascience》2007,16(1):93-96

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