scholarly journals Retrieving the ancient colours: artistic practice as a tool for heritage reconstruction

2020 ◽  
Vol 2020 (28) ◽  
pp. 282-287
Author(s):  
Abigail Trujillo Vazquez ◽  
Susanne Klein ◽  
Xavi Aure Calvet ◽  
Carinna Parraman
Keyword(s):  
Digital Technology ◽  
Imaging Techniques ◽  
Surface Shape ◽  
Physical Parameters ◽  
Artistic Practice ◽  
Intaglio Printing ◽  
Maya Area ◽  
Printing Techniques ◽  
Reflectance Transformation Imaging ◽  
Printing Method

The frieze of the Palace of the stuccoes, dated between the 5 th and 6 th century BC, was a polychrome Maya relief discovered in the 1907 in Yucatán, Mexico. It was documented in watercolours and hand tinted photographs by Adela Breton. After years of exposure to the harsh environmental conditions of the Maya area, the colours and the stucco relief disappeared. The aim of the project is to develop a hybrid digital-analogue printing method for reconstructing the appearance of the original polychrome relief based on digitised hand-made records.<br/> A description of the process to produce full colour images combining digital and photomechanical printing is provided. Using photopolymer plates, an intaglio printing process has been used to produce colour images, whilst inverse relief plates have been created based on height maps to transfer a positive embossing on paper when applying pressure on a printing press. The influence of physical parameters related to the appearance is studied. Reflectance Transformation Imaging was carried out to record the colour and surface shape of the prints. Measurements of gloss were made on relief inkjet prints and intaglio prints on paper to compare the outcomes of commercial 2.5D print and the method proposed here.<br/> By modifying an analogue process with digital technology, it is possible to incorporate ancient materials to the printmaking process and therefore approach naturally the appearance of the original. On the other hand, incorporating imaging techniques and quality measurements enables to improve the quality in analogue printing techniques.

scholarly journals Who’s Afraid of the Audience? Digital and Post-Digital Perspectives on Aesthetics

2014 ◽  
Vol 3 (1) ◽  
pp. 120-130 ◽  
Author(s):  
Lotte Philipsen
Keyword(s):  
Immanuel Kant ◽  
Digital Technology ◽  
Aesthetic Experience ◽  
The Other ◽  
Artistic Practice ◽  
Works Of Art ◽  
Practical Analysis ◽  
The Way

This article analyses how works of art that make use of or refer to digital technology can be approached, analysed, and understood aesthetically from two different perspectives. One perspective, which I shall term a ‘digital’ perspective, mainly focuses on poetics (or production) and technology when approach- ing the works, whereas the other, which I shall term a ‘post-digital’ perspective, focuses on aesthetic experience (or reception) when approaching the works. What I tentatively and for the purpose of practical analysis term the ‘digital’ and the ‘post-digital’ perspectives do not designate two different sets of concrete works of art or artistic practice and neither do they describe different periods.[1] Instead, the two perspectives co-exit as different discursive positions that are concretely ex- pressed in the way we talk about aesthetics in relation to art that makes use of and/or refers to digital technology. In short: When I choose here to talk about a digital and a post-digital perspective, I talk about two fundamentally different ways of ascribing aes- thetic meaning to (the same) concrete works of art. By drawing on the ideas of especially Immanuel Kant and Dominic McIver Lopes, it is the overall purposes of this article to ana- lyse and compare how the two perspectives understand the concept of aesthetics and to discuss some of the implications following from these understandings. As it turns out, one of the most significant implications is the role of the audience. 

scholarly journals 3D Printing and NIR Fluorescence Imaging Techniques for the Fabrication of Implants

Materials ◽  
2020 ◽  
Vol 13 (21) ◽  
pp. 4819
Author(s):  
Yong Joon Suh ◽  
Tae Hyeon Lim ◽  
Hak Soo Choi ◽  
Moon Suk Kim ◽  
Sang Jin Lee ◽  
...  
Keyword(s):  
3D Printing ◽  
Fluorescence Imaging ◽  
Near Infrared ◽  
Imaging Techniques ◽  
The Body ◽  
Monitoring Method ◽  
Printing Technology ◽  
3D Printing Technology ◽  
Nir Fluorescence ◽  
Printing Techniques

Three-dimensional (3D) printing technology holds great potential to fabricate complex constructs in the field of regenerative medicine. Researchers in the surgical fields have used 3D printing techniques and their associated biomaterials for education, training, consultation, organ transplantation, plastic surgery, surgical planning, dentures, and more. In addition, the universal utilization of 3D printing techniques enables researchers to exploit different types of hardware and software in, for example, the surgical fields. To realize the 3D-printed structures to implant them in the body and tissue regeneration, it is important to understand 3D printing technology and its enabling technologies. This paper concisely reviews 3D printing techniques in terms of hardware, software, and materials with a focus on surgery. In addition, it reviews bioprinting technology and a non-invasive monitoring method using near-infrared (NIR) fluorescence, with special attention to the 3D-bioprinted tissue constructs. NIR fluorescence imaging applied to 3D printing technology can play a significant role in monitoring the therapeutic efficacy of 3D structures for clinical implants. Consequently, these techniques can provide individually customized products and improve the treatment outcome of surgeries.

scholarly journals Electroacoustic Music and the Digital Future

2010 ◽  
Vol 13 (1) ◽  
pp. 21-26
Author(s):  
Barry Truax
Keyword(s):  
Digital Technology ◽  
Electroacoustic Music ◽  
Economic Situation ◽  
The Internet ◽  
Digital Audio ◽  
Artistic Practice ◽  
Digital Audio Workstation ◽  
The Creation ◽  
Definition Of

This article outlines the author's views on the contemporary social and economic situation of electroacoustic music and digital technology in general. The dominance of commercial interests in shaping the listener, the artist, and the definition of culture is examined. Issues associated with digital technology, such as standardization, de-skilling, and upgrades, are discussed with respect to artistic practice. It is argued that marginalized artforms such as electroacoustic music have benefited from the windsurfer availability of the digital audio workstation (DAW) for production and the Internet for distribution, but no analogous avenue exists for the creation of the consumer.

Early History of French CG

Leonardo ◽  
2013 ◽  
Vol 46 (4) ◽  
pp. 376-385 ◽  
Author(s):  
Cécile Welker
Keyword(s):  
Computer Graphics ◽  
Digital Technology ◽  
Film Industry ◽  
Visual Media ◽  
Early History ◽  
Artistic Practice ◽  
Visual Effects ◽  
History Of Art ◽  
History Of

This paper provides an historical summary of the emergence of computer graphics research and creation in France between 1970 and 1990, a period of innovation that transformed artistic practice and French visual media. The paper shows the role of these developments in the history of art, the evolution of digital technology, and the expansion of animation and visual effects in the film industry.

scholarly journals Going digital: how technology use may influence human brains and behavior

2020 ◽  
Vol 22 (2) ◽  
pp. 93-97
Keyword(s):  
Mental Health ◽  
Digital Media ◽  
Digital Technology ◽  
Technology Use ◽  
Mental Health Problems ◽  
Imaging Techniques ◽  
Ample Evidence ◽  
Brain Functions ◽  
And Behavior ◽  
Human Brains

The digital revolution has changed, and continues to change, our world and our lives. Currently, major aspects of our lives have moved online due to the coronavirus pandemic, and social distancing has necessitated virtual togetherness. In a synopsis of 10 articles we present ample evidence that the use of digital technology may influence human brains and behavior in both negative and positive ways. For instance, brain imaging techniques show concrete morphological alterations in early childhood and during adolescence that are associated with intensive digital media use. Technology use apparently affects brain functions, for example visual perception, language, and cognition. Extensive studies could not confirm common concerns that excessive screen time is linked to mental health problems, or the deterioration of wellbeing. Nevertheless, it is important to use digital technology consciously, creatively, and sensibly to improve personal and professional relationships. Digital technology has great potential for mental health assessment and treatment, and the improvement of personal mental performance.

Central nervous tissue: an excitable medium. A study using the retinal spreading depression as a tool

2007 ◽  
Vol 366 (1864) ◽  
pp. 359-368 ◽  
Author(s):  
Wolfgang Hanke ◽  
Vera Maura Fernandes de Lima
Keyword(s):  
Spreading Depression ◽  
Imaging Techniques ◽  
Optical Signal ◽  
Excitable Medium ◽  
Physical Parameters ◽  
Neuronal Tissue ◽  
Retinal Tissue ◽  
Propagating Waves ◽  
The Central Nervous System ◽  
External Forces

According to its physicochemical properties, neuronal tissue, including the central nervous system (CNS) and thus the human brain, is an excitable medium, which consequently exhibits, among other things, self-organization, pattern formation and propagating waves. Furthermore, such systems can be controlled by weak external forces. The spreading depression (SD), a propagating wave of excitation–depression, is such an event, which is additionally linked to a variety of medically important situations, classical migraine being just one example. Especially in retinal tissue, a true part of the CNS, the SD can be observed very easily with the naked eye and by video imaging techniques due to its big intrinsic optical signal. We have investigated the retinal SD and its control by external physical parameters such as gravity and temperature. Beyond this, especially due to its medical relevance, the control of CNS excitability by pharmacological tools is of specific interest, and we have studied this question in detail using the retinal SD as an experimental tool to collect information about the control of CNS tissue excitability.

scholarly journals A NEW COLOR CORRECTION METHOD FOR UNDERWATER IMAGING

2015 ◽  
Vol XL-5/W5 ◽  
pp. 25-32 ◽  
Author(s):  
G. Bianco ◽  
M. Muzzupappa ◽  
F. Bruno ◽  
R. Garcia ◽  
L. Neumann
Keyword(s):  
Imaging Techniques ◽  
Color Space ◽  
Computational Cost ◽  
Color Constancy ◽  
Correction Method ◽  
Color Correction ◽  
Physical Parameters ◽  
Light Sources ◽  
Underwater Imaging ◽  
Opponent Color

Recovering correct or at least realistic colors of underwater scenes is a very challenging issue for imaging techniques, since illumination conditions in a refractive and turbid medium as the sea are seriously altered. The need to correct colors of underwater images or videos is an important task required in all image-based applications like 3D imaging, navigation, documentation, etc. Many imaging enhancement methods have been proposed in literature for these purposes. The advantage of these methods is that they do not require the knowledge of the medium physical parameters while some image adjustments can be performed manually (as histogram stretching) or automatically by algorithms based on some criteria as suggested from computational color constancy methods. One of the most popular criterion is based on gray-world hypothesis, which assumes that the average of the captured image should be gray. An interesting application of this assumption is performed in the Ruderman opponent color space l&alpha;&beta;, used in a previous work for hue correction of images captured under colored light sources, which allows to separate the luminance component of the scene from its chromatic components. In this work, we present the first proposal for color correction of underwater images by using l&alpha;&beta; color space. In particular, the chromatic components are changed moving their distributions around the white point (white balancing) and histogram cutoff and stretching of the luminance component is performed to improve image contrast. The experimental results demonstrate the effectiveness of this method under gray-world assumption and supposing uniform illumination of the scene. Moreover, due to its low computational cost it is suitable for real-time implementation.

scholarly journals Teaching the Creation of Batik Motifs to Foreign Students through Distance Learning

2021 ◽  
Vol 10 (7) ◽  
pp. 1
Author(s):  
Wandah Wibawanto ◽  
Triyanto Triyanto ◽  
Agus Cahyono ◽  
Tjetjep R. Rohendi
Keyword(s):  
Online Learning ◽  
Distance Learning ◽  
Digital Technology ◽  
Foreign Students ◽  
Online Course ◽  
Artistic Practice ◽  
Practical Procedure ◽  
Complex Process ◽  
Art Practices ◽  
Short Courses

Implementing short courses on the complex process of batik creation for foreign students, which have to be conducted online due to the COVID-19 pandemic, presents a challenge. Therefore, this research aims to explore the implementation of batik art practices that involve online learning and digital technology. This study entails an online course involving twenty-six (26) foreign students to provide empirical evidence about the practical procedure for making batik motifs with digital applications. Consequently, it confirmed that the artistic practice of making batik motifs can be tought online, and participants can effectively make these designs by employing the Dbatik application.

FLUID INHOMOGENEITY INFLUENCING WAVE MOTION

2021 ◽  
Vol 7 (1) ◽  
pp. 112-125
Author(s):  
Konstantin Yu. BASINSKY ◽  
Dmitry S. Zvonarev
Keyword(s):  
Boundary Conditions ◽  
Wave Motion ◽  
Fluid Velocity ◽  
Equations Of Motion ◽  
Vertical Direction ◽  
Graphical Analysis ◽  
Surface Shape ◽  
Physical Parameters ◽  
Motion Graphs ◽  
Unknown Amplitude

This article deals with a problem that describes the propagation of surface waves in a layer of an inhomogeneous fluid. The authors present a mathematical model that describes wave motions on the surface of an ideal exponentially stratified fluid. In the equations and boundary conditions, the transition to dimensionless variables and quantities has been completed. Next, a linear version of the problem follows, the solution of which is in the form of progressive waves of a steady-state form with unknown amplitude coefficients. This type of solution is substituted into the equations and boundary conditions of the linear problem, which makes it possible to reduce the determination of unknown quantities to the problem of solving a system of ordinary differential equations. Solving the system has allowed identifying two areas of physical parameters with different nature of wave motion. Expressions are obtained for the unknown components of the fluid velocity, pressure, free surface shape, and wave frequency. This article contains the analysis of the influence of various parameters of the problem on the wave motion: graphs of the dependence of the phase velocity of the wave on the stratification parameter are constructed for different layer depths and wavelengths. For a better understanding of the nature of wave motion, the expressions for the trajectories of liquid particles are determined. This has required writing the equations of motion of particles using the obtained expressions for the components of the velocity vector; these equations are solved with the method of asymptotic approximations. A graphical analysis of the effect of the stratification parameter value on the particle trajectory shape is carried out. The results have revealed that an increase in stratification leads to a compression of the trajectory in the vertical direction.

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