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21,070
result(s) for
"Visual media"
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How to see the world : an introduction to images, from self-portraits to selfies, maps to movies, and more
\"In How to See the World, visual culture expert Nicholas Mirzoeff offers a sweeping look at history's most famous images--from Velâazquez's Las Meninas to the iconic \"Blue Marble\"--to contextualize and make sense of today's visual world. Drawing on art history, sociology, semiotics, and everyday experience, he teaches us how to close read everything from astronaut selfies to Impressionist self-portraits, from Hitchcock films to videos taken by drones. Mirzoeff takes us on a journey through visual revolutions in the arts and sciences, from new mapping techniques in the seventeenth century to new painting styles in the eighteenth and the creation of film, photography, and x-rays in the nineteenth century. In today's networked world, mobile technology and social media enable us to exercise \"visual activism\"--the practice of producing and circulating images to drive political and social change. Whether we are looking at pictures showing the effects of climate change on natural and urban landscapes or an fMRI scan demonstrating neurological addiction, Mirzoeff helps us to find meaning in what we see,\"--Amazon.com.
Cross-Domain Facial Expression Recognition by Combining Transfer Learning and Face-Cycle Generative Adversarial Network
by
Wang, Qian
,
Zhou, Yu
,
Liu, Zhenni
in
1247: Recent Advances in AI-Powered Multimedia Visual Computing and Multimodal Signal Processing for Metaverse Era
,
1247: Recent Advances in AI-Powered Multimedia Visual Computing and Multimodal Signal Processing for Metaverse Era
,
Artificial neural networks
2024
Facial expression recognition (FER) is one of the important research topics in computer vision. It is difficult to obtain high accuracy in FER tasks, especially when the high-quality labeled data are insufficient. Indeed, the facial images with non-frontal faces, occlusions and inaccurate labels heavily affects the training results of FER network models, which causes low recognition accuracy and poor robustness. To this end, we propose a novel strategy for FER tasks through combining transfer learning and generative adversarial network (GAN). First, we enlarge the training datasets by introducing an effective face-cycle GAN to synthesize additional facial expression images. Then, we develop two FER neural networks based on two representative convolutional neural networks (CNN). By transferring the cross-domain knowledge from the two well-trained CNNs to the proposed FER CNNs, it not only obtains more pre-trained knowledge and also accelerates the training process greatly. The experimental results show that the proposed FER CNNs integrated with the new face-cycle GAN achieves high accuracies 98.44%, 95.24% and 91.67% on three widely used datasets CK + , JAFFE, and Oulu-CASIA, respectively. Compared to the results obtained by other state-of-the-art FER methods, the accuracies are improved by 0.34%, 0.24%, and 2.62%, respectively.
Journal Article
Empire of Pictures
2015,2016,2022
In Cold War historiography, the 1960s are often described as a decade of mounting diplomatic tensions and international social unrest. At the same time, they were a period of global media revolution: communication satellites compressed time and space, television spread around the world, and images circulated through print media in expanding ways. Examining how U.S. policymakers exploited these changes, this book offers groundbreaking international research into the visual media battles that shaped America's Cold War from West Germany and India to Tanzania and Argentina.
The effectiveness of audio-visual media and social media platforms as components of blended learning
2020
South Africa currently has 90 million cellphone connections and 4G bandwidth is accessible to 75% of the population. Audio-visual media, such as videos, can be used to enhance teaching as the use of multimedia is a key component of blended learning. In total, 92 fourth-year university education students were surveyed to determine their response to video-based assessments. Of the students surveyed, 92% believed that videos assisted their understanding of the course content, 78.5% believed that video-based assessments were less difficult than traditional assessments and 89% intend using audio-visual media in their own classrooms. Significantly, 88.7% believe that such media should be used at least once a week. In addition, once they graduate, 63% of participants intend using social media platforms to communicate with learners. The study suggests that a greater emphasis needs to be placed on blended learning, both in schools and tertiary institutions in South Africa.
Journal Article
The Nencki Affective Picture System (NAPS): Introduction to a novel, standardized, wide-range, high-quality, realistic picture database
2014
Selecting appropriate stimuli to induce emotional states is essential in affective research. Only a few standardized affective stimulus databases have been created for auditory, language, and visual materials. Numerous studies have extensively employed these databases using both behavioral and neuroimaging methods. However, some limitations of the existing databases have recently been reported, including limited numbers of stimuli in specific categories or poor picture quality of the visual stimuli. In the present article, we introduce the Nencki Affective Picture System (NAPS), which consists of 1,356 realistic, high-quality photographs that are divided into five categories (people, faces, animals, objects, and landscapes). Affective ratings were collected from 204 mostly European participants. The pictures were rated according to the valence, arousal, and approach–avoidance dimensions using computerized bipolar semantic slider scales. Normative ratings for the categories are presented for each dimension. Validation of the ratings was obtained by comparing them to ratings generated using the Self-Assessment Manikin and the International Affective Picture System. In addition, the physical properties of the photographs are reported, including luminance, contrast, and entropy. The new database, with accompanying ratings and image parameters, allows researchers to select a variety of visual stimulus materials specific to their experimental questions of interest. The NAPS system is freely accessible to the scientific community for noncommercial use by request at
http://naps.nencki.gov.pl
.
Journal Article
Black meme : a history of the images that make us
by
Russell, Legacy, author
in
Black people Race identity Philosophy.
,
Visual sociology.
,
Black people in mass media.
2024
\"explores the construct, culture, and material of the \"meme\" as mapped to Black visual culture from 1900 to present day\"-- Provided by publisher.
Young People’s Use of Digital Health Technologies in the Global North: Narrative Review
2021
A diverse array of digital technologies are available to children and young people living in the Global North to monitor, manage, and promote their health and well-being.
This article provides a narrative literature review of the growing number of social research studies published over the past decade that investigate the types of digital technologies used by children and young people in the Global North, in addition to investigating which of these technologies they find most useful or not useful. Key findings as well as major gaps and directions for future research are identified and discussed.
A comprehensive search of relevant publications listed in Google Scholar was conducted, supported by following citation trails of these publications. The findings are listed under type of digital technology used for health: cross-media, internet, social media, apps and wearable devices, sexual health support and information, and mental health support and information.
Many young people in the Global North are active users of digital health technologies. However, it is notable that they still rely on older technologies, such as websites and search engines, to find information. Apps and platforms that may not have been specifically developed for young people as digital health resources often better suit their needs. Young people appreciate the ready availability of information online, the opportunities to learn more about their bodies and health states, and the opportunities to learn how to improve their health and physical fitness. They enjoy being able to connect with peers, and they find emotional support and relief from distress by using social media platforms, YouTube, and online forums. Young people can find the vast reams of information available to them difficult to navigate. They often look to trusted adults to help them make sense of the information they find online and to provide alternative sources of information and support. Face-to-face interactions with these trusted providers remain important to young people. Risks and harms that young people report from digital health use include becoming overly obsessed with their bodies' shape and size when using self-tracking technologies and comparing their bodies with the social media influencers they follow.
Further details on how young people are using social media platforms and YouTube as health support resources and for peer-to-peer sharing of information, including attention paid to the content of these resources and the role played by young social media influencers and microcelebrities, would contribute important insights to this body of literature. The role played by visual media, such as GIFs (Graphics Interchange Format) and memes, and social media platforms that have recently become very popular with young people (eg, Snapchat and TikTok) in health-related content creation and sharing requires more attention by social researchers seeking to better understand young people's use of digital devices and software for health and fitness.
Journal Article