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Real-time face view correction for front-facing cameras

Computational Visual Media 2021年第4期7卷 437-452页

作者： Yudong Guo Juyong Zhang Yihua Chen Hongrui Cai Zhangjin Huang Bailin Deng University of Science and Technology of China Hefei 230026China School of Computer Science and Informatics Cardiff UniversityCardiffWalesUK

Face views are particularly important in person-to-person *** between the camera location and the face orientation can result in undesirable facial appearances of the participants during video *** phenomenon is particularly noticeable when using devices where the frontfacing camera is placed in unconventional locations such as below the display or within the *** this paper,we take a video stream from a single RGB camera as input,and generate a video stream that emulates the view from a virtual camera at a designated *** most challenging issue in this problem is that the corrected view often needs out-of-plane head *** address this challenge,we reconstruct the 3D face shape and re-render it into synthesized frames according to the virtual camera *** output the corrected video stream with natural appearance in real time,we propose several novel techniques including accurate eyebrow reconstruction,high-quality blending between the corrected face image and background,and template-based 3D reconstruction of *** system works well for different lighting conditions and skin tones,and can handle users wearing *** experiments and user studies demonstrate that our method provides high-quality results.

关键词： face view correction 3D face reconstruction deep learning online communication

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Digital tildes ("~") may convey more: analyzing innovative uses of tildes in Chinese WeChat messages

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Language and Semiotic Studies 2023年第3期9卷 443-460页

作者： Huan Xu Dengshan Xia Beijing Foreign Studies University Haidian District Beijing China

Innovative uses of punctuation in online communication have become increasingly visible in research and public awareness since the 2000s,whereas studies on the innovative use of tildes("~")in digital use remain *** on a data set of 543 Chinese WeChat messages with sentence-final tildes,this article investigates the uses and functions of innovative tildes in online communication using quantitative data and follow-up *** findings suggest that:(1)The innovative tildes are deployed in messages implying sounds and performing speech acts in online communication,and they are more frequently used in speech acts(e.g.,expressives and directives in particular).(2)The innovative tildes convey sound extension,ie.,to compensate for the loss of audio information in online communication and reproduce elongated sounds;pragmatic function,i.e.,to enhance or mitigate the illocutionary forces of speech acts;and entertaining function,i.e.,to make messages informal,vivid,joyful,and interesting.(3)The innovative tildes are pragmalicalized as a result of their semiotic features and politeness motivation of messengers for maintaining rapport and achieving successful online communication.

关键词： innovative uses of tildes online communication politeness pragmatic-alization WeChat messages

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Perpetual Professor： Changing Patterns of Faculty-Student Interaction in the Twenty-First Century

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Sociology Study 2012年第8期2卷 636-644页

作者： Mary Beth Leidman Mark Piwinsky Matthew McKeague Indiana University of Pennsylvania USA Kutztown University USA

Current communication technologies have provided new modalities for students to contact professors outside of the normal office settings and regulated office hours traditionally found in higher education. This study concentrates on the faculty perceptions of how the usage of e-mail and cell phones has changed interactions with students over the past decade. General levels of usage are analyzed as well as correlation to curricular disciplines, An online survey of faculty members at Indiana University of Pennsylvania found maior changes in the type and frequency of contact between professors and students as well as a shift from personal contact to e-mail and telephone usage. The expanded level of communication opportunities has placed faculty in the position of having to extend direct student-oriented time outside of the classroom, while continuing to maintain academic scholarship and other professional responsibilities.

关键词： Faculty interaction students' e-mail online communication online classrooms

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