Video for Virtual Reality

Video can capture the dynamic appearance of the real world in a way no other technology does; virtual reality technology, on the other hand, enables the display of dynamic visual content with unparalleled realism and immersion. The fusion of these two technologies—video for virtual reality (VR)—promises to enable many exciting photo-realistic experiences.Over half a day, this course will provide an overview of three aspects of this exciting medium: the technical foundations, current systems in practice, and the potential for future systems of VR video.In the first section, we will explore the geometric and optical problems underpinning VR video. Then, we will introduce both 360 degree video and stereoscopic video, including how 360 video is captured, analyzed, and stitched, including the mathematics behind how stereo 360 video can be captured.This background material provides the prerequisites for understanding current systems in use. In the middle hour of the course, we explain how state-of-the-art stereo 360 video is produced from camera systems and computational processing. Then, we will consider the art of storytelling in VR, and how new tools for editing VR video can aid in the craft of this art production. Finally, this section provides an industry perspective covering current production and post-production choices and practice, including CG integration.The final part of our course focuses on the next generation of video for VR, where we move to 6 degrees-of-freedom (6DoF) experiences. We introduce the basics and challenges behind light field cameras, processing and displays, and see how they can enable 6DoF experiences. This will be followed by another industry perspective on how light field camera arrays have been used to create cutting-edge experiences integrating volumetric live-action elements. To conclude the course, we will see how far we still must go toward the ideal system, in hopes of inspiring the attendees to push the boundary farther to reach it.We hope this course is useful to a broad audience—at SIGGRAPH and beyond—as we cover the academic, artistic, and production sides of VR video

Video for Virtual Reality

Video can capture the dynamic appearance of the real world in a way no other technology does; virtual reality technology, on the other hand, enables the display of dynamic visual content with unparalleled realism and immersion. The fusion of these two technologies—video for virtual reality (VR)—promises to enable many exciting photo-realistic experiences.Over half a day, this course will provide an overview of three aspects of this exciting medium: the technical foundations, current systems in practice, and the potential for future systems of VR video.In the first section, we will explore the geometric and optical problems underpinning VR video. Then, we will introduce both 360 degree video and stereoscopic video, including how 360 video is captured, analyzed, and stitched, including the mathematics behind how stereo 360 video can be captured.This background material provides the prerequisites for understanding current systems in use. In the middle hour of the course, we explain how state-of-the-art stereo 360 video is produced from camera systems and computational processing. Then, we will consider the art of storytelling in VR, and how new tools for editing VR video can aid in the craft of this art production. Finally, this section provides an industry perspective covering current production and post-production choices and practice, including CG integration.The final part of our course focuses on the next generation of video for VR, where we move to 6 degrees-of-freedom (6DoF) experiences. We introduce the basics and challenges behind light field cameras, processing and displays, and see how they can enable 6DoF experiences. This will be followed by another industry perspective on how light field camera arrays have been used to create cutting-edge experiences integrating volumetric live-action elements. To conclude the course, we will see how far we still must go toward the ideal system, in hopes of inspiring the attendees to push the boundary farther to reach it.We hope this course is useful to a broad audience—at SIGGRAPH and beyond—as we cover the academic, artistic, and production sides of VR video

Motorcycle Accidents are the Strongest Risk Factor for Panfacial Fractures Among Pediatric Patients

Study Design: A retrospective cohort study was conducted using the Kids' Inpatient Database from 2000 to 2014. Subjects were included if they were 18 years and younger and suffered any type of facial fracture

Early childhood (0-5 years) presents the greatest risk for facial dog bites

The purpose of the present study is to compare the characteristics of dog bite wounds to the face and that of the rest of the body among the pediatric population in the United States and to determine independent risk factors for dog bite wounds to the face. A retrospective cohort study was conducted using the Kids' Inpatient Database. There were multiple, heterogenous predictor variables. The primary outcome variable was a facial dog bite. A multivariate logistic regression was employed to identify independent risk factors for the primary outcome variable. A P value less than .05 was the threshold for statistical significance. Our final sample consisted of 9,057 patients who suffered dog bite injuries, of which 2,913 (32.2%) occurred on the face. Relative to individuals aged 16-20 years, individuals aged 0-5 (odds ratio [OR] 5.7; confidence interval [CI] 4.0, 8.1), 6-10 (OR 3.8; CI 2.6, 5.5), and 11-15 years (OR 1.6; CI 1.1, 2.5) were all independently associated with increased odds of incurring a facial dog bite injury. Patients who were not admitted electively were 2.5 times (CI 1.4, 4.6) more likely to incur a facial dog bite injury relative to patients who were admitted electively. Young children (0-5 years) were at the greatest risk for facial dog bites relative to children aged 16-20 years. Dog bites that were admitted on emergency were more likely to occur on the face relative to those that were electively admitted to the hospital. To reduce the risk for facial dog bites and the host of chronic psychological ramifications that accompany them, established preventative strategies ought to be exercised