Virtual videography

Heck, Rachel; Wallick, Michael N.; Gleicher, Michael

doi:10.1145/1180639.1180851

Cited by 16 publications

(17 citation statements)

References 1 publication

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“…• Students have the ability to view last year's video before coming to the next class. This may help them better understand the lesson and actively participate in the class activity (ELI, 2007, Heck et al, 2007. • The professor may decide to deliver part of the course online in a blended approach.…”

Section: Introductionmentioning

confidence: 99%

Video recording lectures: Student and professor perspectives

Odhabi¹,

Nicks-McCaleb²

2011

Brit J Educational Tech

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This paper investigated the use of special eyeglasses designed with a built-in video camera and microphone for the purpose of recording classroom activities from the point of view of both the professor and the student. The aim is to eliminate the need for dedicated video recording in the classroom. This paper reviewed the various techniques used to record a lecture and highlighted the advantages and disadvantages of each. It also presented 10 activities from the point of view of the student and the professor, which may play a role in improving students' understanding of the lecture. The videos produced by the professor and student cameras were reviewed in terms of their effectiveness and usefulness with regard to the 10 activities. The results were analysed and conclusions were drawn based upon the findings of this study.

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Section: Introductionmentioning

confidence: 99%

Video recording lectures: Student and professor perspectives

Odhabi¹,

Nicks-McCaleb²

2011

Brit J Educational Tech

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“…For example, tiling is discussed in [6], [7], [8], [9], [10]. Furthermore, [11], [12], [13], [14], [15] extensively address the problem of automatically generating personalized content, and [16] discusses plain cropping. 1 This size depends on the lighting and weather conditions.…”

Section: Related Workmentioning

confidence: 99%

“…Moreover, the non-linear nature of a panorama-virtual view transformation introduces further complexities in the approach. For example, in figure 4, it can be seen that the collection of required tiles do not form any simple shape like a rectangle or a square, e.g., as used in [16]. This poses different challenges than the ones that are being tackled in for example [7] where the panning and tilting correspond to strictly navigating the panorama along the horizontal and vertical directions respectively.…”

Section: Related Workmentioning

confidence: 99%

Tiling of panorama video for interactive virtual cameras: Overheads and potential bandwidth requirement reduction

Gaddam

Ngo

Langseth

et al. 2015

2015 Picture Coding Symposium (PCS)

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Abstract-Delivering high resolution, high bitrate panorama video to a large number of users introduces huge scaling challenges. To reduce the resource requirement, researchers have earlier proposed tiling in order to deliver different qualities in different spatial parts of the video. In our work, providing an interactive moving virtual camera to each user, tiling may be used to reduce the quality depending on the position of the virtual view. This raises new challenges compared to existing tiling approaches as the need for high quality tiles dynamically change. In this paper, we describe a tiling approach of panorama video for interactive virtual cameras where we provide initial results showing the introduced overheads and the potential reduction in bandwidth requirement.

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“…Automatic video recording systems [7,16] have been successfully used to record class lectures. Those systems used cameras and microphones to capture the video footage, which was automatically edited in a post-processing step.…”

Section: Video Directing Techniquesmentioning

confidence: 99%

SmartCamera: a low-cost and intelligent camera management system

Roudaki

Kong

Reetz

2015

Multimed Tools Appl

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Intelligent camera management systems were developed to automatically record meetings for videoconferencing. These systems provided many benefits, such as reducing the production cost and conveniently documenting events. However, automatically recorded videos in general were not visually engaging. This paper presents a novel approach that intelligently controls camera shots and angles to improve the visual interest. We use 3D infrared images captured by a Kinect sensor to recognize active speakers and their positions in a meeting. A movable camera, constructed by placing a wireless PTZ (pan-tilt-zoom) camera on top of a motorized rail, can automatically move its position to frame an active speaker in the center of the screen. Without interrupting the meeting, a speaker can seamlessly switch video sources through gesture-based commands. We have summarized and implemented a set of heuristic rules to simulate a human director. These rules can be visually edited through a graphical user interface. The customization of a virtual director makes our system applicable in various scenarios. We conducted a user study, and the evaluation results justified the quality of an automated video.

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Virtual videography

Cited by 16 publications

References 1 publication

Video recording lectures: Student and professor perspectives

Video recording lectures: Student and professor perspectives

Tiling of panorama video for interactive virtual cameras: Overheads and potential bandwidth requirement reduction

SmartCamera: a low-cost and intelligent camera management system

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