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  1. Proceedings of the 2nd ACM International Workshop on Immersive Media Experiences (ImmersiveMe '14)
  2. ENF Signal Induced by Power Grid: A New Modality for Video Synchronization
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Development of a Simple and Low-Cost Olfactory Display for Immersive Media Experiences
ENF Signal Induced by Power Grid: A New Modality for Video Synchronization
Immersion, Imagination & Innovation: Media Immersion Matching the power of the Imagination to Innovate the Future
Transforming Lives Through Story Immersion: Innovation of Aphasia Rehabilitation Therapy through Storytelling Learning Landscapes
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Sensory Fiction: A Design Fiction of Emotional Computation
Integration of a Precise Indoor Position Tracking Algorithm with an HMD-Based Virtual Reality System
GACE: Gesture and Appearance Cutout Embedding for Gaming Applications
Mindful: A Platform for Large-Scale Affective Field Research

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ENF Signal Induced by Power Grid: A New Modality for Video Synchronization

Content Provider ACM Digital Library
Author Wong, Chau-Wai Hajj-Ahmad, Adi Wu, Min Su, Hui Garg, Ravi
Abstract Multiple videos capturing the same scene from possibly different viewing angles may be synthesized for novel immersive experience. Synchronization is an important task for such applications involving multiple pieces of audio-visual data. In this work, we exploit the electric network frequency (ENF) signal inherently embedded in the soundtrack and/or image sequence of video to temporally align video recordings. ENF is the supply frequency of power distribution networks in a power grid. Its value fluctuates slightly from its nominal value of 50 Hz or 60 Hz, and the fluctuation trends stay consistent within the same grid. Audio and video recordings that are created in areas of electric activities may capture the ENF signal due to electromagnetic interferences and other physical phenomena. We propose to synchronize video recordings by aligning the embedded ENF signals. Without major constraints on viewing angle and camera calibration as many existing methods impose, the proposed approach emerges as a new synchronization modality.
Starting Page 13
Ending Page 18
Page Count 6
File Format PDF
ISBN 9781450331227
DOI 10.1145/2660579.2660588
Language English
Publisher Association for Computing Machinery (ACM)
Publisher Date 2014-11-07
Publisher Place New York
Access Restriction Subscribed
Subject Keyword Rolling shutter Audio/video synchronization Multi-modal processing Electric network frequency
Content Type Text
Resource Type Article
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