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Generalized Theoretical Modeling of InterFrame Prediction Error for High FrameRate Video Signal Considering Integral Phenomenon
Yukihiro BANDOH Seishi TAKAMURA Hirohisa JOZAWA Yoshiyuki YASHIMA
Publication
IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Vol.E93A
No.8
pp.14421452 Publication Date: 2010/08/01
Online ISSN: 17451337 Print ISSN: 09168508 Type of Manuscript: Special Section PAPER (Special Section on Signal Processing) Category: Image Coding and Video Coding Keyword: high framerate sequence, motion blur, video coding, interframe prediction,
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Summary:
Higher framerates are essential in achieving more realistic representations. Since increasing the framerate increases the total amount of information, efficient coding methods are required. However, the statistical properties of such data, needed for designing sufficiently powerful encoders, have not been clarified. Conventional studies on encoding high framerate sequences do not consider the effect on the encoding bitrate of the motion blur generated by the shutter being open. When the open interval of the shutter in the image pickup apparatus increases, motion blur occurs, which is known as the integral phenomenon. The integral phenomenon changes the statistical properties of the video signal. This paper derives, for high framerate video, a mathematical model that quantifies the relationship between framerate and bitrate; it incorporates the effect of the lowpass filtering induced by the open shutter. A coding experiment confirms the validity of the mathematical model.

