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Scrambling of MPEG Video by Exchanging Motion Vectors
Ayuko TAKAGI Hitoshi KIYA
Publication
IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Vol.E87-A
No.8
pp.2054-2057 Publication Date: 2004/08/01 Online ISSN:
DOI: Print ISSN: 0916-8508 Type of Manuscript: Special Section LETTER (Special Section on Digital Signal Processing) Category: Image/Visual Signal Processing Keyword: MPEG video, image scrambling, motion vector,
Full Text: PDF(271.6KB)>>
Summary:
A method of scrambling MPEG video by exchanging the motion vector (MV) in the MPEG bitstream is proposed. It deals directly with the MPEG bitstream and exclusive MPEG encoders are unnecessary. The size of the scrambled bitstream does not increase and image quality is maintained after descrambling. Moreover, the structure of the MPEG bitstream is maintained and can be decoded with a standard MPEG video decoder. We demonstrate the effectiveness of this method through simulation results that reveal unchanged image quality and size of bitstreams.
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