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Proceedings Paper

Secret transmission method of character data in motion picture communication
Author(s): Kiyoshi Tanaka; Yasuhiro Nakamura; Kineo Matsui
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Paper Abstract

A secret transmission method of character data is presented in this paper when a series of motion pictures are communicated between two stations. Character data are embedded into the codes of image data to be output from the interframe DPCM encoder, so as to prevent a third party from reading the message. The received data are normally decoded to a picture in higher quality and the message is also decoded at the same time if the receiver knows how to embed it. It results in our experiments that the transmission of character data has little effect on picture quality and the amount of embedded characters will be estimated to be about 20 - 30% of bits transmitted in each frame, for example, when SNR is above 30 dB.

Paper Details

Date Published: 1 November 1991
PDF: 4 pages
Proc. SPIE 1605, Visual Communications and Image Processing '91: Visual Communication, (1 November 1991); doi: 10.1117/12.50295
Show Author Affiliations
Kiyoshi Tanaka, National Defense Academy (Japan)
Yasuhiro Nakamura, National Defense Academy (Japan)
Kineo Matsui, National Defense Academy (Japan)

Published in SPIE Proceedings Vol. 1605:
Visual Communications and Image Processing '91: Visual Communication
Kou-Hu Tzou; Toshio Koga, Editor(s)

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