Digital watermark data embedding method, and digital...

Details Digital watermark data embedding method, and digital... Digital watermark data embedding method, and digital...

2006-05-16

2006-05-16

Zand, Kambiz (Department: 2132)

Electrical computers and digital processing systems: support

Multiple computer communication using cryptography

Particular communication authentication technique

C705S075000, C382S282000, C382S285000, C382S305000, C382S306000

Reexamination Certificate

active

07047412

ABSTRACT:
To lighten the processing load of embedding a digital watermark in content data, a preliminary process (embedding strength map generating process) run by a preprocessing section and the main process (digital watermark embedding process) run by a man processing section are run mutually independently. Specifically, the preliminary process of the preprocessing section is run each time new content data is stored to the content data database, and the main process of the main processing section is run when a content delivery request is received from a receiving terminal (client).

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“Maintaining Image Quality in Digital Watermarking Based on Contour Preserving”, I. Eichizen et al, Information Processing Society of Japan, Journal vol. 41, No. 6, pp. 1828-1839, Jun. 2000.

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