Orthogonal transform watermarking techniques for authentification of digital images and documents.
Author
Shu, Feng.
Date of Issue
2005School
School of Electrical and Electronic Engineering
Abstract
In our transform-domain-based watermarking algorithms, two-level quantization is employed for both watermark embedding and extraction processes. Our public watermarking method is essentially extended from the semi-private approach and a spread-spectrum (SS) technique, which has been widely used in digital communication, is employed.
Subject
DRNTU::Engineering::Electrical and electronic engineering::Electronic systems::Signal processing
Type
Thesis
Rights
Nanyang Technological University
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