Loh, Shiau Ping (2004) Watermarking for securing digital media content. [USQ Project]
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Abstract
With the proliferation of digitized media, the need of digital watermarks as a
copyright protection, ownership identification and a secure way of embedding information
has become important. A useful watermark technique should be robust
against malicious attacks or tampering to remove the watermark and should not
greatly affect the quality of the original file.
In conventional cryptographic systems, once the information is decrypted, the
recipent can misuse it. The reproduction and retransmission cannot be tracked
easily.
In these project, LSB watermarking technique for digital image is investigated. A
software system, consisting of watermark embedding and recovery is implemented
with single or multiple watermarks embedding. The robustness and effectiveness
of this watermarking technique is tested using the GIF and JPEG file compression
format.
A comparator is designed and implemented to further enhanced the robustness
when subjected to compression. All the results of the LSB watermarking techniques
are tabulated.
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