Digital Watermarking with Progressive Detection
碩士 === 國立中山大學 === 資訊工程學系研究所 === 88 === In this thesis, we proposed two frequency-based watermarking algorithms. One is DCT-based method. Embedding watermark in the multi-areas and multi- frequency bands to ensure we can get a less distorted watermark sequence under unintentional circumstance. The ot...
| Main Authors: | , |
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| Other Authors: | |
| Format: | Others |
| Language: | zh-TW |
| Published: |
2000
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| Online Access: | http://ndltd.ncl.edu.tw/handle/64180520450139245904 |
| Summary: | 碩士 === 國立中山大學 === 資訊工程學系研究所 === 88 === In this thesis, we proposed two frequency-based
watermarking algorithms. One is DCT-based method.
Embedding watermark in the multi-areas and multi-
frequency bands to ensure we can get a less
distorted watermark sequence under unintentional
circumstance. The other is DWT-based method. The
parent-children relationship and the feature of
bit-plane coding in the EZW algorithm are
exploited to embed watermark. It makes that we
can know the watermark exist or not in the
progressive transmission system. The experimental
results show that the proposed methods both can
resist unintentional attacks. The DWT-based
method also has a better progressive detection
capability.
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