Quantization index modulation: a class of provably good methods for digital watermarking and information embedding
Quantization index modulation: a class of provably good methods for digital watermarking and information embedding
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DOI：
10.1109/isit.2000.866336
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发表时间：
2000-06
期刊：
影响因子：
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通讯作者：
Brian Chen;G. Wornell
中科院分区：
文献类型：
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作者：
Brian Chen;G. Wornell
我们考虑嵌入一个信号的问题（例如，数字水印）在另一个“主”信号内，以形成第三个“复合”信号。目标是实现有效的率失真鲁棒性权衡。我们介绍了一类新的嵌入方法称为失真补偿量化索引调制。在涉及有意和无意攻击的几种不同情况下，此类中存在容量实现方法，而在其他情况下，这些方法实现了比先前提出的扩频和广义低比特调制方法更好的率失真鲁棒性性能。
We consider the problem of embedding one signal (e.g., a digital watermark), within another "host" signal to form a third, "composite" signal. The goal is to achieve efficient rate-distortion-robustness trade-offs. We introduce a new class of embedding methods called distortion-compensated quantization index modulation. In several different contexts involving both intentional and unintentional attacks, capacity-achieving methods exist within this class, while in other contexts these methods achieve provably better rate-distortion-robustness performance than previously proposed spread-spectrum and generalized low-bit(s) modulation methods.