| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 725414 | The Journal of China Universities of Posts and Telecommunications | 2010 | 5 Pages |
Abstract
Quantized projection technology (QP) is the version of quantization index modulation (QIM) working in the projection domain. It essentially belongs to a double-sided additive embedder. In this article, the concept of sign quantized projection (SQP) is proposed, which differs from the conventional QP when working as a single-sided embedder. Theoretical analysis reveals that SQP has the same probability of miss and probability of false alarm as QP. Also, the document-to-watermark ratio (DWR) of SQP is less than its counterpart of QP by 10lg (1 + γ) dB.
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