Acta Metallurgica Sinica(English letters) ›› 2010, Vol. 17 ›› Issue (1): 62-66.doi: 10.1016/S1005-8885(09)60425-8

• Wireless • Previous Articles     Next Articles

Performance analysis of sign quantized projection

YE Tian-yu, NIU Xin-xin, MA Zhao-feng, YANG Yi-xian   

  1. 1. Information Security Center, State Key Laboratory of Networking and Switching Technology,
    Beijing University of Posts and Telecommunications, Beijing 100876, China
    2. Key Laboratory of Network and Information Attack and Defense Technology of MOE,
    Beijing University of Posts and Telecommunications, Beijing 100876, China
    3. National Engineering Laboratory for Disaster Backup and Recovery, Beijing 100876, China
  • Received:2009-03-12 Revised:1900-01-01 Online:2010-02-28
  • Contact: YE Tian-yu

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 dB.

Key words:

DWR;QP;SQP