JPEG domain watermarking

Wenbin Luo, Gregory L. Heileman, Carlos E. Pizano

Research output: Contribution to journalArticlepeer-review

6 Scopus citations

Abstract

In this paper, a JPEG domain image watermarking method that utilizes spatial masking is presented. The watermarking algorithm works in the compressed domain, and can be implemented efficiently in real-time (only 50ms is required for a 512×512 24-bit color image on a 700MHz computer). In many applications, particularly those associated with delivering images over the Internet, the ability to watermark images in real-time is required. In order to achieve a real-time watermarking capability, the proposed technique avoids many of the computation steps associated with JPEG compression. Specifically, the forward and inverse DCT do not need to be calculated, nor do any of the computations associated with quantization. Robustness to JPEG compression and additive noise attacks is achieved with the proposed system, and the relationship between watermark robustness and watermark position is described. A further advantage of the proposed method is that it allows a watermark to be detected in an image without referencing to the original unwatermarked image, or to any other information used in the watermark embedding process.

Original languageEnglish (US)
Pages (from-to)980-985
Number of pages6
JournalProceedings of SPIE-The International Society for Optical Engineering
Volume4684 II
DOIs
StatePublished - 2002
Externally publishedYes

Keywords

  • Compressed domain
  • DCT
  • Image watermarking
  • JPEG compression
  • Quantization
  • Spatial masking

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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