Hierarchical watermarking depending on local constraints

C D Coltman, A G Bors

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

In this paper we propose a new watermarking technique where the watermark is embedded according to two keys The first key is used to embed a code bit in a block of pixels The second is used to generate the whole sequence of code bits The watermark is embedded in spatial domain by adding or subtracting a random digital pattern to the given image signal The embedding depth level depends on the spectral density distribution of the DCT coefficients and on the JPEG quantization table The label consists of a set of bits which are embedded locally in a rectangular set of blocks and it is repeated over the entire image After detecting individual bits, the retrieved label is verified by performing a XOR operation to the watermark code.

Original languageEnglish
Title of host publication2001 INTERNATIONAL CONFERENCE ON IMAGE PROCESSING, VOL III, PROCEEDINGS
Place of PublicationNEW YORK
PublisherIEEE
Pages1011-1014
Number of pages4
ISBN (Print)0-7803-6725-1
Publication statusPublished - 2001
EventInternational Conference on Image Processing (ICIP 2001) - THESSALONIKI
Duration: 7 Oct 200110 Oct 2001

Conference

ConferenceInternational Conference on Image Processing (ICIP 2001)
CityTHESSALONIKI
Period7/10/0110/10/01

Keywords

  • IMAGE WATERMARKING
  • DOMAIN

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