• Performance improvement of spa...

Treffer: Performance improvement of spatial watermarking through efficient non-binary channel coding

Title:
Performance improvement of spatial watermarking through efficient non-binary channel coding
Authors:
BRANDAO, T, QUELUZ, M. P, RODRIGUES, A
Source:
Security and watermarking of multimedia contents III (San Jose CA, 22-25 January 2001)SPIE proceedings series. :651-662
Publisher Information:
Bellingham WA: SPIE, 2001.
Publication Year:
2001
Physical Description:
print, 6 ref
Original Material:
INIST-CNRS
Subject Terms:
Electronics, Electronique, Computer science, Informatique, Optics, Optique, Physics, Physique, Telecommunications, Télécommunications, Sciences exactes et technologie, Exact sciences and technology, Sciences appliquees, Applied sciences, Informatique; automatique theorique; systemes, Computer science; control theory; systems, Intelligence artificielle, Artificial intelligence, Reconnaissance des formes. Traitement numérique des images. Géométrie algorithmique, Pattern recognition. Digital image processing. Computational geometry, Telecommunications et theorie de l'information, Telecommunications and information theory, Théorie de l'information, du signal et des communications, Information, signal and communications theory, Théorie du signal et des communications, Signal and communications theory, Codage, codes, Coding, codes, Codage binaire, Binary coding, Codificación binaria, Codage canal, Channel coding, Code non binaire, Non binary code, Código no binario, Communication numérique, Digital communication, Détection optimale, Optimal detection, Detección optimal, Evaluation performance, Performance evaluation, Evaluación prestación, Filigranage numérique, Digital watermarking, Filigrana digital, Filigranage, Watermarking, Filigrana, Image numérique, Digital image, Imagen numérica, Méthode analytique, Analytical method, Método analítico, Méthode domaine fréquence, Frequency domain method, Método dominio frecuencia, Pseudo bruit, Pseudonoise, Seudo ruido, Spectre étalé, Spread spectrum, Espectro ensanchado, Théorie communication, Communication theory, Teoría comunicación
Document Type:
Konferenz Conference Paper
File Description:
text
Language:
English
Author Affiliations:
Instituto Superior Técnico - Instituto de Telecomunicações, Av. Rovisco Pais, 1049-001 Lisboa, Portugal
Access URL:
http://pascal-francis.inist.fr/vibad/index.php?action=search&terms=14050781
Rights:
Copyright 2002 INIST-CNRS
CC BY 4.0
Sauf mention contraire ci-dessus, le contenu de cette notice bibliographique peut être utilisé dans le cadre d’une licence CC BY 4.0 Inist-CNRS / Unless otherwise stated above, the content of this bibliographic record may be used under a CC BY 4.0 licence by Inist-CNRS / A menos que se haya señalado antes, el contenido de este registro bibliográfico puede ser utilizado al amparo de una licencia CC BY 4.0 Inist-CNRS
Notes:
Computer science; theoretical automation; systems

Telecommunications and information theory
Accession Number:
edscal.14050781
Database:
PASCAL Archive

Weitere Informationen

Many of the proposed image watermarking algorithms belong to the class of spread-spectrum techniques, in which a pseudo-noise signal (itself a function of the mark) is added to the host signal, either in space or frequency domains. Under these approaches, several results and concepts from digital communication theory, such as M-ary digital modulation, channel coding and optimum detection, are easily applicable. Previous work showed that M-ary modulation may result in a significant performance improvement for values of M higher than 4. It was also demonstrated that binary error protection techniques, such as binary BCH and convolutional codes, might be used advantageously in watermarking. Non-binary error-correcting codes, such as Reed-Solomon (RS) codes, are naturally suited for application with non-binary modulation alphabets. In this paper, we combine M-ary modulation with shortened RS codes. Analytical expressions and bounds for the bit error rate are derived and compared with empirical results for several types of images. The effectiveness of concatenating M-ary modulation with RS codes is also assessed under JPEG compression. It is shown that, for low output error rates, there exists an improvement in performance using both concepts simultaneously. It will be also demonstrated that, in general, their efficiency in watermarking detection outperforms binary BCH codes used in conjunction with binary signaling.