Text luminance modulation for hardcopy watermarking.

Paulo Vinicius Koerich Borges Joceli Mayer

Published in: Signal Process. (2007)

Keyphrases

data hiding
information retrieval
text retrieval
color images
digital images
keywords
text mining
watermarking scheme
communication systems
spread spectrum
database
information hiding
watermarking algorithm
error correction
free text
text documents
computer systems
information extraction
digital libraries