Watermarking Error-Correcting Codes Reed-Solomon Codes Software for Watermarking
Institute of Mathematics and Informatics Bulgarian Academy of Sciences
Serdica Journal of Computing, Vol. 2, No 2, (2008), 163p-180p
The emergence of digital imaging and of digital networks has made duplication of original artwork easier. Watermarking techniques, also referred to as digital signature, sign images by introducing changes that are imperceptible to the human eye but easily recoverable by a computer program. Usage of error correcting codes is one of the good choices in order to correct possible errors when extracting the signature. In this paper, we present a scheme of error correction based on a combination of Reed-Solomon codes and another optimal linear code as inner code.
We have investigated the strength of the noise that this scheme is steady to
for a fixed capacity of the image and various lengths of the signature. Finally, we compare our results with other error correcting techniques that are
used in watermarking. We have also created a computer program for image watermarking that uses the newly presented scheme for error correction.