A novel clonal selection algorithm based fragile watermarking method


Aslantas V. , ÖZER Ş. , Ozturk S.

6th International Conference on Artificial Immune Systems, Santos, Brezilya, 26 - 29 Ağustos 2007, cilt.4628, ss.358-359 identifier identifier

  • Cilt numarası: 4628
  • Basıldığı Şehir: Santos
  • Basıldığı Ülke: Brezilya
  • Sayfa Sayıları: ss.358-359

Özet

In this paper, a novel fragile watermarking method based on clonal selection algorithm (CSA), CLONALG, is presented. In Discrete Cosine Transform (DCT) based fragile watermarking techniques, there occurs some degree of rounding errors because of the conversion of real numbers into integers in the process of transformation of image from frequency domain to spatial domain. In this paper, the rounding errors caused by this transformation process are corrected by using CLONALG. Simulation results show that extracted watermark is obtained exactly the same as embedded watermark and optimum watermarked image transparency is achieved. In addition, the performance comparison of CLONALG and genetic algorithm (GA) based methods is realized.