Watermarking mobile phone colour images with reed solomon error correction code
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Watermarking mobile phone colour images with reed solomon error correction code Document Transcript

  • 1. Watermarking Mobile Phone Color Images with Reed Solomon Error Correction Code AIM: The main aim of the project is to design and implement “Watermarking Mobile Phone Color Images with Reed Solomon Error Correction Code”. ABSTRACT: This paper proposes a new watermarking scheme for embedding phone numbers into color images captured by a mobile phone camera. Firstly, the phone number digits are transformed into binary format and the checksum is added as extra bits. Then the generated binary vector is encoded using Reed Solomon error correction code and the generated sequence is transformed into binary matrix. This generated binary matrix, which is the watermark, is inserted in one of the DCT coefficients of the 8x8 block of the cover color image. The distortion caused by the watermarking is assessed by using the PSNR and SSIM. The robustness of the scheme is assessed by using “Stirmark” software package. The new algorithm offered better performance to the case without using error correction codes and survived JPEG compression and different 3x3 two dimensional filtering. V.Mallikarjuna (Project manager) ISO: 9001- 2008 CERTIFIED COMPANY Mobile No: +91-8297578555. Branches: Hyderabad & Nagpur
  • 2. ALGORITHM IMPLIMENTATION: Fig: The proposed embedding algorithm TOOLS: Xilinx 9.2ISE, Modelsim 6.4c. APPLICATION ADVANTAGES: V.Mallikarjuna (Project manager) ISO: 9001- 2008 CERTIFIED COMPANY Mobile No: +91-8297578555. Branches: Hyderabad & Nagpur
  • 3.  The use of RS ECC’s for watermarking mobile phone captured images was investigated.  The low frequency component of the DCT is used to embed the phone number.  Both RS and BCH ECCs produce the same results when the watermarked image is attacked.  The proposed watermarking algorithms have shown to be resistant mainly to JPEG compression, 3x3 2D Gaussian and low pass filtering, 3x3 median filtering and some rescaling attacks. REFERENCES: • S. Katzenbeisser and F. Petitcolas, Information Hiding Techniques for Steganography and Digital Watermarking. London: Artech House. • M. M. I. Cox and J. Bloom, Digital Watermarking. San Francisco: Morgan Kaufmann Publishers. • J. H. Seo and H. B. Park, "Colour images watermarking of multi-level structure for multimedia services," in International Conference on Convergence Information Technology, Gyeongju, South Korea, pp. 854 860. • K. Krasavin, J. Parkkinen, and T. Jaaskelainen, "Digital watermarking on mobile devices," in International Conference on Information and V.Mallikarjuna (Project manager) ISO: 9001- 2008 CERTIFIED COMPANY Mobile No: +91-8297578555. Branches: Hyderabad & Nagpur
  • 4. Communication Technologies: From Theory to Applications, Damascus, Syria, 2004, pp. 319-320. • K. Krasavin, J. Parkkinen, and T. Jaaskelainen, "Visual quality of watermarking for mobile devices," in Journal of the Society for Information Display. V.Mallikarjuna (Project manager) ISO: 9001- 2008 CERTIFIED COMPANY Mobile No: +91-8297578555. Branches: Hyderabad & Nagpur