K. Kuppusamy and K. Thamodaran, Alagappa University, India

The hash function offers an authentication and an integrity to digital images. In this paper an innovative optimized security scheme based on Particle swarm optimization (PSO) for image authentication and tamper proofing is proposed. This scheme provide solutions to the issues such as robustness, security and tamper detection with precise localization. The features are extracted in Daubechies4 wavelet transform domain with help of PSO to generate the image hash. This scheme is moderately robust against attacks and to detect and locate the tampered areas in an image. The experimental results are presented to exhibit the effectiveness of the proposed scheme.

Image Authentication, dabechies4, hash function, PSO and tamper detection.