A Fuzzy Logic Approach to Digital Image Watermarking

The watermarking system proposed in this paper offers an expert system technique to help solve the ownership claim for accidental attacks on digital images. The proposed spatial domain watermarking system is based on fuzzy logic and was designed with the intent of embedding watermark features such that they are undetectable to the human visual system. To achieve this objective, the development and design of the watermarking scheme targets three of the five perceptual holes of the human visual system. The resulting watermarking scheme was evaluated using image processing techniques typical of an accidental attack process. The evaluation of the embedded watermark was subjected to a limited sample of human visual system observers.