  In this paper a novel approach to embed watermark into the host image using
quantization with the help of Dynamic Fuzzy Inference System (DFIS) is
proposed. The cover image is decomposed up to 3- levels using quantization and
Discrete Wavelet Transform (DWT). A bitmap of size 64x64 pixels is embedded
into the host image using DFIS rule base. The DFIS is utilized to generate the
watermark weighting function to embed the imperceptible watermark. The
implemented watermarking algorithm is imperceptible and robust to some normal
attacks such as JPEG Compression, salt&pepper noise, median filtering, rotation
and cropping.
  Keywords: Watermark, Quantization, Dynamic Fuzzy Inference System,
Imperceptible, Robust, JPEG Compression, Cropping.
