ABSTRACT
This chapter develops a novel adjusted-purpose (AP) watermarking technique to integrate different types of techniques. It presents an overview of the technique, and explains a morphological approach to extracting the pixel-based (PB) features of an image. The chapter outlines the strategies for adjusting the variable-sized transform window (VSTW) and the quantity factor (QF). It provides experimental results and a collecting approach to generating VSTW. The chapter extends research to extracting multiple regions of interest (ROIs) as well as automatic selection and proposes a novel scheme of regions of noninterest (RONIs) ranking to achieve high-capacity watermark embedding in the frequency domain and high-quality stego-images. Different amounts of bits in watermarks can be adjusted for different purposes based on particle swarm optimization (PSO) determination. The chapter also develops a new optimal watermarking scheme for embedding high-capacity data by PSO. The purpose of preprocessing watermark information is to generate a bitstream for embedding.
