This book investigates the image watermarking domain, analyzing and comparing image watermarking techniques that exist in current literature. The author goal is to aid researchers and students in their studies in the vast and important domain of image watermarking, including its advantages and risks. The book has three chapters: image watermarking using data compression; speech modulation for image watermarking; and secure image watermarking based on LWT and SVD. In addition, this book:  Investigates the image watermarking domain, analyzing and comparing current image watermarking techniques Includes detail on image encryption and mathematical tools used for image watermarking Covers image watermarking using data compression, speech modulation for image watermarking, and more