Cascade Algorithm of Image Watermarking Based on Multiple Wavelet Components

This paper presents the method of embedding multiple secrete information (Logos or Messages etc) one by one into the same host image which is new topic of research. The method consists of multiple frequency bands which are altered by putting the different secrete information at different locations. The tool used to perform the task is discrete wavelet transform which provides imperceptibility, robustness and security requirements. Peak signal to noise ratio, mean square error, correlation coefficients are the parameters used to check the effectiveness of algorithm. The algorithm is tested by applying the same on multiple input images with multiple secrete information. The existing provides more security than the normal watermarking schemes as host image is having multiple secrete information for copyright protection.