conclusion

Digital watermarking is an outstanding technology that can serve a wide range of applications in various media types. But, the employment of schemes depends upon the requirements that may vary widely. A sound knowledge of communication techniques and signal processing methods is essential for efficient development of watermarking techniques. Besides this the attacks that the signal is expected to endure the assessment of the amount of distortion that the signal suffered which in turn determine the efficacy of the system and the effective cost involved need to be taken into consideration while designing watermarking technique for particular application. Thus the standards for all the applications don’t remain alike.