A Review of Different Techniques on Digital Image Watermarking Scheme
Vibhavari Kamble, P. G. Student, Dinesh Patil, Rupali S. Patil · 2016
In this paper we aim to present a survey of different techniques on digital image watermarking. Digital watermarking technique is becoming more important in this developing society of Internet. Digital watermarking is used as a key solution to make the data transferring secure from illegal interferences. These techniques are used in various areas such as copyright protection, broadcast monitoring and owner identification as well as in telemedicine, where enormous amount of medical data need to be securely transferred over the public network and manipulate effectively. Medical image watermarking is an appropriate method used for enhancing security and authentication of medical data, which is crucial and used for further diagnosis and reference. In this paper we mainly discuss about two methods as spatial domain and frequency domain.In frequency domain such as Discrete Cosine Transform(DCT),Discrete Fourier Transform (DFT),Discrete Wavelet Transform(DWT),Singular Value Decomposition(SVD)etc, the watermark is inserted into transformed coefficients of image giving more information hiding capacity and more robustness against watermarking attacks because information can be spread out to entire image.