These days enormous amounts of information is at almost everyone's disposal with a single click of a button, and that too on a hand held device. Data can be present in various forms like still images, and slides of pictures like a video of GIF, over various websites present on the Internet. Because of the excessive use of this data, it also becomes important to secure it as it can be duplicated, transformed, stolen, tampered, or misused pretty easily. Recently, there has been a spike increase in the use of medical images in various E-health applications. In order to counter these potential threats, a number of watermarking techniques are being developed. A watermark is embedded in an image or document in the form of an image or pattern that can be used to authenticate the integrity of the image in question. As time goes by, the complexity of the problems that we are dealing with also keeps on increasing.
TopFurther Introduction
With the introduction of electronic, handheld devices, as well as advancements in Digital content creation is now easier than ever thanks to modern communication and technology. Then, this information is disseminated over the Internet to different communities. This content, which is essentially intellectual property, has been protected online using a variety of techniques, including steganography, encryption, and watermarking (Riaz, 2013), where anybody may read your data. To ensure security, steganography employs disguised communications without the end-or user's approval, whereas watermarking does not. Nonetheless, certain watermarking techniques are invisible by users (Imaduddin, 2014). Digital watermarking can be shared across several copies or unique to each copy (Mehta, 2014). Watermarking is a method of adding information (a watermark) to a digital image. The data is contained in the image here. The spatial domain of a watermarked image differs from that of the original work. When information is added to an image, the original work becomes deformed. It might be suggested as (Żurawski, 2013):Cw = Co + Cw(1) Where: Co= Original work, w = watermark, Cw = Watermarked work.
To read Digital watermarks, you are required to employ the appropriate software systems. Digitals watermarks help to secure the content while not leaving a perceivable mark on the work and the appearance of the work is not affected by the watermarking process either. For watermarking the content, a unique algorithm is used by the user to encrypt a specific pattern that can only be decrypted by the original created which is then embedded into the work.
In study (Miyazaki, 2005) Watermarking is preferred over comparable encrypting/data concealment techniques. In contrast, the watermarking on medical images is more robust. The user's information and the hospital's logo may, if necessary, be added to the medical image using this technology. In the event of particularly sensitive data, these additional strategies can be utilised in addition to watermarking methods to increase effectiveness.