A review on watermarking techniques for compressed encrypted images

If one image can equal to thousand words then there is no reason for less growth of images for communication. Growing volume of images and use of image analytics for forecasting of market is tremendous. Apart from billions of camera exists, there are billions of mobile phones are being used in the Indian market and majority of them are equipped with camera. If every camera clicks only one image per day then what is the volume of images and what amount of space required to save these images is not tough to imagine. Digital watermarking is not new for the market but watermarking for the compressed encrypted images is relatively new and appealing. To save space, a large volume of data is being kept in the compressed encrypted format. For the various reasons, there is a great issue of copyright protection for these images. Growth of compressed encrypted image has magnified the need for more advanced watermarking techniques. In this paper we are trying to deal with the issues of copyright in the compressed encrypted images and review related work done by scientific community on various methods. We also are trying to address new future challenges of digital watermarking in the area of compressed encrypted image.