Dual Watermarking of Images for Authentication and Tamper Detection

Images are one of the important type of data over the internet. Images can be distributed and copied over the internet in very easy manner. Watermarking of images is one of the important solution to avoid unwanted distribution and copying of the images. Dual Watermarking technique is used to watermark the images in such a way that they must provide authentication and tamper detection. Double encryption is also used to protect the watermark. Language constructs are used as Watermark.