This work is focused on protection of state of the art video bitstreams and their scalable extensions. For copyright protection and meta-data embedding, we opt for watermark embedding with very controlled compromise on PSNR and bitrate. The secret lies in the fact that the reconstruction loop has taken into account to avoid the mismatch on the encoder and decoder. Spread spectrum watermarking was then implemented on QTCs inside the reconstruction loop. It is, later on, used to embed Tardos fingerprinting code to avoid traitor tracing. For restriction of access only to authorized users,...

In today's world, countless number of images are collected using various image acquisition devices. The course of actions taken to enhance the acquired image quality, to extract meaningful information from the acquired image, and to represent these information in a compact fashion is known as image processing. Digital image processing is the use of computer algorithms to perform image processing on digital images. A digital image is a numeric representation of a two-dimensional image. Depending on whether the image resolution is fixed, it may be of vector or raster type. The term "digital...