Efficient multimedia encryption via entropy codec design

Fast Protection of H.264/AVC by Selective Encryption of CAVLC and CABAC for I & P Frames

This paper presents a novel method for the protec1 tion of bitstreams of state-of-the-art video codec H.264/AVC. The 2 problem of selective encryption (SE) is addressed along with the 3 compression in the entropy coding modules. H.264/AVC supports 4 two types of entropy coding modules. Context-adaptive variable 5 length coding (CAVLC) is supported in H.264/AVC baseline 6 profile and context-ada...

Joint Entropy Coding and Encryption in AVS Video Codec

An Image Compression Method for Fleck Board-3

The recent availability of inexpensive hardware, such as CMOS and CCD cameras, has enabled the new research field of wireless multimedia sensor networks. This is a network of interconnected devices, capable of retrieving multimedia content from the environment. In this type of network, the nodes usually have very limited resources, in terms of processing power, bandwidth and energy. Efficient c...

Improving Parallelism of a Hardware Friendly, Scalable Wavelet Entropy Codec

In the RESUME project we explore the use of reconfigurable hardware for the design of portable multimedia systems by developing a scalable wavelet-based video codec. A scalable video codec provides the ability to produce a smaller video stream with reduced frame rate, resolution or image quality starting from the original encoded video stream with almost no additional computation. For this code...

An image encryption scheme with a pseudorandom permutation based on chaotic maps

Many research efforts for image encryption schemes have elaborated for designing nonlinear functions since security of these schemes closely depends on inherent characteristics of non-linear functions. It is commonly believed that a chaotic map can be used as a good candidate of a nonlinear component for image encryption schemes. We propose a new image encryp-tion algorithm using a large pseudo...