We describe two major issues in object-based video coding and communications and
provide solutions based on the MPEG-4 coding standard. We first consider the general …

In recent years digital imaging devices become an integral part of our daily lives due to the
advancements in imaging, storage and wireless communication technologies. Power-Rate …

Source coding and channel coding are embedded in a video coding algorithm for low
bitrates (64 kb/s) to obtain a complete encoder which is resilient against channel errors. The …

If digital video data is transmitted over unreliable channels such as the internet or wireless
terminals, the risk of severe image distortion due to transmission errors is ubiquitous. To …

In this paper we extend a joint source/channel coding scheme (syntax based error
concealment (SBEC)) for MPEG2 compressed video, over noisy channels. The extension is …

We propose a new construction for low-density source codes with multiple parameters that
can be tuned to optimize the performance of the code. In addition, we introduce a set of …

Video communication is often afflicted by various forms of losses, such as packet loss over
the Internet. The paper examines the question of whether the packet loss pattern, and in …

In this work, we consider the selection of complexity and rate controlling source coding
parameters jointly with transmitter power. Power invested during source encoding can …

A novel fidelity constraint to the image enhancement problem is presented. With this
constraint, we exploit the motion vectors of a compressed video bit-stream. These vectors …

With the introduction of high data rates in the emerging wireless standards, real-time
multimedia communication is becoming common in wireless communication systems. The …