In this paper, a structure of a hybrid highly scalable video encoder with fine granularity scalability in a scheme based on a modified version of the classic MPEG-2 scalable encoder is proposed. The assumption is that high level of compatibility with the MPEG video coding standards would be ensured. In particular, it is assumed that the low-resolution base layer bitstream is fully compatible wi...

The transcoding of MPEG video streams is important in a variety of situations such as in rate reduction for small bandwidth downstream channels and in extracting a fast visual playback stream for digital video cassette recorders. This paper addresses transcoding of MPEG intra-coded frames by selectively copying DCT AC coefficients from the primary MPEG stream into the secondary MPEG stream. A r...

The MPEG-4 standard describes a multimedia format that allows to combine vector based data with audio and video. This makes it possible to store and transmit lectures created with the E-Chalk system without any loss of semantics. Utilizing the infrastructure already available for MPEG-4 promises the possibility of getting rid of a proprietary lecture format. This article presents the implementa...

An approach to an MPEG decoding system with reduced memory capacity will be presented. This method relies on the simple technique of one-dimensional DPCM to recompress reconstructed Macro Block (MB) prior to being stored on frame memory. Simulation results suggest that image quality is subjectively acceptable when using approximately one-half of the memory size required by that of conventional ...

MPEG-aware Disk Storage System. (August 2000) Qian Ren, B.S., Tsinghua University Chair of Advisory Committee: Dr. A.L. Narasimha Reddy In the past decades the demand for systems that can process and deliver massive amount of storage has increased. Multimedia applications such as streaming audio and video require large amounts of data to be read from disk and processed for timely delivery to th...

This paper describes the work performed by a number of companies and universities who have been working as a consortium under the umbrella of the European Union Framework Programme 5 (FP5), Information Society Technologies (IST) research program, in order to provide a set of Digital Rights Management (DRM) technologies and architectures, aiming at helping to reduce the copyright circumvention r...

Recombinant Ganoderma lucidum immunomodu-latory protein (rLZ-8) expressed using the Pichia yeast eukaryotic expression system is a potential new drug for cancer therapy; however, it has a short half-life in the body. In order to optimize the potency and stability of rLZ-8, we modified the recombinant protein chemically using methoxy-PEG-succinimid...

This paper explores the new features of the recent MPEG4 standard, namely the description and the composition of an interactive multimedia scene. Providing with such advanced facilities, the MPEG-4 standard is no longer considered only as an efficient compression tool for conventional video / audio application. It is now granted the power of computing mechanism as any other programming language...

MPEG standards provide tools for a broad range of purposes, covering from coding to metadata description tools. In this paper, the combined use of tools from di erent MPEG standards is described in the context of a video summarization application. The main objective of the framework is the e cient generation of summaries, integrated with their adaptation to the user's terminal and network. The ...

This paper outlines a new standard video compression technology: MPEG-4. We propose a very efficient coding scheme using the one of compression tools of MPEG-4 “Sprite coding”. We first introduce MPEG-4 visual “Profiles”, which are sets of tools (technical elements) that realize certain types of applications. Among these “Profiles”, “Main Profile” is capable of using “Sprites” i.e. a unified ba...