allow some degree of interpretation, which can be passed onto or accessed by a device or a computer code. MPEG-7 aims to create a standard for describing these operational requirements. This article describes MPEG-7's concepts, terminology, and requirements. We also describe the influence of other approaches to multimedia content description on the development of the MPEG-7 standard and conclud...

As the demand for multimedia applications increases, the performance of algorithms such as MPEG-2 video compression on general-purpose microprocessors is becoming more important. In this paper, we propose a number of coarse-grained parallel implementations of MPEG-2 decoding and encoding. We evaluate the performance of these implementations on a single-chip multiprocessor, and compare the perfo...

This paper proposes the design and development of Moving Picture Experts Group-2 (MPEG-2) Video Decoder to offer flexible and effective utilization of bandwidth services. The decoder is capable of decoding the MPEG-2 bit stream on a single host machine. The present decoder is designed to be simple, but yet effectively reconstruct the video from MPEG-2 bit stream. The designed MPEG-2 video decod...

In this paper, we propose a segmentation based transcoding scheme for adapting MPEG-2 e-learning visual contents to heterogeneous environments. This is achieved by converting MPEG-2 video into MPEG-4 video objects with arbitrary shape and different semantic value in e-learning context. The transcoding scheme is based on a hybrid segmentation method, which employs both compressed and pixel domai...

A novel objective approach to assessing the relative perceptual quality of MPEG-encoded video sequences is presented. Quality comparison of the original and filtered MPEG-encoded video sequences is performed directly in the frequency domain. Experimental results show a very good correlation between the objective quality measurement and the human subjective perception. This objective approach pr...

This document describes Real-Time Transport Protocol (RTP) payload formats for carrying each of MPEG-4 Audio and MPEG-4 Visual bitstreams without using MPEG-4 Systems. For the purpose of directly mapping MPEG-4 Audio/Visual bitstreams onto RTP packets, it provides specifications for the use of RTP header fields and also specifies fragmentation rules. It also provides specifications for Multipur...

This document describes Real-time Transport Protocol (RTP) payload formats for carrying each of MPEG-4 Audio and MPEG-4 Visual bitstreams without using MPEG-4 Systems. This document obsoletes RFC 3016. It contains a summary of changes from RFC 3016 and discusses backward compatibility to RFC 3016. It is a necessary revision of RFC 3016 in order to correct misalignments with the 3GPP Packetswitc...

A novel objective approach to assessing the relative perceptual quality of MPEG-encoded video sequences is presented. Quality comparison of the original and filtered MPEG-encoded video sequences is performed directly in the frequency domain. Experimental results show a very good correlation between the objective quality measurement and the human subjective perception. This objective approach pr...

We describe the architecture and key features of the MPEG-4 Systems specification, as well as the encoding methodology of its various components: scene description and BIFS, animation streams, object descriptors, object content infonnation, as well as delivery and multiplexing. We also describe the MPEG-4 reference software as well as our own prototype software for MPEG-4 authoring, streaming, ...