Impact of MPEG standards on multimedia industry

Chiariglione, Leonardo

doi:10.1109/5.687836

Cited by 20 publications

(8 citation statements)

References 1 publication

Supporting

Mentioning

Contrasting

Order By: Relevance

“…MPEG-2 then extended this capability to the forms of DVD and HDTV. Their impact on computing has been very significant [1]. Since then much more audio-visual data have been produced and used.…”

Section: Introductionmentioning

confidence: 99%

<title>Compressed-domain video parsing using energy histograms of the lower-frequency DCT coefficients</title>

Bao

Lay

Guan³

1999

SPIE Proceedings

View full text Add to dashboard Cite

As an increasing amount of audio-visual data is stored, distributed, and used in the compressed form, compressed-domain techniques will be favorable. However, as conventional features may not be directly accessible in the compressed domain, exploration of new compressed domain features will become mandatory. Studies have shown that the DC coefficients of a DCT-compressed video can be used to detect shot transitions for relatively simple video sequences. In this work, the use of the energy histogram of the lower frequency DCT coefficients as features for video parsing was examined. The experimental results show an improvement over those obtained by the DC coefficients alone.

show abstract

Section: Introductionmentioning

confidence: 99%

<title>Compressed-domain video parsing using energy histograms of the lower-frequency DCT coefficients</title>

Bao

Lay

Guan³

1999

SPIE Proceedings

View full text Add to dashboard Cite

show abstract

“…However, in MPEG-21, a complete and rich delivery framework based around a more versatile DI specification has been standardized. Thus, MPEG has shifted away from the previous bitstream syntax and semantics, decoder behavior (MPEG-1, MPEG-2, MPEG-4 [3], [4]) and multimedia description tools (MPEG-7 [5]) standardization activities to standardize the components of a higher level framework. The latter is intended to be a significant step toward achieving the mantra of "any content, any time, anywhere".…”

Section: Introductionmentioning

confidence: 99%

MPEG-21 digital item declaration and Identification-principles and compression

Burnett

Davis

Drury

2005

IEEE Trans. Multimedia

View full text Add to dashboard Cite

At the core of the MPEG-21 Multimedia Framework is the concept of the Digital Item, a virtual container for a hierarchical structure of metadata and resources. This paper considers the Digital Item Declaration Language (DIDL), gives examples of its usage, and discusses how it is used to integrate other parts of MPEG-21. The paper then discusses how Digital Item Identification integrates with the DIDL to allow MPEG-21 to utilize standard identifiers from many application spaces. Finally, an alternative, compressed form of the XML Digital Item Declaration is described. This uses schema-based compression to significantly reduce the size of these XML documents. Abstract-At the core of the MPEG-21 Multimedia Framework is the concept of the Digital Item, a virtual container for a hierarchical structure of metadata and resources. This paper considers the Digital Item Declaration Language (DIDL), gives examples of its usage, and discusses how it is used to integrate other parts of MPEG-21. The paper then discusses how Digital Item Identification integrates with the DIDL to allow MPEG-21 to utilize standard identifiers from many application spaces. Finally, an alternative, compressed form of the XML Digital Item Declaration is described. This uses schema-based compression to significantly reduce the size of these XML documents.

show abstract

“…However, the incredible spread of multimedia has been made possible by the design of new computer architecture elements, specifically oriented to efficiently handle and process these multi-modal information types. As a matter of fact [5], differently from the common trend in designing high performance general-purpose computers, the multimedia market imposed on the hardware manufacturers the integration of some novelties in standard PCs too. Answers have focused on various items: first, the integration of multimedia peripherals (DVD, high-performance disks, CD-ROMs, frame-grabbers,...), followed by the addition of multimedia processors [20] or high performance DSPs, in order to handle images and sounds concurrently with the normal CPU activity; finally, the enlargement of the instruction set architecture and the re-design of the internal computational units of general-purpose CPUs (such as Pentium MMX, HP MAX2, Ultrasparc VIS) in order to improve the parallel computation on image pixels [9].…”

Section: Introductionmentioning

confidence: 99%

Untitled

Cucchiara

Prati

Piccardi

2003

Multimedia Tools and Applications

View full text Add to dashboard Cite

The workload of multimedia applications has a strong impact on cache memory performance, since the locality of memory references embedded in multimedia programs differs from that of traditional programs. In many cases, standard cache memory organization achieves poorer performance when used for multimedia. A widely-explored approach to improve cache performance is hardware prefetching, which allows the pre-loading of data in the cache before they are referenced. However, existing hardware prefetching approaches unable to exploit the potential improvement in performance, since they are not tailored to multimedia locality. In this paper we propose novel effective approaches to hardware prefetching to be used in image processing programs for multimedia. Experimental results are reported for a suite of multimedia image processing programs including MPEG-2 decoding and encoding, convolution, thresholding, and edge chain coding.

show abstract

Impact of MPEG standards on multimedia industry

Cited by 20 publications

References 1 publication

<title>Compressed-domain video parsing using energy histograms of the lower-frequency DCT coefficients</title>

<title>Compressed-domain video parsing using energy histograms of the lower-frequency DCT coefficients</title>

MPEG-21 digital item declaration and Identification-principles and compression

Untitled

Contact Info

Product

Resources

About