Compressed video communications by Abdul H. Sadka

By Abdul H. Sadka

The compression schemes utilized for the garage and transmission of electronic video info go away content material delicate to transmission error, info loss and caliber degradation. contemporary advancements in mistakes resilience thoughts let stronger caliber of carrier of video conversation over quite a number community platforms.Digital video communications, supported by means of the web, ATM networks and Broadband ISDN, have gone through major improvement over the last few years. rising purposes comprise videoconferencing, tele-medicine and distance studying. This innovative textual content addresses the issues linked to the supply and layout of video verbal exchange companies. * offers a complete assessment of the foundations and strategies hired within the development of the functionality of video formats in errors services environments * offers a functionality review and comparability of video coding criteria, MPEG-4, H.261 and H.263 * Outlines equipment of video conversation over cellular networks * presents assistance on caliber enhancement and the assembly caliber of provider (QoS) specifications for electronic video communications * Accompanying CD-ROM containing movies to demonstrate the coding and mistake resilience know-how defined in the textual content A beneficial source for researchers and postgraduate scholars operating with video verbal exchange know-how, in addition to working towards digital and communications engineers designing and imposing video verbal exchange structures and specialists operating within the video, tv, computing and communications industries.

Show description

Read Online or Download Compressed video communications PDF

Similar electronics: telecommunications books

The CRC Handbook of Modern Telecommunications

This authoritative guide, contributed to via a crew of foreign specialists, covers the main dynamic parts within the altering telecommunications panorama. Written for telecommunications experts who enforce the recent applied sciences, The CRC instruction manual of recent Telecommunications is a superb significant other quantity to the authors' The Telecommunications guide, yet stands good by itself, because it extends the variety of themes to incorporate voice over net, site visitors administration, caliber of carrier, and different dominant destiny traits.

Mobile Agents for Telecommunication Applications

Presents an summary of the way the cellular code can be utilized in networking with the purpose of constructing extra clever info retrieval, community and mobility administration, and community providers.

Successful Service Design for Telecommunications: A comprehensive guide to design and implementation

Winning provider layout for Telecommunications: A entire consultant to layout and implementation ПРОГРАММИНГ, ОС и БД,СЕТЕВЫЕ ТЕХНОЛОГИИ, WEB-СОЗИДАНИЕ Автор: Sauming Pang Название: profitable provider layout for Telecommunications: A complete consultant to layout and implementation Издательство: Wiley Год издания: 2009 Страниц: 343 ISBN: 978-0-470-75393-4 Язык: английский Размер: 5,2 Мб [PDF]Comprehensive connection with profitable provider layout for the telecommunications undefined.

Competition and Chaos: U.S. Telecommunications Since the 1996 Telecom Act

Whilst Congress handed the 1996 Telecommunications Act, legislators expected that the decreased regulatory obstacles may bring about elevated festival between U. S. telecommunications prone, and, in flip, the recent festival might force innovation and achieve fiscal advantages for either American shoppers and telecommunications services.

Extra info for Compressed video communications

Example text

A replication of the optimally trained codebook must also exist in the decoder. e. using a separate segment of the available bandwidth. In dynamic codebook structures, updating the decoder codebook becomes a rather important factor of the coding system, hence leading to the necessity of making the update of codebooks a periodic process. In block-based video coders, each macroblock of a frame is mapped to a codebook vector that best represents it. If the objective is to achieve the highest coding efficiency then the vector selection must yield the lowest output bit rate.

18. 18 that the distribution of coefficients in the transformed block is far from uniform, with a few large coefficients positioned in the upper left-hand corner of the block (the largest coefficient amplitude is that of the INTRADC coefficient) and small coefficient values elsewhere. Therefore, the DCT transform has considerably reduced the spatial redundancies of the block and suppressed the correlations of original pixels. The energy of the block was concentrated in the top left-hand section where lower frequency coefficients of the original sample block are located.

263 introduces more accuracy to motion prediction by using half-pixel coordinates, the spatial filter is removed from the prediction loop. The buffer is used to regulate the output bit rate of the encoder, as will be discussed in the next chapter. The building blocks of a typical block-transform video coding algorithm are explained in the following subsections. 9 DCT transformation To reduce the correlations between the coefficients of a MB, the pixels are transformed into a different domain space by means of a mathematical transform.

Download PDF sample

Rated 4.68 of 5 – based on 21 votes