International Organization for Standardization Organization International Normalization Iso/iec Jtc1/sc29/wg11 Coding of Moving Pictures and Audio
نویسنده
چکیده
Matching Pursuit is a video prediction error coding tool which is based on signal expansion using over-complete Gabor dictionary. It was originally proposed to MPEG committee by UCB and has been adopted to MPEG4 Version 2 Visual Working Draft since the Stockholm meeting in July 1997. In the contribution m3247 to the Tokyo meeting, Veeschouwer and Macq of UCL, Belgium propose using a Subband dictionary as an alternative to the Gabor dictionary. Their arguments are: 1. The Subband dictionary has roughly the same subjective and objective performances as the Gabor dictionary. 2. By using the Subband dictionary, the local matching pursuit atom search, when measured in algorithmic operation counts, can be sped up by a factor of 50 by exploiting the hierarchical subband structure and the simple Haar wavelet filter.
منابع مشابه
International Organisation for Standardisation Organisation Internationale De Normalisation Iso/iec Jtc1/sc29/wg11 Coding of Moving Pictures and Audio
متن کامل
International Organisation for Standardisation Organisation Internationale De Normalisation Iso/iec Jtc1/sc29/wg11 Coding of Moving Pictures and Audio
متن کامل
International Organization for Standardaization Organization International Normalization Iso/iec Jtc1/sc29/wg11 Coding of Moving Pictures and Associated Audio
The utility-based transcoder descriptor basically provide the information of a possible set of transcoding operators that meet the bit rate constrained by network or terminal, and when available, the utility ranking of the set of operators. The information indicates an optimum transcoding operator and the rank of operators within the set in terms of quality. In order to address the transcoder d...
متن کاملInternational Organisation for Standardisation Organisation Internationale De Normalisation Iso/iec Jtc1/sc29/wg11 Coding of Moving Pictures and Audio Information
متن کامل
MPEG-1 AND MPEG-2 Video Standards
The development of digital video technology in the 1980s has made it possible to use digital video compression in various kinds of applications. The effort to develop standards for coded representation of moving pictures, audio, and their combination is carried out in the Moving Picture Experts Group (MPEG). MPEG is a group formed under the auspices of the International Organization for Standar...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 1998