Proceedings ArticleDOI
Coding of advanced TV for BISDN using multiple subbands
P.E. Fleischer,T.C. Chen,S.M. Lei +2 more
- pp 1314-1318
TLDR
A subband-based coding scheme for the digital transmission of advanced television (ATV) signals within broadband ISDN (BISDN) is described, which achieves the roughly 5.6:1 compression desired while retaining very high image quality.Abstract:
A subband-based coding scheme for the digital transmission of advanced television (ATV) signals within broadband ISDN (BISDN) is described. It is intended for the delivery of high-quality video to the home or office at the CCITT recommended H4 rate of roughly 130 Mb/s. The scheme uses intrafield processing only, resulting in relatively low complexity for hardware implementation, very desirable error propagation properties and the elimination of motion-related artifacts. The use of the shortest kernal (two-tap) quadrature mirror filter (QMF) pairs for signal decomposition and reconstruction minimizes quantization noise spread and further reduces complexity. Through successive QMF operations, the signal is decomposed into six bands to achieve low noise coding not normally associated with the shortest kernal implementations. In effect, the coding scheme is identical to a Hadamard transform (HT) with nonconstant block sizes. When combined with entropy coding, this approach achieves the roughly 5.6:1 compression desired while retaining very high image quality. >read more
Citations
More filters
Journal ArticleDOI
An entropy coding system for digital HDTV applications
S.-M. Lei,Ming-Ting Sun +1 more
TL;DR: A parallel structured VLC decoder which decodes each codeword in one clock cycle regardless of its length is introduced and the required clock rate of the decoder is lower, and parallel processing architectures become easy to adopt in the entropy coding system.
Patent
Systems and methods for coding even fields of interlaced video sequences
TL;DR: Multi-mode predictive interpolative systems and methods for interlaced video sequences use past even fields as well as current and past odd fields to code current even fields as discussed by the authors. But this method is not suitable for video recognition.
Patent
Television signal sub-band coder/decoder with different levels of compatibility
TL;DR: In this paper, a coder comprising banks of analysis filters (26, 27) for partitioning the spatio-temporal spectrum of each television image into sub-bands is coupled to devices for differential coding (30i, 31i, 32i) for separately coding the signals obtained in each subband.
Proceedings ArticleDOI
VLSI implementation of an entropy coder and decoder for advanced TV applications
TL;DR: Experimental prototype high-speed entropy coder and decoder chips with parallel architectures, designed in a 1.2- mu m double-metal CMOS technology, expected to meet a speed objective of 52 MHz with margin.
Journal ArticleDOI
High-quality coding of the even fields based on the odd fields of interlaced video sequences
F.-M. Wang,Dimitris Anastassiou +1 more
TL;DR: A high-quality and high-compression technique is presented for coding the even fields of digital interlaced video, assuming that the odd fields have already been coded, and a compatible HDTV coding scheme based on the proposed technique is outlined.
References
More filters
Journal ArticleDOI
The Laplacian Pyramid as a Compact Image Code
Peter J. Burt,Edward H. Adelson +1 more
TL;DR: A technique for image encoding in which local operators of many scales but identical shape serve as the basis functions, which tends to enhance salient image features and is well suited for many image analysis tasks as well as for image compression.
Proceedings ArticleDOI
A filter family designed for use in quadrature mirror filter banks
TL;DR: This paper discusses a family of filters that have been designed for Quadrature Mirror Filter (QMF) Banks that provide a significant improvement over conventional optimal equiripple and window designs when used in QMF banks.
Proceedings ArticleDOI
Sub-band coding of digital images using symmetric short kernel filters and arithmetic coding techniques
D. Le Gall,A. Tabatabai +1 more
TL;DR: A technique for designing symmetric short tap filters is presented, and it is shown that such filters can be easily implemented by using simple arithmetic operations (e.g. addition and multiplication).
Journal ArticleDOI
Extension of finite length signals for sub-band coding
Gunnar Karlsson,Martin Vetterli +1 more
TL;DR: In this article, the authors investigated the problem of sub-band coding of images and showed that extending the signal so that continuity is maintained may be a sufficient remedy, as shown in an image coding example.
Journal ArticleDOI
A probabilistic model for run-length coding of pictures
TL;DR: A first-order Markoff process representation for pictures is proposed in order to study the picture coding system known as run-length coding (differential-coordinate encoding), and is shown to yield an insight into the run- length coding system which might not otherwise be obtained.