Proceedings ArticleDOI
Multi-resolution based algorithms for low bit-rate image coding
K.H. Goh,John J. Soraghan,Tariq S. Durrani +2 more
- Vol. 3, pp 285-289
TLDR
A new efficient adaptive bit-plane run-length coding of the wavelet transform coefficients of images outperforms the JPEG at low bit-rate and is designed for colour video conferencing applications.Abstract:
Novel wavelet transform based schemes for coding still images and image sequences are presented. The still image codec uses a new efficient adaptive bit-plane run-length coding of the wavelet transform coefficients of images. The main merit of this coding scheme is its simplicity requiring no training or storage of codebooks and it outperforms the JPEG at low bit-rate. For image sequence coding, a very low bit-rate sub-band motion estimation/compensation video codec designed for colour video conferencing applications is presented. A full system with buffer feedback control is designed. Simulation results of transmitting colour image sequences at 9.6 to 19.2 kbit/s are given. >read more
Citations
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Journal ArticleDOI
Visual data compression for multimedia applications
Touradj Ebrahimi,Murat Kunt +1 more
TL;DR: This paper provides the reader with a tutorial on major visual data-compression techniques and a list of references for further information as the details of each method are provided.
Journal ArticleDOI
Efficient high-speed/low-power pipelined architecture for the direct 2-D discrete wavelet transform
TL;DR: A proposed architecture for the direct two-dimensional discrete wavelet transform (DWT), which performs a complete dyadic decomposition of an N/ Sub 0//spl times/N/sub 0/ image in approximately N/ sub 0//sup 2//4 clock cycles (ccs), which consistently speeds up the performance of other known architectures.
Patent
Image processing apparatus and method and storage medium storing steps realizing such method
Hiroshi Kajiwara,Makoto Sato +1 more
TL;DR: In this paper, a hierarchical output unit for distributing each bit of variable length encoded data corresponding to each coefficient and obtained through variable length encoding by the variable length encoder, to a plurality of bit planes each corresponding to a level of each bit, and hierarchically and sequentially outputting the plurality of bits planes.
Very Low Bit Rate Coding of Visual Information - A Review
TL;DR: The aim of this paper is to provide the readers with an overview of these approaches as well as with a list of references for further information of the details of each technique.
Book ChapterDOI
New trends in very low bit rate video coding—an overview
TL;DR: This chapter gives a review of high-compression image-coding techniques and provides overviews of video coding techniques aimed at very low bit rates, namely object-oriented, model-based, and fractal-based techniques.
References
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Journal ArticleDOI
Image coding using wavelet transform
TL;DR: A scheme for image compression that takes into account psychovisual features both in the space and frequency domains is proposed and it is shown that the wavelet transform is particularly well adapted to progressive transmission.
Journal ArticleDOI
Image compression using the 2-D wavelet transform
A.S. Lewis,G. Knowles +1 more
TL;DR: The 2-D orthogonal wavelet transform decomposes images into both spatial and spectrally local coefficients and gave high to acceptable quality reconstruction at compression ratios for the Miss America and Lena monochrome images.
Journal ArticleDOI
Motion-compensated wavelet transform coding for color video compression
Ya-Qin Zhang,Sohail Zafar +1 more
TL;DR: A variable-block-size multiresolution motion compensation scheme in which the size of a block is adapted to its level in the wavelet pyramid is proposed, and it is shown that the coding approach has a superior performance in terms of the peak-to-peak signal- to-noise ratio as well as the subjective quality.
Proceedings ArticleDOI
An embedded wavelet hierarchical image coder
TL;DR: A simple, yet remarkably effective, image compression algorithm that has the property that the bits in the bit stream are generated in order of importance, yielding fully hierarchical image compression suitable for embedded coding or progressive transmission is described.
Journal ArticleDOI
Video compression using 3D wavelet transforms
A.S. Lewis,G. Knowles +1 more
TL;DR: This letter has found that using the wavelet transform in time and space, combined with a multiresolution approach, leads to an efficient and effective method of compression.