Results 1 - 10 of 2,484

Rate/distortion Performance Of Fractal Transforms For Image Compression

by Stuart Woolley, Donald M Monro , 1994
"... this paper we have investigated the effects of various complexity options on the rate/distortion performance of the BFT. Our results show that considering reflections and rotations produces no real advantages in terms of fidelity at a particular compression ratio. It also appears that searching of t ..."
Abstract - Cited by 12 (0 self) - Add to MetaCart
this paper we have investigated the effects of various complexity options on the rate/distortion performance of the BFT. Our results show that considering reflections and rotations produces no real advantages in terms of fidelity at a particular compression ratio. It also appears that searching

THEORETICAL ANALYSIS OF THE RATE-DISTORTION PERFORMANCE

by Of A Light, Field Streaming System
"... Abstract — Large image-based rendering data sets such as light fields require efficient compression and random access to individual images for applications such as interactive streaming to a remote user. In our earlier work, we propose a theoretical framework to analyze the trade-off between compres ..."
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compression efficiency and random access. In this current paper, we extend the theoretical framework by calculating distortion for a more general rendering scenario. We then use this result to derive the theoretical rate-distortion function for a streaming session, and show that the simulation results have

ON THE EMPIRICAL RATE-DISTORTION PERFORMANCE OF COMPRESSIVE SENSING

by Adriana Schulz, Luiz Velho, Eduardo A. B. Da Silva
"... Compressive Sensing (CS) is a new paradigm in signal acquisition and compression. In compressive sensing, a compressible signal is acquired using much less measurements than the ones required by Nyquist theorem, provided that it is sparse in some transform domain. Recovery of the signal from the mea ..."
Abstract - Cited by 13 (0 self) - Add to MetaCart
many bits one spends for a given image quality. Although several theoretical results regarding the rate-distortion performance of CS have been published recently, there are not too many practical image compression results available. The main goal of this paper is to carry out an empirical analysis

Rate-Distortion Performance for Joint Source and Channel Coding

by Ruf Michael J, Modestino James W, Michael J. Ruf, James W. Modestino , 1996
"... This paper describes a methodology for evaluating the rate-distortion behavior of combined source and channel coding schemes with particular application to images. In particular, we demon-strate use of the operational rate-distortion function to obtain the optimum tradeoff between source coding accu ..."
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accuracy and channel error protection under the constraint of a fixed transmission band-width. Furthermore, we develop information-theoretic bounds on performance and demonstrate that our combined source-channel coding methodology results in rate-distortion performance which closely approach

On the Rate-Distortion Performance of Dynamic Bitstream Switching Mechanisms

by Bo Xie, Wenjun Zeng - IEEE International Conference on Multimedia and Expo (ICME , 2005
"... Bitstream switching is an effective way to deal with bandwidth variation in transmitting multimedia over time-varying channels. A number of bitstream switching mechanisms have been proposed to reduce the potential error drift introduced by bitstream switching, often without explicitly taking into ac ..."
Abstract - Cited by 1 (0 self) - Add to MetaCart
into account the impact of the switching on the bandwidth and delay requirements in their performance analysis. This paper studies the relative rate-distortion (R-D) performance of some of these bitstream streaming mechanisms by extending a delay-aware R-D optimized dynamic bitstream switching framework we

HOW DOES SUBSAMPLING OF MULTI-VIEW IMAGES AFFECT THE RATE-DISTORTION PERFORMANCE?

by Keita Takahashi , Takeshi Naemura
"... ABSTRACT This paper introduces a new theoretical model on the rate-distortion performance in transmitting multi-view image data. To reduce the data amount, a practical solution is just decreasing the number of images by subsampling. The questions we focus on are (i) how much bit-rate can be reduced ..."
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ABSTRACT This paper introduces a new theoretical model on the rate-distortion performance in transmitting multi-view image data. To reduce the data amount, a practical solution is just decreasing the number of images by subsampling. The questions we focus on are (i) how much bit-rate can

Rate Distortion Performance in Coding Band-Limited Sources by Sampling and Dithered Quantization

by Ram Zamir, Meir Feder - IEEE Trans. Inform. Theory , 1995
"... The rate-distortion characteristics of a scheme for encoding continuous-time band-limited stationary sources, with a prescribed band, is considered. In this coding procedure the input is sampled at Nyquist's rate or faster, the samples undergo dithered uniform or lattice quantization, using sub ..."
Abstract - Cited by 22 (5 self) - Add to MetaCart
subtractive dither, and the quantizer output is entropy coded. The rate-distortion performance, and the trade-off between the sampling rate and the quantization accuracy is investigated, utilizing the observation that the coding scheme is equivalent to an additive noise channel. It is shown that the mean

Operational Rate–Distortion Performance of Single–source and Distributed Compressed Sensing

by Giulio Coluccia, Aline Roumy, Enrico Magli, Senior Member
"... Abstract—We consider correlated and distributed sources with-out cooperation at the encoder. For these sources, we derive the best achievable performance in the rate-distortion sense of any distributed compressed sensing scheme, under the constraint of high–rate quantization. Moreover, under this mo ..."
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Abstract—We consider correlated and distributed sources with-out cooperation at the encoder. For these sources, we derive the best achievable performance in the rate-distortion sense of any distributed compressed sensing scheme, under the constraint of high–rate quantization. Moreover, under

Analysis on Rate-distortion Performance of Compressive Sensing for Binary Sparse Source

by Zhouchen Lin, Bing Zeng, See Profile, Feng Wu, Jingjing Fu, Zhouchen Lin, Bing Zeng
"... All in-text references underlined in blue are linked to publications on ResearchGate, letting you access and read them immediately. ..."
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All in-text references underlined in blue are linked to publications on ResearchGate, letting you access and read them immediately.

On the rate-distortion performance and computational efficiency of the karhunen-loeve transform for lossy data compression,” Image Processing

by Hanying Feng, Student Member, Michelle Effros - IEEE Transactions on , 2002
"... Abstract—We examine the rate-distortion performance and computational complexity of linear transforms for lossy data compression. The goal is to better understand the performance/complexity tradeoffs associated with using the Karhunen–Loève transform (KLT) and its fast approximations. Since the opti ..."
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Abstract—We examine the rate-distortion performance and computational complexity of linear transforms for lossy data compression. The goal is to better understand the performance/complexity tradeoffs associated with using the Karhunen–Loève transform (KLT) and its fast approximations. Since
Results 1 - 10 of 2,484