Model-based real-time progressive transmission of images over noisy channels

Charfi, Y.; Hamzaoui, Raouf; Saupe, Dietmar

doi:10.1109/wcnc.2003.1200470

Cited by 24 publications

(14 citation statements)

References 24 publications

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“…as analytical models [9] of the operational distortion curves of standard [512 × 512] greyscale Lena image, encoded respectively by JPEG2000 and SPIHT. It is worth noting that in (1) and (2) x = K Ns is the compression ratio expressed in bit per pixel, and y is the associated residual MSE distortion.…”

Section: Resultsmentioning

confidence: 99%

Determination of Optimal Distortion-Based Protection in Progressive Image Transmission: a Heuristic Approach

Torquati

Fresia

Lavagetto

2007

2007 IEEE International Conference on Communications

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In this paper a method for the fast determination of distortion-based optimal unequal error protection (UEP) of bitstreams generated by embedded image coders is described. The UEP problem is reduced to the more general problem of finding a path in a graph, where each path of the graph represents a possible protection policy and the best path is that one inducing minimal distortion. The problem is combinatorially complex and excludes a brute force approach. The solution is provided by applying heuristic information from the problem domain to reduce search complexity. In particular, we use graph search procedure A, well known in the field of artificial intelligence, to avoid exhaustive search. Numerical results show that this technique outperforms the methods presented in [1], [2], in terms of Mean Square Error (MSE) distortion and computational complexity.

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Section: Resultsmentioning

confidence: 99%

Determination of Optimal Distortion-Based Protection in Progressive Image Transmission: a Heuristic Approach

Torquati

Fresia

Lavagetto

2007

2007 IEEE International Conference on Communications

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“…Charfi et al [161] have recently proposed a more accurate parametric Weibull model where the parameters are estimated from the particular image. In order to fit their D-R estimator to the actual D-R curve, they required decoding four and sometimes eight exact points on the actual D-R curve.…”

Section: Distortion-rate Function and Jsccmentioning

confidence: 99%

A Video Transmission System for Severely Degraded Channels

Pearlman¹,

Saulnier²

2006

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“…For embedded wavelet coders such as SPIHT, JPEG2000 [17], and 3-D SPIHT a solution may consist of estimating the distortion-rate points in the wavelet domain during the encoding (see [13] for SPIHT). An alternative is to quickly compute a few distortion-rate points, fit them to a parametric model, and use the model instead of the true distortion-rate function [18].…”

Section: Source and Channel Statisticsmentioning

confidence: 99%

Real-time error protection of embedded codes for packet erasure and fading channels

Stankovic

Hamzaoui

Xiong

2004

IEEE Trans. Circuits Syst. Video Technol.

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Abstract-Reliable real-time transmission of packetized embedded multimedia data over noisy channels requires the design of fast error control algorithms. For packet erasure channels, efficient forward error correction is obtained by using systematic Reed-Solomon (RS) codes across packets. For fading channels, state-of-the-art performance is given by a product channel code where each column code is an RS code and each row code is a concatenation of an outer cyclic redundancy check code and an inner rate-compatible punctured convolutional code. For each of these two systems, we propose a low-memory linear-time iterative improvement algorithm to compute an error protection solution. Experimental results for the two-dimensional and three-dimensional set partitioning in hierarchical trees coders showed that our algorithms provide close to optimal average peak signal-to-noise ratio performance, and that their running time is significantly lower than that of all previously proposed solutions.

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Model-based real-time progressive transmission of images over noisy channels

Abstract: Abstract-

Cited by 24 publications

References 24 publications

Determination of Optimal Distortion-Based Protection in Progressive Image Transmission: a Heuristic Approach

Determination of Optimal Distortion-Based Protection in Progressive Image Transmission: a Heuristic Approach

A Video Transmission System for Severely Degraded Channels

Real-time error protection of embedded codes for packet erasure and fading channels

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