Multiresolution coding techniques for digital television: A review

Vetterli, Martin; Uz, K.M.

doi:10.1007/bf01942041

Cited by 36 publications

(6 citation statements)

References 44 publications

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“…For the two-region case of the broadcast channel, we assume an operating point of ( R l , R ? ) = (C1(cr,p),Ca(~,P)), as given by Equations (6) and (7). Only uniform population density, corresponding to C = 0 in Equation (35), lends itself to an analytic solution and hence is the only case discussed here.…”

Section: Orthogonal Broadcast Channelmentioning

confidence: 98%

“…Standard digital broadcast techniques are not capable of supporting stepwise, soft degraded reception, whereas an embedded signaling scheme possesses this property. The graceful degradation property is gaining more momentum as a number of contending all-digital high-definition TV (HDTV) proposals are incorporating some form of soft Spurring more interest in this area are the numerous research publications on the compression of audio and video signals using multiresolution coding techniques [7]. Decomposed into a number of resolutions or subbands, the signal is effectively deconstructed in the form of a hierarchical data structure with varying degrees of perceptual significance.…”

Section: Introductionmentioning

confidence: 99%

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Analysis of a Dual‐Rate Transmission Scheme for Gaussian Broadcast Channels

Sajadieh¹,

Kschischang

Leon-Garcia

2000

Trans Emerging Tel Tech

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Abstract. In a broadcast channel, a single transmitter communicates to receivers with different channel capacities, a typical example of which is the over-the-air television broadcasting. A natural question that arises is evaluation of the optimal information transfer rate in such an environment. For the two-receiver case, we examine various transmission scenarios in this environment and focus on the theoretically optimal superposition scheme, where the information intended for the better channel is superimposed on the portion of information common to both receivers. As a result, a basic grade of service is maintained throughout the entire coverage area in addition to a higher quality service offered to the receivers with better reception conditions. Using end-to-end distortion and coverage channel signal-to-noise ratio threshold measures, three specific embedded signaling modes are introduced. We demonstrate that a generalized embedding scheme provides a practical trade-off between distortion and coverage radius. The scheme is also formulated in terms of an optimization problem, seeking the best embedding factor for a given application. To verify the theoretical results, we idealize a dual rate transmission system over a Gaussian broadcast channel, in which receivers are distributed according to a circularly symmetric exponential pdf. The numerical results indicate that this model offers a higher per capita data rate comparing to the conventional single rate transmission systems. Application of this multirate broadcast holds promise for multiresolution transmission of digital audio and high definition television.

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Section: Orthogonal Broadcast Channelmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

Analysis of a Dual‐Rate Transmission Scheme for Gaussian Broadcast Channels

Sajadieh¹,

Kschischang

Leon-Garcia

2000

Trans Emerging Tel Tech

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“…The result is a more heterogeneous network with regard to terminal capabilities and connection speed. Early solutions that suggested different streams for different quality levels were soon replaced with more scalable source coders [10]. There are several ways of achieving scalability: (i) temporal, (ii) resolution, and (iii) quality to mention a few.…”

Section: A Source Codingmentioning

confidence: 99%

“…), will define the maximum reachable radius, which is denoted . Given some assumed target system bit error probability, , can be expressed as (10) where is the solution to . Consideration of this one channel case provides, , as a useful reference point which allows generalization for later optimization.…”

Section: A Broadcast Channelmentioning

confidence: 99%

A Computability Strategy for Optimization of Multiresolution Broadcast Systems: A Layered Energy Distribution Approach

Sehlstedt

LeBlanc

2006

IEEE Trans. on Broadcast.

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Abstract-This paper investigates the possible system gain for a multiresolution broadcast system using multilayer transmission of multiresolution data by utilizing nonuniform layer transmission energies. It shows how to find the energy distribution that maximizes the system performance, measured in the form of a sum of a weighted layer values population product (representing possible revenue for service providers).Through the introduction of the relative population coverage function ( ) it is shown for a layer system that in many cases when ( ) is a concave function (equivalent to ( ) being convex) it is possible to reduce what seems to be an -dimensional problem to line searches. The paper also shows how the relative population coverage function can be constructed in two ways. The first uses analytic models for signal strength and population coverage (Uniform and Rayleigh). The second uses numerical signal strength and population estimates in grid format.The paper also includes examples to illustrate how the method works and the performance gain it provides. One of the examples uses actual grid estimates for an example transmitter located in Luleå, Sweden.

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“…Spatial scalability using a spatial pyramid is one technique to achieve this goal and is known to have several advantages [6]. An alternative compatible coding scheme based on subband decomposition is given in [2].…”

Section: Scalable Video Codermentioning

confidence: 99%

Scalable Video Coding With Adaptive Video Interpolation

Bayrakeri

Mersereau²

1996 IEEE International Conference on Acoustics, Speech, and Signal Processing Conference Proceedings

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In this paper, we present a two layer, scalable video cod-A two layer scalable video coding scheme based on a spatiotemporal pyramid is presented. The key component is a novel, effective spatio-temporal video interpolator which is proposed to yield the best prediction from the reduced resolution layer to the higher resolution layer. The proposed video interpolator gives visually correct predicted images and minimizes spatial and the temporal prediction artifacts such as aliasing, uncovered background and blocking effects. Independent bit allocation, which is one of the main requirements of scalable coding, is provided by decoupling of the layers through multistage quantization. The bit rate for the lower resolution channel is directly assigned to the lower resolution layer. However, the rate for the higher resolution channel is distributed between upgrading the lower resolution layer and the higher resolution layer. The decoupled layers are encoded by an MPEG like coder. The described scheme is for a two-layer coder but it is easily extendable to pyramids with more layers.ing scheme based on a spatial pyramid. A spatio-teInpora1 video interpolator is proposed for optimum prediction of the higher resolution layers. The video interpolator interactively combines the spatio-temporal information in a spatially varying way. It reduces artifacts, such as uncovered background, blocking effects, and aliasing by selecting the least distorted regions from each of the temporally predicted and/or spatially interpolated images. Although spatial scalability infers dependencies between the layers, compatible coding requires independent bit allocation for each channel, i.e the rate allocated to the lower resolution layer should not affect the performance of the higher resolution layer. Independent bit allocation is provided by decoupling the layers to some extent by multistage quantization, which is applied to the lower resolution layer.The paper is organized as follows. Section 2 describes the basic unit of the scalable video coder. Section 3 presents a detailed description of the proposed video interpolator. Section 4 provides the scalable coding bit allocation based

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Multiresolution coding techniques for digital television: A review

Cited by 36 publications

References 44 publications

Analysis of a Dual‐Rate Transmission Scheme for Gaussian Broadcast Channels

Analysis of a Dual‐Rate Transmission Scheme for Gaussian Broadcast Channels

A Computability Strategy for Optimization of Multiresolution Broadcast Systems: A Layered Energy Distribution Approach

Scalable Video Coding With Adaptive Video Interpolation

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