A self-governing rate buffer control strategy for pseudoconstant bit rate video coding

Chen, C.-T.; Wong, Andria H.

doi:10.1109/83.210865

Cited by 40 publications

(16 citation statements)

References 3 publications

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“…It should also be noted that since we consider the problem of visually weighted quantization [17], [18] as a separate one, we only use the normalized buffer fullness part in the approximation of the quantizer step-size. In other words, we considered the visual impact of the macroblock (represented by the parameter in (6) and (13)) as constant.…”

Section: A Mse-based R-d Improvementmentioning

confidence: 99%

On-line improvements of the rate-distortion performance in MPEG-2 rate control

Grecos

Jiang

2003

IEEE Trans. Circuits Syst. Video Technol.

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Existing rate-control research can be summarized into two approaches. One attempts to optimize the rate-distortion (R-D) characteristics of the input source before any decisions about the quantizer step-size assignment are made. As such, rate-control schemes out of this approach incur iterative procedures, high computational cost and encoding delays. The other approach is highlighted by direct buffer-state feedback techniques in predicting the R-D characteristics based on either probabilistic models or on historic information. Both approaches trade suboptimality in the prediction of R-D characteristics for reduced computational cost and delay. In this paper, we combine the simplicity of the predictive models with the high-complexity R-D approaches to design effective rate-control algorithms to exploit the advantages of both approaches: low encoding delay and low complexity, yet optimized estimation of the R-D statistics. Extensive experiments show that improvements over the MPEG-2 scheme with gains of 0.5-1 dB per frame are achieved by the proposed schemes for a variety of test sequences when the same target bit rates are maintained.

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Section: A Mse-based R-d Improvementmentioning

confidence: 99%

On-line improvements of the rate-distortion performance in MPEG-2 rate control

Grecos

Jiang

2003

IEEE Trans. Circuits Syst. Video Technol.

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“…In this paper, we choose to be a frame period. The majority of the schemes proposed to date assume that the feedback is specified in terms of a change in the quantization factor [5]- [7] used in the compression process. In this paper, we assume that the feedback is specified in terms of a change in the bit rate .…”

Section: Adaptation By Temporal Smoothingmentioning

confidence: 99%

“…Most approaches proposed to date [5]- [7] are ad hoc and lack an analytical framework. For instance, there is generally a tradeoff between the smoothness-of-quality and buffer fluctuations criteria (see Section V), and without an analytical framework, these approaches do not lend themselves to a systematic study of this tradeoff.…”

Section: Adaptation By Temporal Smoothingmentioning

confidence: 99%

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A control-theoretic approach to adapting VBR compressed video for transport over a CBR communications channel

Liew

Tse²

1998

IEEE/ACM Trans. Networking

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Abstract-Future broad-band communications networks are expected to be dominated by video and image traffic. Variable bit-rate (VBR) video compression is generally preferred to constant bit-rate (CBR) compression because constant image quality can be provided. In contrast, CBR transport is preferred to VBR transport from the networking standpoint because of its simplicity. This paper studies the important issue of adapting VBR-compressed video for transport over a CBR channel. We focus on temporal traffic smoothing using an elastic buffer. The target image quality and the output rate of the video encoder is controlled by feedback based on the buffer-occupancy level. Previous adaptation schemes are not readily analyzable. An analyzable control-theoretic adaptation framework is proposed. It allows systematic and quantitative investigation of issues such as stability, robustness against scene changes, robustness against image-quality oscillations due to coding-mode switching, and tradeoffs between image-quality and buffer-occupancy (delay) fluctuations. Perhaps more importantly, the framework opens up many new possibilities for further research.

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“…Many schemes for video transmission have been explored since the mid-90s [18], [19]. Three main approaches have proven effective to tackle the optimization problem above: dynamic programming techniques [7], Lagrange relaxation methods [20], [21], and steepest descent algorithms [8], [22], [23].…”

Section: Overview Of Video Transmission Schemesmentioning

confidence: 99%

FAST Rate Allocation for JPEG2000 Video Transmission Over Time-Varying Channels

Jimenez-Rodriguez

Aulí-Llinàs

Marcellin

2013

IEEE Trans. Multimedia

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Abstract-This work introduces a rate allocation method for the transmission of pre-encoded JPEG2000 video over timevarying channels, which vary their capacity during video transmission due to network congestion, hardware failures, or router saturation. Such variations occur often in networks and are commonly unpredictable in practice. The optimization problem is posed for such networks and a rate allocation method is formulated to handle such variations. The main insight of the proposed method is to extend the complexity scalability features of the FAst rate allocation through STeepest descent (FAST) algorithm. Extensive experimental results suggest that the proposed transmission scheme achieves near-optimal performance while expending few computational resources.

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A self-governing rate buffer control strategy for pseudoconstant bit rate video coding

Cited by 40 publications

References 3 publications

On-line improvements of the rate-distortion performance in MPEG-2 rate control

On-line improvements of the rate-distortion performance in MPEG-2 rate control

A control-theoretic approach to adapting VBR compressed video for transport over a CBR communications channel

FAST Rate Allocation for JPEG2000 Video Transmission Over Time-Varying Channels

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