Dual frame motion compensation for a rate switching network

Chellappa, Vijay; Cosman, Pamela C.; Voelker, Geoffrey M.

doi:10.1109/acssc.2003.1292243

Cited by 8 publications

(5 citation statements)

References 7 publications

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“…In [11], the concept of the dual frame was simulated in a low bandwidth situation by the block-partitioning prediction and the utilization of two time differential reference frames. Challappa et al [12] have found that using a high quality frame as a reference frame for the following frames will benefit the overall performance. Challappa et al [13] and [14] have shown that peak signalto-noise ratio (PSNR) is influenced by the different extra bandwidth and the period giving to the LTR.…”

Section: Introductionmentioning

confidence: 99%

Dual Frame Motion Compensation With Optimal Long-Term Reference Frame Selection and Bit Allocation

Liu

Zhao

et al. 2010

IEEE Trans. Circuits Syst. Video Technol.

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In dual frame motion compensation (DFMC), one short-term reference frame and one long-term reference frame (LTR) are utilized for motion compensation. The performance of DFMC is heavily influenced by the jump updating parameter and bit allocation for the reference frames. In this paper, first the rate-distortion performance analysis of motion compensated prediction in DFMC is presented. Based on this analysis, an adaptive jump updating DFMC (JU-DFMC) with optimal LTR selection and bit allocation is proposed. Subsequently, an error resilient JU-DFMC is further presented based on the error propagation analysis of the proposed adaptive JU-DFMC. The experimental results show that the proposed adaptive JU-DFMC achieves better performance over the existing JU-DFMC schemes and the normal DFMC scheme, in which the temporally most recently decoded two frames are used as the references. The performance of the adaptive JU-DFMC is significantly improved for video transmission over noisy channels when the specified error resilience functionality is introduced.

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Section: Introductionmentioning

confidence: 99%

Dual Frame Motion Compensation With Optimal Long-Term Reference Frame Selection and Bit Allocation

Liu

Zhao

et al. 2010

IEEE Trans. Circuits Syst. Video Technol.

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“…In our preliminary work [11], we considered dual-frame motion compensation in the context of a rate-switching network. The "Always Best Connected" network is a service that provides a seamless transition among various connections at different rates [12], always connecting the user using the best connection available at the moment.…”

Section: Introductionmentioning

confidence: 99%

“…The "Always Best Connected" network is a service that provides a seamless transition among various connections at different rates [12], always connecting the user using the best connection available at the moment. In this context, we found that, when switching from a high bandwidth connection (e.g., Ethernet at 10Mbps) to a low-bandwidth connection (e.g., GPRS at 16kbps), the codec might benefit from retaining the last frame from the high-quality connection and using it as a reference frame in a multiple frame prediction scheme [11].…”

Section: Introductionmentioning

confidence: 99%

Dual Frame Motion Compensation With Uneven Quality Assignment

Chellappa

Cosman

Voelker

2008

IEEE Trans. Circuits Syst. Video Technol.

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Video codecs that use motion compensation have shown PSNR gains from the use of multiple frame prediction, in which more than one past reference frame is available for motion estimation. In dual frame motion compensation, one short-term reference frame and one long-term reference frame are available for prediction. In this paper, we propose a dual frame motion compensation technique that allocates bits unevenly among frames to periodically create a high-quality frame that serves as the long-term reference frame for some time. By modifying an MPEG-4 encoder to use this technique on a set of video sequences, we show that it outperforms a normal dual frame motion compensation scheme in which the long-term reference frames are regular frames that are not allocated any extra rate.

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“…At the cost of extra memory storage and extra complexity for searching, multiple frame prediction has been shown to provide a clear advantage in compression performance. Papers on multiple reference frame motion compensation include [4,5,6,7,8,9,10,11,12,13].…”

Section: Introductionmentioning

confidence: 99%

“…In dual frame video coding [7,10,11,12,13], two frames are used for inter prediction, a short-term reference (STR) and a long-term reference (LTR), as shown in Figure 1. Both encoder and decoder store LTR and STR frames.…”

Section: Introductionmentioning

confidence: 99%

Dual Frame Video Coding with Pulsed Quality and a Lookahead Window

Tiwari

Cosman

Data Compression Conference (DCC'06)

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In dual frame video coding, one short-term reference frame and one longterm reference frame are available for motion compensation. In prior research, it was shown that overall video quality was improved by allocating bits unevenly among frames so as to periodically create a high-quality frame that could serve as the long-term reference frame for some time. We extend this work to a cognitive radio scenario where pulses of extra bandwidth can be rented by the second, but rental agreements can be cancelled on short notice if the legacy user of that spectrum returns. With a scalable video coder, this pulse of extra bandwidth can be used to improve the quality of the current frame being encoded, or of the past long term frame, or can be spent on future frames if the encoder has access to them in advance. We compare these various uses to explore the advantages of allocating some of the available bandwidth to past or future frames.

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Dual frame motion compensation for a rate switching network

Cited by 8 publications

References 7 publications

Dual Frame Motion Compensation With Optimal Long-Term Reference Frame Selection and Bit Allocation

Dual Frame Motion Compensation With Optimal Long-Term Reference Frame Selection and Bit Allocation

Dual Frame Motion Compensation With Uneven Quality Assignment

Dual Frame Video Coding with Pulsed Quality and a Lookahead Window

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