SKIP Prediction for Fast Rate Distortion Optimization in H.264

Saha, Avishek; Mallick, Kallol; Mukherjee, Jayanta; Sural, Shamik

doi:10.1109/tce.2007.4341599

Cited by 22 publications

(15 citation statements)

References 21 publications

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“…1. Conventional SKIP is a special mode in which the macroblock is normally reconstructed by motion-compensated prediction using a motion vector that is derived as the median value of the motion vectors of the left, top and top-right macroblocks [17]. The VSP SKIP mode differs from the conventional SKIP mode in that the macroblock is reconstructed using the macroblock at the same position in a synthesized version of the current frame [2].…”

Section: Preliminariesmentioning

confidence: 99%

Bayesian Early Mode Decision Technique for View Synthesis Prediction-Enhanced Multiview Video Coding

Khattak

Hamzaoui

Maugey

et al. 2013

IEEE Signal Process. Lett.

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Abstract-View synthesis prediction (VSP) is a coding mode that predicts video blocks from synthesised frames. It is particularly useful in a multi-camera setup with large inter-camera distances. Adding a VSP-based SKIP mode to a standard Multiview Video Coding (MVC) framework improves the rate-distortion (RD) performance but increases the time complexity of the encoder. This letter proposes an early mode decision technique for VSP SKIP-enhanced MVC. Our method uses the correlation between the RD costs of the VSP SKIP mode in neighbouring views and Bayesian decision theory to reduce the number of candidate coding modes for a given macroblock. Simulation results showed that our technique can save up to 36.20% of the encoding time without any significant loss in RD performance.Index Terms-Fast mode decision, multiview video coding, view synthesis prediction.

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Section: Preliminariesmentioning

confidence: 99%

Bayesian Early Mode Decision Technique for View Synthesis Prediction-Enhanced Multiview Video Coding

Khattak

Hamzaoui

Maugey

et al. 2013

IEEE Signal Process. Lett.

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“…A number of approaches [5][6][7][8][9][10][11][12][13][14][15][16] have been reported for H.264/AVC to reduce the encoder complexity. The main idea of algorithms is to eliminate unnecessary modes with different block sizes and to perform the RDO process for possible block sizes only.…”

Section: Introductionmentioning

confidence: 99%

“…The main idea of algorithms is to eliminate unnecessary modes with different block sizes and to perform the RDO process for possible block sizes only. In some approaches [5][6][7][8], SKIP mode is focused in reducing the encoder complexity. The early SKIP mode decision algorithm [5,6] is proposed based on four conditions.…”

Section: Introductionmentioning

confidence: 99%

“…Additional conditions [7] for SKIP mode are proposed based on spatial and temporal neighborhood information to improve the performance of the early SKIP mode decision algorithm [6]. Saha et al [8] employed the sum-of-absolute-transformed-differences to predict the SKIP mode. In these algorithms [5][6][7][8], since coding modes excluding the SKIP mode are considered as a single group, if the SKIP mode is not determined as the optimal mode, the RDO process is executed for all coding modes.…”

Section: Introductionmentioning

confidence: 99%

“…Saha et al [8] employed the sum-of-absolute-transformed-differences to predict the SKIP mode. In these algorithms [5][6][7][8], since coding modes excluding the SKIP mode are considered as a single group, if the SKIP mode is not determined as the optimal mode, the RDO process is executed for all coding modes. Accordingly, the performance improvement is limited in sequences with fast motion or detailed regions.…”

Section: Introductionmentioning

confidence: 99%

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Fast intermode decision algorithm based on general and local residual complexity in H.264/AVC

et al. 2013

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The state-of-the-art video coding standard H.264/AVC achieves significant coding performance by adopting variable block sizes for motion estimation (ME) and mode decision. However, this technique brings out high computational complexity since the optimal mode is determined by exhaustively performing rate-distortion optimization (RDO) on each coding mode with different block sizes. In this paper, the fast intermode decision algorithm is proposed to reduce the computational complexity. Based on the high correlation between the residual error of ME and the optimal block size, general residual complexity (GRC) and local residual complexity (LRC) are defined. According to MB activity evaluated on GRC and LRC, candidate intermodes are determined and RDO processes are only performed on selected intermodes. The experimental results demonstrate that the proposed algorithm achieves time saving by 63% on average with negligible degradation of coding efficiency.

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A fast rate-distortion optimization algorithm for H.264/AVC codec

Hsia

Hsu

2011

SIViP

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SKIP Prediction for Fast Rate Distortion Optimization in H.264

Cited by 22 publications

References 21 publications

Bayesian Early Mode Decision Technique for View Synthesis Prediction-Enhanced Multiview Video Coding

Bayesian Early Mode Decision Technique for View Synthesis Prediction-Enhanced Multiview Video Coding

Fast intermode decision algorithm based on general and local residual complexity in H.264/AVC

A fast rate-distortion optimization algorithm for H.264/AVC codec

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