Fast Inter Mode Prediction for P Slices in the H264 Video Coding Standard

Grecos, Christos; Yang, Ming

doi:10.1109/tbc.2005.846192

Cited by 86 publications

(45 citation statements)

References 4 publications

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“…Yu, G. R. Martin and H. Park (2008) proposed a novel skip mode detection technique based on three layers. Considering that skip macroblocks tend to occur in clusters (in a similar idea to (Grecos, 2005), spatial and temporal skip mode information is used in the first layer. If the co-located macroblock in the reference frame or at least one of the upper or the left macroblock of the current macroblock in the current frame is in skip mode, the current macroblock passes through the first layer.…”

Section: Fast Skip/direct Mode Decision Techniquesmentioning

confidence: 99%

“…For RD performance very close to the reference encoder, (Jeon, 2003) achieves 35-58% reduction in run times and 33-55% reduction in CPU cycles for both rate-controlled and non-rate-controlled encoding. Compared to (Jeon, 2003), gains of 9-23% in run times and 7-22% in CPU cycles are reported from the scheme of (Grecos 2005). In order to increase the time savings, C. Grecos and M. Y. Yang proposed another algorithm in (Grecos, 2006) which could be considered as an extension of (Jeon, 2003).…”

Section: Fast Inter Mode Decision Techniquesmentioning

confidence: 99%

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Fast Mode Decision in H.264/AVC

Lambert

Mys

Škorupa

et al. 2010

Handheld Computing for Mobile Commerce

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The latest video coding standard (Wiegand, 2003), H.264/AVC, uses variable block sizes ranging from 16x16 to 4x4 to perform motion estimation in inter-frame coding and a rich set of prediction patterns for intra-frame coding. Then a robust RDO (Rate Distortion Optimization) technique is employed to select the best coding mode and reference frame for each macroblock. As a result, H.264/AVC exhibits high coding efficiency compared to older video coding standards [2, 3] and shows significant future promise in the fields of video broadcasting and communication. However, high coding efficiency also carries high computational complexity. Fast mode decision is one of the key techniques to significantly reducing computational complexity for a similar RD (Rate Distortion) performance. This chapter provides an up-to-date critical survey of fast mode decision techniques for the H.264/AVC standard. The motivation for this chapter is twofold: Firstly to provide an up-to-data review of the existing techniques and secondly to offer some insights into the studies of fast mode decision techniques.

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Section: Fast Skip/direct Mode Decision Techniquesmentioning

confidence: 99%

Section: Fast Inter Mode Decision Techniquesmentioning

confidence: 99%

Fast Mode Decision in H.264/AVC

Lambert

Mys

Škorupa

et al. 2010

Handheld Computing for Mobile Commerce

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“…Long encoding processing time and huge power consumption make its difficulty for real-time and low power consumption applications such as video conference and mobile video communication. In order to reduce the computational complexity, several efforts [5,6,7,8] have been made to simplify the mode selection by either classifying the modes into several groups or conjecturing from the selected best modes of neighboring blocks. In this paper, we proposed a fast Inter MD scheme based on statistic and adaptive adjustment.…”

Section: Introductionmentioning

confidence: 99%

A novel fast inter mode decision algorithm based on statistic and adaptive adjustment for H.264/AVC

Zhan

Hou

Sotudeh

2007

2007 15th International Conference on Software, Telecommunications and Computer Networks

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Abstract:The advanced video coding (AVC) standard H.264 achieves better video compression performance compared with the previous standards, and one of major features is variable block sizes based mode decision (MD). However, the computational complexity is one key challenge for the high efficient compression. Taking into consideration the statistical characteristics and the adaptive adjustment, a fast Inter MD algorithm is proposed in this paper. The proposed MD algorithm is effective, and it is easy to implement. The simulation results show that the new algorithm reduces 20% processing time on average. Mostly, the losses of video are around 0.02dB, and the increase of bitrate can be limited less than 1%.

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“…Many kinds of fast inter mode decision schemes have been reported that use the following RD optimization [7]- [13] where J RD is a bitrate-distortion value as a cost function, SSD Mode is the sum of the squared differences for the given mode, λ denotes the Lagrangian multiplier, R(x) is a bit amount for coding x, header provides header information, and residual is the residual data of the given MB. Kim and others [7] proposed an algorithm using the property of an all-zero coefficients block that is produced by quantification and coefficient thresholding to effectively eliminate unnecessary inter modes.…”

Section: Introductionmentioning

confidence: 99%

“…After obtaining candidate block modes, a refinement search is performed to find the best mode in the original image space. To detect an early SKIP block, Crecos and Yang [13] also used the prediction and thresholding scheme. In [14], a transcoding algorithm for MPEG-2 video to H.264 video with a fast motion search has been proposed by Lu and others.…”

Section: Introductionmentioning

confidence: 99%

Enhanced Inter Mode Decision Based on Contextual Prediction for P-Slices in H.264/AVC Video Coding

Kim¹,

Song²

2006

ETRI J

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We propose a fast macroblock mode prediction and decision algorithm based on contextual information for Pslices in the H.264/AVC video standard, in which the mode prediction part is composed of intra and inter modes. There are nine 4×4 and four 16×16 modes in the intra mode prediction, and seven block types exist for the best coding gain based on rate-distortion optimization. This scheme gives rise to exhaustive computations (search) in the coding procedure. To overcome this problem, a fast inter mode prediction scheme is applied that uses contextual mode information for P-slices. We verify the performance of the proposed scheme through a comparative analysis of experimental results. The suggested mode search procedure increased more than 57% in speed compared to a full mode search and more than 20% compared to the other methods.

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Fast Inter Mode Prediction for P Slices in the H264 Video Coding Standard

Cited by 86 publications

References 4 publications

Fast Mode Decision in H.264/AVC

Fast Mode Decision in H.264/AVC

A novel fast inter mode decision algorithm based on statistic and adaptive adjustment for H.264/AVC

Enhanced Inter Mode Decision Based on Contextual Prediction for P-Slices in H.264/AVC Video Coding

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