Journal Article10.1049/IET-IPR.2009.0097
Efficient intra-mode decision algorithm for inter-frames in H.264/AVC video coding
Jongho Kim,Byung-Gyu Kim +1 more
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TL;DR: In this article, an adaptive thresholding algorithm based on distribution characteristics of the sum of the absolute differences (SAD) of the best inter-mode when the intra-mode is the final coding mode is proposed.
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Abstract: An efficient intra-mode search algorithm is proposed to reduce the computational complexity of inter-frames for the H.264/AVC video encoding system. Each intra-mode search procedure usually causes a high degree of complexity in an inter-frame because of the inter-frame prediction modes that operate with the inter-mode decision procedure. To decrease this computational burden, the authors propose an adaptive thresholding algorithm based on distribution characteristics of the sum of the absolute differences (SAD) of the best inter-mode when the intra-mode is the final coding mode. The authors also include a simple refinement process by using the spatial correlation between neighbouring macro-blocks (MBs) and the current MB. The performance of the proposed algorithm is verified through comparative analysis of encoding time, loss of quality and the bit increment.
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Citations
A Fast Intra-Prediction Method in HEVC Using Rate-Distortion Estimation Based on Hadamard Transform
TL;DR: Among the many predefined modes, the intra‐prediction mode is chosen using the difference between the minimum and second minimum of the rate‐distortion cost estimation based on the Hadamard transform, which achieves a nearly similar coding performance to that of HEVC test model 2.1.
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Efficient Inter Prediction Mode Decision Method for Fast Motion Estimation in High Efficiency Video Coding
TL;DR: The proposed EIPM method computes the priority of all inter prediction modes and performs ME only on a selected inter prediction mode, which reduces computational complexity arising from ME by up to 51.76% and achieves near similar coding performance compared to HEVC test model version 10.1.
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Patent
Encoder-side decisions for screen content encoding
Bin Li,Jizheng Xu,Feng Wu +2 more
- 17 Mar 2014
TL;DR: In this article, the authors propose several encoder-side decisions for coding of screen content video or other video that can speed up encoding in various ways, such as identifying appropriate starting points for the motion estimation in different reference pictures.
19
Patent
Video encoder for images
Xiulian Peng,Fei Liang,Xu Jizheng,Feng Wu +3 more
- 27 May 2013
TL;DR: In this article, the digital image can be divided into a plurality of coding units and a determination can be made whether to divide each coding unit of the plurality of encoding units into smaller coding units/prediction units based on a range of pixel values in each encoding unit and/or a number of bits to encode the coding unit.
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A fast intra prediction method using Hadamard transform in high efficiency video coding
TL;DR: The experimental results show that the proposed method reduces the computational complexity of intra prediction in HEVC and achieves similar coding performance to that of HEVC test mode 2.1.
12
References
Adaptive rood pattern search for fast block-matching motion estimation
Yao Nie,Kai-Kuang Ma +1 more
TL;DR: The search speed of the proposed ARPS-ZMP is about two to three times faster than that of the diamond search (DS), and the method even achieves higher peak signal-to-noise ratio (PSNR) particularly for those video sequences containing large and/or complex motion contents.
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Fast Coding Mode Selection With Rate-Distortion Optimization for MPEG-4 Part-10 AVC/H.264
TL;DR: Two methods are proposed: early SKIP mode decision and selective intra mode decision that are verified to significantly reduce the entire encoding time by about 60% with only negligible coding loss.
194
Fast inter mode prediction for P slices in the H264 video coding standard
Christos Grecos,Ming Yuan Yang +1 more
TL;DR: This work proposes an inter mode decision scheme for P slices in the H264 video coding standard that initially exploits neighborhood information jointly with a set of skip mode conditions for enhanced skip mode decision and subsequently performsInter mode decision for the remaining macroblocks by using a gentle set of smoothness constraints.
101
Fast approach for H.264 inter mode decision
X. Jing,Lap-Pui Chau +1 more
TL;DR: Experimental results show that the proposed method can efficiently save the computation cost for inter mode decision while maintaining the same PSNR and bit rate.
100
Fast three step intra prediction algorithm for 4/spl times/4 blocks in H.264
Chao-Chung Cheng,Tian-Sheuan Chang +1 more
- 23 May 2005
TL;DR: In each step of the algorithm, the proposed algorithm efficiently explores the neighborhood direction around the minimum one and thus skips other unlikely ones and can complete 4/spl times/4 intra prediction by only examining 6 modes instead of 9 modes in the full search algorithm.
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