A new fast inter mode decision algorithm in H.264/AVC video coding

8th International Conference on Electrical and Computer Engineering Pub Date : 2014-12-01 DOI:10.1109/ICECE.2014.7027016

Md Salah Uddin Yusuf, Md. Imtiaz Hossain, Mohiudding Ahmad

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引用次数: 1

Abstract

In this paper, a new probability based fast inter mode decision algorithm is proposed for H.264/AVC video standard. The main idea is to classify the inter modes into large and small modes category and determine which one is suitable for a macroblock (MB). Depending on this, the probability of each large mode corresponding to the initial Hadamard SAD16×16 cost or the probability of each small mode corresponding to the initial Hadamard SADs8×8 cost is determined. Then the best mode can be obtained from their probability characteristics. Thus, it is possible to determine the best inter mode only by calculating the Hadamard Transform (H-SAD) cost instead of rate distortion cost. Moreover, it avails the platform to determine the best mode without comparing the cost of each mode to other modes. As a result, this approach can avoid most of the complex computation processes like quantization, variable length coding, pixel reconstruction etc. The experimental results have shown that the proposed algorithm can reduce 60% to 65% of the total encoding time of H.264/ AVC with negligible distortion.

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H.264/AVC视频编码中一种新的快速模式间决策算法

针对H.264/AVC视频标准，提出了一种基于概率的快速模式间决策算法。主要思想是将交互模式分为大模式和小模式，并确定哪一种模式适合宏块(MB)。根据此，确定每个大模式对应于初始Hadamard SAD16×16成本的概率或每个小模式对应于初始Hadamard SADs8×8成本的概率。然后根据它们的概率特征得到最佳模式。因此，可以通过计算Hadamard变换(H-SAD)代价而不是速率失真代价来确定最佳间模式。此外，它使平台能够在不比较每种模式的成本的情况下确定最佳模式。因此，该方法可以避免大部分复杂的计算过程，如量化、变长编码、像素重建等。实验结果表明，该算法可以将H.264/ AVC的总编码时间减少60% ~ 65%，且失真可以忽略不计。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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8th International Conference on Electrical and Computer Engineering

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