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为解决多视点视频编码(MVC)计算复杂度过高的问题,提出一种多视点视频编码快速预测算法。计算当前宏块Direct模式的率失真代价并将其与自适应阈值进行比较,以提供有效的提前终止策略。当率失真代价小于自适应阈值时,Direct模式被选作最优模式,模式选择过程提前终止。当率失真代价大于自适应阈值时,利用运动复杂度将当前宏块分成不同的运动类型,每种类型的宏块仅检查指定的模式,从而使得不必要的模式检查过程提前结束。实验结果表明,该算法在保持几乎不变的编码效率基础上,大幅减少了MVC的计算量。
To solve the problem of high computational complexity of multi-view video coding (MVC), a fast multi-view video coding prediction algorithm is proposed. Calculate the rate-distortion penalty of the current macroblock Direct mode and compare it to the adaptive threshold to provide an effective early termination strategy. When the rate-distortion cost is less than the adaptive threshold, the Direct mode is selected as the optimal mode and the mode selection process is terminated prematurely. When the rate-distortion cost is greater than the adaptive threshold, the current macroblock is partitioned into motion types according to the motion complexity. Each type of macroblock checks only the specified mode, so that the unnecessary mode checking process ends prematurely. The experimental results show that the proposed algorithm can reduce the computational complexity of MVC greatly while maintaining the almost unchanged coding efficiency.