In order to gain the optimal mode, H. 264 adopts Rate Distortion Optimization (RDO) technique to compute the cost of every mode for each macroblock, but it increases computational complexity.
为了得到最优模式，H . 264采用了率失真优化(rdo)技术计算宏块的每种模式的代价，但是这样增加了计算复杂度。
The technology could reduce the complexity of scene properly and the distortion is also lessened.
通过该技术可以简化场景的复杂度，并对图形的真实感程度损失比较小。
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