Whether the prediction has a small enough error margin to be useful is another matter entirely.
而所做预测的误差容限是否足够小，从而使得这个预测还算有用，这完全是另外一码事。
When the matching error based on the prediction of the motion vector is between two SAD thresholds, a search restricted in a small window is used to replace the original motion estimation.
当基于预测运动矢量的匹配误差介于两sad阈值之间时，用小窗口搜索代替运动估计。
The error of the model is small and its performance is stable. The problem that error increases with the lapse of time existed in common fitting prediction has been overcome.
该模型误差小且稳定，克服了一般拟合预测中误差随时间推移增大的缺点。
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