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According to the given source and mathematic model of matching error, a algorithm for real time matching of GPS positioning results and digital maps is put forward.
通过误差来源的分析和误差模型的建立，提出了一种车辆导航中gps定位测量与数字地图实时配准的地图匹配算法。
This method not only USES the feature of wavelets fast matching, but also overcomes the matching error from decimating and takes good use of the structure unit information.
该方法不但利用了小波的快速匹配的特点，而且克服了由于抽取引起信息丢失而造成的匹配的错误，充分利用模板结构信息。
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。
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