This creates a plane which we can add the image above as reference.

这会创建一个平面，来添加我们刚才保存的图像。

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A processor module maps the reference plane into a 3d ultrasound data set and automatically calculates image planes based on the reference plane for a current view position and a prior view position.

处理器模块将参考平面映射到3d超声数据集中，并且根据当前视图位置和先前视图位置的参考平面来自动计算图像平面。

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Analyzing the relationship between the feature of reference-image correlation plane and matching capability, a synthetic rule is established to evaluate different feature.

通过对基准图相关曲面特征与匹配性能参数之间的关系分析，建立了一种综合的评价准则，对不同的特征进行综合的评价。

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