因为点前方所处的方位及工作环境对比恶劣，呈现老化和破损的概率较高。
Because of the location of the point in front of the working environment and poor contrast, showing a higher probability of aging and breakage.
对比增强和多方位多序列成像可以提供更多定位定性的诊断依据。
Contrast enhancement, multiple positions and multiple sequences would provide more evidences for the diagnosis.
通过与现有基于点云强度图的配准方法的对比实验表明，在低精度初始外方位元素的辅助下，本文方法能够达到较高的配准精度。
The experimental results show that the proposed algorithm can obtain more accurate results in comparison with the registration method based on LiDAR intensity image.
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