This study proposed an algorithm for building model reconstruction from airborne laser scanning data, based on feature line detection and separation of planimetric and height computations.

该方法以投影为基础，以平高分解为手段，通过在多个投影平面内逐步确定平面、高程信息实现特征线提取及模型重建。

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This thesis mainly focuses the research on the following three aspects: edge detection, straight line detection and video text detection, which are belong to the low-level visual feature detection.

本论文主要从边缘检测、直线检测和文本区域检测三个方面对低层视觉特征检测技术进行研究。

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A pre-procession method to extract the vehicle feature was presented in this paper, which combined the detection line and virtual loops.

针对于传统的地埋线圈检测器检测技术，本文给出了一种基于视频图像的虚拟线圈检测方法，并在实际应用中取得很好的效果。

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