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为了提高地面建筑物测绘的准确性,改善建筑物测绘的可视化视觉效果,提出一种采用地面激光扫描技术的建筑物测绘模型。首先对地面建筑物进行三维激光扫描成像处理,对激光图像采用自适应小波降噪处理提高测绘图像的清晰度。然后运用仿射变换和Harris角点检测方法进行建筑物激光扫描图像的特征提取,输出可视化强和特征点标注明显的测绘图像,实现建筑物测绘模型优化设计。最后进行仿真分析,结果表明,采用该方法进行地面建筑物测绘,输出测绘图像的峰值信噪比较高,测绘误差较低,具有实用价值。
In order to improve the accuracy of ground building mapping and improve the visual visual effect of building mapping, a building mapping model using ground laser scanning technology is proposed. Firstly, 3D laser scanning imaging of ground buildings and adaptive wavelet denoising of laser images are used to improve the clarity of mapping images. Then the affine transformation and Harris corner detection method are used to extract the feature of the laser scanning image of the building. The output of the image is strong, and the obvious mapping images are marked with the feature points, so as to optimize the building mapping model. Finally, the simulation analysis results show that using this method for ground building mapping, the output of the mapping image of the peak signal to noise ratio is relatively high, mapping error is low, with practical value.