Texture Mapping Method of Laser Point Cloud and Digital Image Based on Projection Transformation

Abstract:

In view of the lack of high-precision and high-resolution texture information of three-dimensional laser point cloud, this paper proposes a fusion method of three-dimensional laser point cloud and high-resolution digital images. Firstly the point cloud is transformed to the spherical image of laser intensity by projection. Then the rigorous projection transformation relation between the external digital image and three-dimensional point cloud is constructed easily through spherical image and feature information. Finally the color information of the point cloud is given by digital images. The experiment indicates that the novel method is able to avoid the layout difficulty of control points in the field and operating the three-dimensional data of indoor work, and meanwhile achieve the control of geometric accuracy.

• Periodical: Advanced Materials Research (Volumes 864-867)
• Pages: 2792-2798
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.864-867.2792
• Online since: December 2013
• Authors: Yun Cai*, Hao Li, Ming Fei Wu, Biao Yang
• Keywords: Laser Intensity Image, Laser Point Cloud, Ordinary Digital Image, Point Cloud Coloring, Projection Transformation

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