Bulletin of Surveying and Mapping ›› 2023, Vol. 0 ›› Issue (9): 93-99.doi: 10.13474/j.cnki.11-2246.2023.0271

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Estimation of building surface solar irradiance based on photogrammetry matching point cloud

DAI Zhisheng, WANG Pengfei, ZHOU Guangjian   

  1. Guangzhou Urban Planning & Design Survey Research Institute, Guangzhou 510030, China
  • Received:2023-03-29 Published:2023-10-08

Abstract: Aiming at the problems that the current solar irradiance evaluation methods of buildings are difficult to take into account both the roof and the facade of the building, and the laser point cloud data cost is high, which is not suitable for obtaining the point cloud of the building surface in a large range and high density. In this paper, an integrated evaluation method for building surface solar irradiance based on dense matching point clouds of slanted images is proposed. The main content of this method is to obtain the 3D building model of the area of interest by using the UAV oblique image, and to simulate the shadow and calculate the solar irradiance of the building surface by combining the shadow simulation algorithm and the simplified solar radiation model. The experimental results show that this method can accurately calculate the solar irradiance of the building surface, which not only expands the application range of tilt photogrammetry, but also provides reliable data support for assisting architects in designing the building surface and maximizing the use of solar energy on the building surface.

Key words: oblique photogrammetry, dense matching point cloud, building 3D model, solar energy, shadow simulation

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