3D model texture mapping method for power corridor considering tower power line occlusion

Abstract

The invention discloses a texture mapping method of a three-dimensional model of a power corridor considering power line occlusion of a pole tower. The method comprises the following steps: S1, detecting and removing power lines in a reconstruction model; S2, fitting the power line with the property of the vector panel element based on the vector overhanging power line; S3, performing occlusion detection on the reconstructed model based on a three-dimensional space ray collision detection algorithm; S4, optimizing a texture unit set based on a graph cut algorithm; S5, normalizing the image color based on the Wallis algorithm; S6, packaging the texture information based on the bookshelf post-order placement algorithm. The embodiment of the invention takes into account the power line occlusion problem of the pole tower, avoids the texture information of the power line being mapped to the surface of the reconstruction model, thereby improving the quality and accuracy of the reconstructionmodel, and provides a basis for further application based on the reconstruction model.

Description

technical field [0001] The invention relates to the technical field of large-scale three-dimensional scene reconstruction based on oblique digital photography, in particular to a texture mapping method for a three-dimensional model of a power corridor taking into account the shielding of power lines of towers. Background technique [0002] In recent years, the rapid development of UAV (Unmanned Aerial Vehicle, UAV) software and hardware platforms and the continuous expansion of application fields have made it a widely used new data collection method. Compared with traditional aerospace and aerial photogrammetry platforms, UAV has low economic cost, easy operation, and the ability to obtain high spatial resolution and high temporal resolution images, and has been widely used in agricultural management, smart cities, topographic mapping and other fields. more and more in-depth applications. Among them, the power line inspection based on oblique digital photography has develop...

AI Technical Summary

Problems solved by technology

[0003] However, there are some floating and discontinuous power line structures in the 3D model of the power corridor obtained by the current 3D reconstruction technology based on multi-view images. The texture information of the power line is incorrectly mapped to the ground, which affects the quality and accuracy of the texture model

And this wrong texture mapping is difficult to eliminate in the reconstructed texture model by manual editing

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