3D model construction and optimization based on vertical aerial photography

doi:10.13474/j.cnki.11-2246.2025.0313

Abstract

Abstract: Vertical aerial photography is generally used to obtain image data to make orthographic images, in order to further digging the value of image data and support the construction of China's national 3D mapping program, this paper studies the construction of three-dimensional model based on the image obtained by vertical aerial photography and explores the method of model effect optimization, specifically include the analysis of the feasibility of constructing a real 3D model based on vertical aerial images, the study of the method of enhancing the effect of the three-dimensional model by increasing the image overlap without increasing the cost of aerial photography, and the proposed model optimization method for building top information constraints. Through theoretical analysis and practice, it is proved that: the overlap has a great influence on the integrity of the three-dimensional model based on vertical aerial images, using 80 % overlap degree of heading to obtain image data can greatly improve the modeling effect without increasing the workload of aerial photography; Building top information constraint modeling method is very effective to improve the integrity of the model,The modeling method of building top information constraint is very effective to improve the integrity of the model; Building top information constraint modeling method is very effective to improve the integrity of the model, it can greatly optimize the edge shape of the building under the premise of retaining the detailed information of the top of the building, and can play an important role in urban planning, law enforcement monitoring and other fields.

Key words: vertical photography, 3D model, overlap, constraint modelling

CLC Number:

P237

LIU Jincang, YUAN Lei, MA Defu, XIA Jinliang. 3D model construction and optimization based on vertical aerial photography[J]. Bulletin of Surveying and Mapping, 2025, 0(3): 76-80.

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