An automatic repairing technology of 3D model for blind area in oblique photography based on close range image

doi:10.6046/gtzyyg.2020172

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Abstract

In close range oblique photography, there are problems of structural adhesion and distortion of 3D model caused by dead angle of aerial photography. In this study, based on a large number of close range images, the technology uses image processing techniques such as feature line matching, point cloud matching, texture mapping to fill in the blind area generated by oblique photography, so as to further optimize the structure and texture of the corresponding near earth model, realize the fine reconstruction, and solve the problem that it is difficult for the oblique photography model to browse near the ground. Comparative experiments show that the proposed method can improve the effect of close range correction to a certain extent and improve the visualization effect of oblique photography digital 3D imaging, thus providing reference for obtaining high-quality and high-precision 3D real scene model.

Keywords oblique photography 3D model close range image blind area repairing

ZTFLH:

P208

Corresponding Authors: ZENG Zhi E-mail: wangya@zjccs.gov.cn;zengzhi@hzu.edu.cn

Issue Date: 18 March 2021

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	Ya WANG
	Zhi ZENG

Cite this article:

Ya WANG,Zhi ZENG. An automatic repairing technology of 3D model for blind area in oblique photography based on close range image[J]. Remote Sensing for Land & Resources, 2021, 33(1): 72-77.

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https://www.gtzyyg.com/EN/10.6046/gtzyyg.2020172 OR https://www.gtzyyg.com/EN/Y2021/V33/I1/72

Fig.1 Vertical view of oblique photography model

Fig.2 Oblique photography model of the venue of geographic information hall

Fig.3 Acquisition tracks and supplementary restoration of close range images

Fig.4 Registration process of close range image and 3D point cloud model

Fig.5 Triangulation network to find void effect

Fig.6 Feature line matching and restoration

Fig.7 3D model updating process

Fig.8 A restored oblique photography model

Fig.9 Aerial tilt model and close range correction effect

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