Oblique photograph three-dimensional modeling method based on space feature information

A technology of oblique photography and 3D modeling, which is applied in the field of construction and management, and urban planning, can solve the problems of large texture distortion and low precision of 3D modeling data, and achieve the effect of fast acquisition, low data precision and high quality

Inactive Publication Date: 2016-12-14
武汉广图科技有限公司
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Problems solved by technology

It effectively solves the problems of low accuracy of 3D model

Method used

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[0053]The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention. Apparently, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative work, any modifications, equivalent replacements, improvements, etc., shall be included in the protection scope of the present invention Inside.

[0054] The oblique photographic three-dimensional modeling method based on spatial feature information of the present invention, the steps of the method are:

[0055] S1, first perform aerial triangulation calculation to generate the outer orientation elements of the aerial photo;

[0056] S2. The camera is automatically calibrated to generate a three-dimensional dense point cloud;

[0057] S3. Based on...

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Abstract

The invention discloses an oblique photograph three-dimensional modeling method based on space feature information, and the method comprises the steps: S1, carrying out the aerial triangulation, and generating the elements of exterior orientation of an aerial photo; S2, carrying out the automatic calibration of a camera, and generating a three-dimensional dense point cloud; S3, extracting a feature line based on the three-dimensional dense point cloud; S4, carrying out the three-dimensional space TIN network construction based on a feature constraint line, and carrying out the model simplifying based on a normal vector; S5, carrying out the image splicing and edge fusion, generating model texture, and carrying out the compression, storage and output. The method provided by the invention can obtain a high-quality and high-precision fully 3D live model quickly. The method effectively solves problems that a conventional oblique photogrammetry model is low in precision of three-dimensional modeling data, and is large in texture distortion.

Description

technical field [0001] The invention relates to the technical field of urban planning, construction and management, in particular to a three-dimensional modeling method of oblique photography based on spatial feature information. Background technique [0002] At present, with the proposal and construction of digital earth, digital province and city, and digital community, and the rapid development of information and remote sensing data acquisition technology, the digital virtual system with three-dimensional modeling as the main content has attracted great attention. Generally speaking, 3D modeling is to construct a model with 3D data through 3D production software through a virtual 3D space. 3D modeling is the need of current 3D digital city modeling, urban planning, construction and management, public safety and emergency counter-terrorism. [0003] At present, the known 3D modeling methods mainly include oblique geolocation and measurement system, aviation airborne lidar...

Claims

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Application Information

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IPC IPC(8): G06T17/05
CPCG06T17/05
Inventor 韦喆叶家发
Owner 武汉广图科技有限公司
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