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Three-dimensional architecture rapid modelling approach based on stereopair

A technology of stereo image pairs and modeling methods, applied in 3D modeling, image data processing, instruments, etc., can solve problems such as large modeling errors and complex algorithms, and achieve simple algorithms, both speed and fidelity, and high information inclusive effect

Inactive Publication Date: 2008-10-15
NORTHWESTERN POLYTECHNICAL UNIV
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Problems solved by technology

The disadvantage is that the algorithm is complex and the modeling error is large

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  • Three-dimensional architecture rapid modelling approach based on stereopair
  • Three-dimensional architecture rapid modelling approach based on stereopair
  • Three-dimensional architecture rapid modelling approach based on stereopair

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Embodiment Construction

[0014] The present invention will now be further described in conjunction with the drawings:

[0015] The hardware environment used for implementation is: Pentium-43G computer, 1GB memory, 128M graphics card, and the running software environment is: VC++6.0 and Windows XP. We use the VC++ programming language to implement the method proposed by the present invention. The image data adopts aerial stereo image pair (Xi'an city map).

[0016] The basic idea of ​​the present invention is that in order to complete the three-dimensional modeling of the building, the required high-precision three-dimensional information can be obtained through the method of image processing and digital photogrammetry for aerial stereo images. Assuming that the walls of the building are vertical, the reconstruction of the building can be completed by extracting the corner points of the long boundary of the image. These corner points are connected in a certain order to form a closed area, which can be appr...

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Abstract

The invention relates to a modeling method of a three-dimensional building based on stereo image pairs, which is characterized in that: corner points of the building are sequentially extracted from a left aviation image and a right aviation image according to the clockwise or counterclockwise direction; then the positions of the extracted corner points of the building are corrected according to the similar point-position pairs; the images are then carried out the automatic orientation, the calculation of a three-dimensional coordinate is carried out according to the result of the automatic orientation, and the calculation result finally utilizes an OPENGL tool to realize the three-dimensional display and multi-angle observation on a screen. The modeling method has two obvious advantages that: firstly, the algorithm is simple and effective, which is one of the effective ways for realizing the modeling of the three-dimensional building. Secondly, the modeling method can take account of both speed and fidelity. The extracted corner points are corrected, thus effectively reducing the position error of the corner points and taking account of both speed and fidelity.

Description

[0001] Technical Field: The present invention relates to a three-dimensional building rapid modeling method based on stereo image pairs. It is suitable for 3D modeling of typical targets (such as buildings) in aerial images, and the imaging source is visible light. Background technique: [0002] With the development of information technology, there is an increasing demand for 3D building modeling and urban virtual reality. The realization of 3D virtual buildings will have an unprecedented impact on the prospects of many fields such as computer science and geoinformation science, such as 3D virtual city, robot intelligent navigation, missile guidance, vehicle assisted driving, architectural simulation display, flight simulation, interactive Games, medical simulations, virtual shopping, virtual museums and virtual art galleries, etc. [0003] At present, there are roughly three solutions for 3D modeling, but there are still many problems. Method 1: Directly use three-dimensional prod...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T17/40G06T17/00G06T19/00
Inventor 郭雷赵天云程兆广
Owner NORTHWESTERN POLYTECHNICAL UNIV
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