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Vector building drawing based method for reconstructing three-dimensional model

A technology for architectural drawings and three-dimensional reconstruction, applied in the field of virtual reality, can solve the problems of long model generation cycle and low efficiency, and achieve the effect of simplifying the contour generation process, improving efficiency, and improving efficiency

Active Publication Date: 2010-03-17
INST OF COMPUTING TECH CHINESE ACAD OF SCI
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  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the defects of low efficiency and long model generation cycle of existing 3D model reconstruction methods, thereby providing a method for realizing 3D model reconstruction of buildings on existing vector architectural drawings

Method used

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  • Vector building drawing based method for reconstructing three-dimensional model
  • Vector building drawing based method for reconstructing three-dimensional model
  • Vector building drawing based method for reconstructing three-dimensional model

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Embodiment Construction

[0066] Since the method of the present invention relates to the field of construction, for the convenience of understanding, some technical terms in the field of construction involved in the present invention will be described first.

[0067] Primitives: graphic elements stored in CAD vector drawings, such as polylines, polygons, blocks, etc.

[0068] Basic primitives: The basic primitives in this article only refer to line segments, arcs and text.

[0069] Combined primitives: grouped graphic elements stored in CAD vector drawings, such as blocks, annotations, etc.

[0070] Axis symbol: the axis symbol used for alignment in drawings, in figure 1 An example of the axis symbol is given in , where d represents the direction of the axis symbol, c represents the position of the axis symbol, and "A" represents the label of the axis symbol.

[0071] Building components: are the basic objects that make up the building structure, such as walls, columns, doors, etc.

[0072] Accordi...

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Abstract

The invention provides a vector building drawing based method for reconstructing a three-dimensional model. The method comprises the following steps: performing preprocessing including primitive conversion, drawing alignment and height adjustment on a related vector building drawing for rebuilding the three-dimensional model to acquire corresponding primitive data; reading the primitive data in the processed vector building drawing, and identifying a building structural member to be shown in the vector building drawing according to the primitive data so as to acquire a profile of the buildingstructural member; completing three-dimensional rebuilding of the building structural member according to the identified profile after profile identification is completed for the building structural member in the vector building drawing so as to complete three-dimensional rebuilding of a building shown by the vector building drawing. The method realizes identification and extraction of related information in the drawing by processing the vector building drawing, completes the three-dimensional rebuilding of the building shown in the vector building drawing based on the information, and has greater improvement in efficiency by comparing with the prior artificial rebuilding method.

Description

technical field [0001] The invention relates to the field of virtual reality, in particular to a method for interactively reconstructing a three-dimensional model of a building based on a vector architectural drawing. Background technique [0002] In the field of virtual reality, the 3D model of buildings is widely used as an important scene model, such as game scenes, real estate display, safety preview, architectural design evaluation and other fields, all of which have urgent requirements for building models. Faced with this demand, the common solution nowadays is to model manually by artists, which not only consumes a lot of manpower and financial resources, but also is not efficient and the model generation cycle is long. Therefore, the technology of quickly and accurately obtaining the required building model from existing data sources has a wide application prospect. [0003] In real life, the accurate and widespread data sources for describing the internal results o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T17/00
Inventor 李挺束博邱显杰王兆其
Owner INST OF COMPUTING TECH CHINESE ACAD OF SCI
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