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Physical three-dimensional model automatic modeling method

A 3D model and automatic modeling technology, applied in the field of virtual reality, can solve problems such as complex and cumbersome manual interactive operations

Active Publication Date: 2015-09-16
BEIHANG UNIV
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0009] The purpose of the present invention is to solve the problem of complex and cumbersome manual interactive operation in the 3D modeling process and the problem of relying on expensive sensors, and proposes an automatic modeling method for a solid 3D model

Method used

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  • Physical three-dimensional model automatic modeling method

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Embodiment

[0201] Take three types of typical objects as examples, including: 1. A cuboid carton with no occlusion on the surface and a large change in shape from different viewing angles; 2. A cylindrical water cup with no occlusion on the surface and little change in shape from each viewing angle; Potted pepper grass for shade. Such as Figure 18 Shown are the images, point clouds, reconstructed 3D models, simplified mesh models, and texture mapping of these objects in OGRE. From the perspective of reconstruction effect, various types of objects can be established with good and complete 3D models, including potted plants with shelter, and the final display effect is relatively close to the real thing.

[0202] According to the requirements of different levels of precision in the simulation scene, the 3D model of the object is simplified to different degrees. Such as Figure 19(a) and 19(b) As shown, it shows models of different levels from fine to rough, the number of points and th...

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Abstract

The present invention discloses a physical three-dimensional model automatic modeling method which comprises the following steps of (1) collecting a turntable point cloud and a modeling object point cloud, and carrying out real-time registration to obtain a mixed point cloud of an object and a turntable, (2) carrying out point cloud pretreatment to obtain the surface point cloud of a model object with a bottom surface point, (3) carrying out surface reconstruction to obtain the three-dimensional surface model of the object, (4) carrying out model simplification treatment on the three-dimensional surface model, and establishing the three-dimensional simplified surface model of the object, (5) carrying out texture mapping on the three-dimensional simplified surface model, and (6) carrying out model rendering on the three-dimensional model which is subjected to texture mapping to generate a two-dimensional image. The method has the advantages that the system operation is stable and reliable, the automation is realized in the operation process, a rebuilding effect is good, and the application needs of different simulation scenes can be satisfied by a built multi-granularity three-dimensional model.

Description

technical field [0001] The invention relates to point cloud processing technology, three-dimensional modeling technology and texture generation technology, and belongs to the field of virtual reality, in particular to an automatic modeling method for a solid three-dimensional model. Background technique [0002] Image modeling and rendering technology, referred to as IBMR (Image-Based Modeling and Rendering), uses two-dimensional images of objects to generate three-dimensional models. The geometric feature information and rendering feature information of objects do not require user input, and are directly collected from the camera. obtained from the image. [0003] IBMR technology is divided into two ways: active method and passive method. In the process of image acquisition, the active method uses a light source to emit light into the scene, such as infrared or visible light, and actively obtains the feedback of the scene, thereby building a 3D model of the scene; the pass...

Claims

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Application Information

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IPC IPC(8): G06T17/00
Inventor 肖路昊龚光红
Owner BEIHANG UNIV
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