Mapping Method of 2D Projection Image to 3D Model

A 3D model and 2D projection technology, applied in image data processing, 3D modeling, instruments, etc., can solve the problem of lack of connection between 2D projection and 3D model, and achieve the effect of solving the problem of graphics scaling and 3D model scaling.

Active Publication Date: 2019-08-02
NORTHWEST UNIV
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  • Claims
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Problems solved by technology

[0006] The purpose of the present invention is to provide a mapping method from a two-dimensional projection image to a three-dimensional model, which solves the problem of lack of connection between the two-dimensional projection and the three-dimensional model in the prior art

Method used

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  • Mapping Method of 2D Projection Image to 3D Model
  • Mapping Method of 2D Projection Image to 3D Model
  • Mapping Method of 2D Projection Image to 3D Model

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Embodiment 1

[0046] This embodiment provides a mapping method from a two-dimensional projected image to a three-dimensional model, such as figure 1 shown, including the following steps:

[0047] Step 1, obtain a 3D model by a 3D scanner;

[0048] In this embodiment, a hand-held three-dimensional laser scanner Handyscan3D is used to scan objects to obtain three-dimensional model information;

[0049] Step 2, preprocessing the 3D model to obtain a preprocessed 3D model;

[0050] Denoise the acquired 3D model, as shown in Figure 2(a) and Figure 2(b).

[0051] Step 3, normalize the preprocessed 3D model to obtain the bounding box of the 3D model; image 3 shown.

[0052] Suppose the vertex set is V and the normal vector set is N

[0053] Step 31, obtain the centroid of the 3D model

[0054] The calculation of the centroid is through the statistics of the model vertex set, and the mean value of the vertices in the three directions is obtained as the centroid.

[0055] Step 32, realizatio...

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Abstract

The invention discloses a mapping method from a two-dimensional projected image to a three-dimensional model, comprising: step 1, obtaining a three-dimensional model through a three-dimensional scanner; step 2, performing preprocessing on the three-dimensional model to obtain a preprocessed three-dimensional model; step 3, obtaining the three-dimensional model The three-dimensional model after the pretreatment carries out normalization processing, obtains the bounding box of the three-dimensional model; Step 4, establishes the three-dimensional model OBB bounding box; Step 5, establishes the connection between the two-dimensional projection image and the three-dimensional model; The present invention overcomes the existing There is a shortcoming that the 3D model and its projection image are relatively independent in the technology, and the connection between the two is effectively established; and the problem of simultaneous scaling of the 3D model and the 2D projection image is overcome, and the graphics scaling is solved. and the scaling of 3D models.

Description

technical field [0001] The invention belongs to the technical field related to three-dimensional models, and relates to a mapping method of two-dimensional images corresponding to three-dimensional models. The invention can directly map the operation on the two-dimensional image to the corresponding three-dimensional model itself. Background technique [0002] The 3D geometric model reproduces the shape information of objects in the real world from a geometric point of view. With the advancement of 3D model modeling, digitization, and visualization technology, the research on 3D geometric models has received more and more attention. Driven by unprecedented attention. Digital geometric information is considered as the fourth type of digital media after digital audio, image and video. With the development of digital production and consumption, more and more digital geometric information is generated, which urgently needs to be processed, analyzed and identified in order to ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T17/30
CPCG06T17/30
Inventor 耿国华周光鲁李康周明全王小凤
Owner NORTHWEST UNIV
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