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Method for mapping two-dimensional projected image to three-dimensional 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: 2017-09-08
NORTHWEST UNIV(CN)
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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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  • Method for mapping two-dimensional projected image to three-dimensional model
  • Method for mapping two-dimensional projected image to three-dimensional model
  • Method for mapping two-dimensional projected image to three-dimensional model

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Embodiment 1

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

[0047] Step 1. Obtain a 3D model through a 3D scanner;

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

[0049] Step 2: Preprocess the 3D model to obtain the preprocessed 3D model;

[0050] Denoise the acquired three-dimensional 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] Assume that the vertex set is V and the normal vector set is N

[0053] Step 31: Obtain the centroid of the 3D model

[0054] The centroid is calculated 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, realization of...

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Abstract

The invention discloses a method for mapping a two-dimensional (2D) projected image to a three-dimensional (3D) model. The mapping method comprises the following steps: step one, acquiring the 3D model through a 3D scanner; step two, preprocessing the 3D model to obtain the preprocessed 3D model; step three, normalizing the preprocessed 3D model to obtain a bounding box of the 3D model; step four, establishing a 3D model OBB bounding box; and step five, establishing the contact between the 2D projected image and the 3D model. Through the mapping method disclosed by the invention, the defect that the 3D model and the projected image thereof are relatively independent in the prior art is overcome, the contact between the 3D model and the projected image is effectively established; the problem that the 3D model and the 2D projected image simultaneously have the scalability is overcome, and the problems of pattern scaling and the 3D model scaling are solved.

Description

Technical field [0001] The invention belongs to the technical field related to three-dimensional models, and relates to a mapping method of a two-dimensional image corresponding to a three-dimensional model. The present invention can directly map the operation on the two-dimensional image to the corresponding three-dimensional model itself. Background technique [0002] The three-dimensional geometric model reproduces the shape information of objects in the real world from a geometric perspective. With the advancement of 3D model modeling, digitization, and visualization technology, the research of 3D geometric models has received more and more attention, and the application needs of industrial product design, film and television entertainment, e-commerce, cultural relics protection, urban planning, etc. Driven by, it has received unprecedented attention. Digital geometric information is considered to be the fourth type of digital media after digital audio, image and video. Wi...

Claims

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Application Information

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Patent Type & Authority Applications(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(CN)
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