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Method for three-dimensional reconstruction of monocular polarization

A three-dimensional reconstruction and polarization technology, applied in the field of optical imaging, can solve the problems of complex system structure, long operation time, and low accuracy, and achieve the effect of expanding the application range, increasing the operation speed, and reducing the number

Active Publication Date: 2019-01-04
XIDIAN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, the calculation time of this method is relatively long and the accuracy is low when processing large-sized images.
In addition, since this method requires two imaging sensors, the system structure will be more complicated and the cost will be higher

Method used

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  • Method for three-dimensional reconstruction of monocular polarization
  • Method for three-dimensional reconstruction of monocular polarization
  • Method for three-dimensional reconstruction of monocular polarization

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Embodiment 1

[0051] See figure 2 , figure 2 It is a schematic flowchart of a monocular polarization three-dimensional reconstruction method provided by an embodiment of the present invention.

[0052] A monocular polarization three-dimensional reconstruction method, comprising the following steps:

[0053] (a) Obtain the light intensity image of the object and the polarization images of several objects with different polarization angles;

[0054] (b) obtaining the first object surface normal according to the object polarization image;

[0055] (c) using the SFS algorithm to obtain the surface normal of the second object according to the light intensity image of the object;

[0056] (d) using the second object surface normal to correct the first object surface normal to obtain the third object surface normal;

[0057](e) Realizing the three-dimensional reconstruction according to the surface normal of the third object.

[0058] In the embodiment of the present invention, the surface ...

Embodiment 2

[0060] see again figure 2 In this embodiment, on the basis of the above embodiments, the specific process of a monocular polarization three-dimensional reconstruction method will be described in detail.

[0061] (S10) Acquire the light intensity image of the object and several polarization images of the object with different polarization angles.

[0062] Step (S10) comprises the following steps:

[0063] (S101) Obtain the light intensity image of the object and several scene polarization images of different polarization angles.

[0064] Utilize the imaging detector and the polarizer to obtain the first polarized image I of the object 0 , the second polarized image I 45 , the third polarization image I 90 , the fourth polarization image I 135 .

[0065] In an environment of natural light, utilize the imaging detector CMOS (complementary metal oxide semiconductor) camera to collect the reflected light on the surface of the object, thereby obtaining the light intensity ima...

Embodiment 3

[0196] See Figure 6 , Figure 6 It is a schematic flowchart of another monocular polarization three-dimensional reconstruction method provided by the embodiment of the present invention. On the basis of the above-mentioned embodiments, this embodiment focuses on a detailed description of the specific process of a monocular polarization three-dimensional reconstruction method.

[0197] (S100) Obtain polarization images of objects at different angles through a camera.

[0198] (S200) Utilize the Stokes vector to calculate the degree of polarization of the object surface, and at the same time, utilize the Stokes vector to calculate the azimuth of the incident light on the object surface; use the polarized image to obtain the second object surface normal by using the SFS algorithm.

[0199] (S300) Calculate and obtain an incident angle of incident light on the surface of the object according to the degree of polarization.

[0200] (S400) Calculate and obtain the surface normal...

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Abstract

The invention relates to a monocular polarization three-dimensional reconstruction method, comprising the following steps: (a) obtaining light intensity images of an object and polarization images ofseveral objects with different polarization angles; (b) obtaining a first object surface normal according to that object polarization image; (c) obtaining a second object surface normal line accordingto that light intensity image of the object by use an SFS algorithm; (d) correct that first object surface normal using the second object surface normal to obtain a third object surface normal; (e) realizing that three-dimensional reconstruction according to the surface normal of the third object. The surface normal of the object obtained by the SFS method is used for correcting the surface normal obtained by the polarization information, thereby realizing the monocular three-dimensional reconstruction, reducing the complexity of the system structure and improving the operation speed.

Description

technical field [0001] The invention belongs to the field of optical imaging, and in particular relates to a monocular polarization three-dimensional reconstruction method. Background technique [0002] Three-dimensional reconstruction refers to the technology of constructing a reasonable three-dimensional free-form surface from the sampling data set reflecting the three-dimensional properties of the object, and building a model for the existing surface. Through 3D reconstruction technology, we can obtain complete 3D information including structure, texture, scale and other objects. With the wide application of 3D reconstruction technology in computer vision, virtual display, medical visualization and other fields, people have higher and higher requirements for the richness of detailed information and the simplicity of system structure in the reconstruction results of 3D reconstruction technology. However, the current 3D Reconstruction methods often satisfy both needs. Cur...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T17/00
CPCG06T17/00
Inventor 刘飞邵晓鹏李鑫黄盛志李轩韩平丽
Owner XIDIAN UNIV
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