Three-dimension reconstruction method and device, and mobile terminal

A three-dimensional reconstruction and three-dimensional technology, applied in the field of three-dimensional information, can solve the problems of failure to achieve three-dimensional reconstruction of objects, high cost, and no access to color information of objects, and achieve the effect of fast and all-round three-dimensional scanning and reconstruction.

Inactive Publication Date: 2015-03-18
HUAWEI TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The main disadvantage of this device is that the cost is relatively high, and it can only measure one surface. Since the collected image information is

Method used

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  • Three-dimension reconstruction method and device, and mobile terminal
  • Three-dimension reconstruction method and device, and mobile terminal
  • Three-dimension reconstruction method and device, and mobile terminal

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Experimental program
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Embodiment 1

[0056] figure 1 It shows a flowchart of a three-dimensional reconstruction method provided by an embodiment of the present invention. Such as figure 1 As shown, the three-dimensional reconstruction method mainly includes:

[0057] Step S100, project a linear laser to the object;

[0058] Step S110: Continuously collect image information of the object irradiated by the linear laser from at least two angles, and continuously collect the motion information of the camera;

[0059] Step S120, according to the collected image information, obtain the three-dimensional coordinates of the object in the camera coordinate system corresponding to each collection time at each collection time;

[0060] Step S130: Obtain the positional relationship of the camera coordinate system relative to the global three-dimensional coordinate system at each collection time according to the collected motion information; and

[0061] Step S140: Perform three-dimensional reconstruction of the object according to ...

Embodiment 2

[0067] figure 2 It shows a flowchart of a three-dimensional reconstruction method provided by another embodiment of the present invention. figure 2 versus figure 1 Steps with the same label have the same meaning, such as figure 2 As shown, the main difference between this embodiment and the previous embodiment is that according to the collected image information, the object at each collection time is obtained before the three-dimensional coordinates in the camera coordinate system corresponding to each collection time. Methods also include:

[0068] Step S200: Calibrate the internal parameters and external parameters of the camera.

[0069] Correspondingly, obtaining the three-dimensional coordinates of the object in the camera coordinate system corresponding to each collection time at each collection time according to the collected image information may specifically include:

[0070] Step S210: Calculate the three-dimensional coordinates of the object in the camera coordinate sy...

Embodiment 3

[0112] image 3 It shows a flowchart of a three-dimensional reconstruction method provided by another embodiment of the present invention. image 3 versus figure 1 , figure 2 Steps with the same label have the same meaning, such as image 3 As shown, the main difference between this embodiment and the previous embodiment is that after the three-dimensional reconstruction of the object according to the three-dimensional coordinates and the position relationship, the method further includes:

[0113] Step S240: Calculate the relative relationship between the coordinate systems of the cameras at different collection moments, and establish the mapping relationship between the image information of the object at different collection moments according to the relative relationship.

[0114] Specifically, such as Figure 4 As shown, according to the above step S220, a continuous camera coordinate system sequence can be obtained, that is, the relative position relationship of the camera coor...

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Abstract

Disclosed are a three-dimensional reconstruction method and device, and a mobile terminal. The three-dimensional reconstruction method comprises: projecting linear laser to an object; continuously collecting image information about the object irradiated by the linear laser from at least two angles, and continuously collecting motion information about a camera; according to the image information, obtaining the three-dimensional coordinates of the object under a camera coordinate system corresponding to each collection time at each collection time; and according to the motion information, obtaining a position relationship of the camera coordinate system relative to a global three-dimensional coordinate system at each collection time, and conducting three-dimensional reconstruction of the object according to the three-dimensional coordinates and the position relationship. By means of the three-dimensional reconstruction method and device, and the mobile terminal in the embodiments of the present invention, image information about an object can be continuously collected from different angles and motion information about a camera can be continuously collected, and quick and omnidirectional three-dimensional scanning and reconstruction can be conducted on the object according to the collected information.

Description

Technical field [0001] The present invention relates to the field of three-dimensional information technology, in particular to a three-dimensional reconstruction method and device, and a mobile terminal. Background technique [0002] Three-dimensional scanning and reconstruction is a high-tech integration of optical, mechanical, electrical and computer technology. It is mainly used to scan the external structure and color of an object to obtain the spatial coordinates of the object. Its important significance lies in the ability to convert the three-dimensional information of an object into a digital signal that can be directly processed by a computer, which provides a very convenient and quick means for the digitization of the physical object. Three-dimensional scanning and reconstruction technology has a wide range of applications in many fields, such as reverse engineering calculations in industry, surface shape detection in medical treatment, and product quality control in p...

Claims

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Application Information

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IPC IPC(8): G06T7/00G01B11/24
CPCG06T7/0051G06T7/579
Inventor 刘兆祥廉士国
Owner HUAWEI TECH CO LTD
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