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Three-dimensional scanning device and three-dimensional scanning method

A three-dimensional scanning and to-be-scanned technology, applied in the field of three-dimensional information, can solve the problems of slow measurement speed, high measurement cost, and easy wear of the probe, and achieve the effect of easy operation, fast scanning speed and long scanning time.

Inactive Publication Date: 2012-10-03
NORTHWEST A & F UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantages are: high measurement cost, easy wear of the probe, and slow measurement speed; the non-contact 3D scanner will not damage the surface of the object due to its contact, and it is faster and easier to operate than the contact type. feature

Method used

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  • Three-dimensional scanning device and three-dimensional scanning method
  • Three-dimensional scanning device and three-dimensional scanning method
  • Three-dimensional scanning device and three-dimensional scanning method

Examples

Experimental program
Comparison scheme
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Embodiment 1

[0025] (1) Equipment: two cameras, one line laser pointer.

[0026] (2) Principle: if figure 1 As shown, the space coordinate system is established with the left camera as the origin of the space coordinate system. L is the distance between the two cameras, (x0, y0, z0) is the coordinates of a certain point of the space object, and the two rectangles in the figure are the two images captured by the cameras, (x1, y1, z1) and (x2, y2 , z2) respectively represent the coordinate points of the points of the actual object in space in the images captured by the left and right cameras. It can be obtained from the mathematical relationship:

[0027] t=y2L / (x1y2+y1L-x2y1)

[0028] x 0 = x 1 t y 0 = y ...

Embodiment 2

[0046] refer to Figure 2 to Figure 6 , the present embodiment provides a three-dimensional scanning method, comprising the following steps: A1, scanning the object to be scanned using a line laser line; A2, using two image acquisition modules to simultaneously capture the image scanned by the line laser emitting module Image information of the object to be scanned, such as Figure 4 ; A3, processing the image information to obtain the three-dimensional model information of the object to be scanned.

[0047] In the three-dimensional scanning method, the step A3 specifically performs the following operations: A31, processing the image information to obtain binarized image information, such as Figure 5 A32, extracting the two-dimensional coordinates of the laser line in the binarized image information, converting the two-dimensional coordinates into three-dimensional coordinates of the laser line; A33, obtaining the real coordinates of the object to be scanned according to the...

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Abstract

The invention discloses a three-dimensional scanning device, which comprises two image acquisition module, a line laser emission module, and an image processing module, wherein the line laser emission module is used for emitting line laser to scan an object to be scanned; the two image acquisition modules are used for simultaneously acquiring image information of the object to be scanned which isscanned by the line laser emission module; and the image processing module is used for processing the image information to obtain three-dimensional model information of the object to be scanned. The invention also discloses a three-dimensional scanning method. The three-dimensional scanning device has low production cost, is easy to operate and convenient to carry, and has high scanning speed.

Description

technical field [0001] The invention relates to the technical field of three-dimensional information, in particular to a three-dimensional scanning device and a three-dimensional scanning method. Background technique [0002] With the development of information and communication technology, people are exposed to more and more graphic images in life and work. The methods of acquiring images include using various video cameras, cameras, scanners, etc. Usually, only the plane image of the object can be obtained by using these means, that is, the two-dimensional information of the object. In many fields, such as machine vision, surface shape detection, physical profiling, automatic processing, product quality control, biomedicine, etc., the three-dimensional information of objects is essential. Therefore, how to quickly obtain the three-dimensional color information of an object and convert it into a three-dimensional digital model that can be directly processed by a computer. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N1/04H04N1/405G01B11/24
Inventor 张志毅吕之华王漫
Owner NORTHWEST A & F UNIV