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A method for determining the volume of a three-dimensional object

A determination method and technology for three-dimensional objects, applied in image data processing, instruments, calculations, etc., can solve problems such as target object damage, and achieve the effect of improving calculation efficiency

Inactive Publication Date: 2019-01-25
SOUTH CHINA UNIV OF TECH
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  • Abstract
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Problems solved by technology

There is a common problem in the above methods, which requires contact with the measured object, causing damage to the target object

Method used

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  • A method for determining the volume of a three-dimensional object
  • A method for determining the volume of a three-dimensional object
  • A method for determining the volume of a three-dimensional object

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Experimental program
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Embodiment

[0029] Such as Figure 1-Figure 3 As shown, a method for determining the volume of a three-dimensional object includes the following steps:

[0030] S1 captures the target object in the scene through the calibrated camera, obtains the two-dimensional image of the target object, obtains the depth information of the target object from the two-dimensional image, and obtains the three-dimensional coordinates of n discrete points on the surface of the target object in the world coordinate system

[0031] Specifically: process the two-dimensional image containing the target object, obtain the pixel coordinates of the target object in the image coordinate system, and then recover the depth information of the target object surface through stereo vision, and obtain the three-dimensional data point set of the target object surface.

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Abstract

The invention discloses a method for calculating the volume of a three-dimensional object, which comprises the following steps: S1, recovering the three-dimensional space coordinates of the surface ofa target curved object from a two-dimensional image; S2, dividing the target object into planar pieces; S3, calculating the area of the planar patch; S4, integrating the plane slice to obtain the volume of the target object. The invention has strong robustness for calculating the volume of the three-dimensional target object, and is suitable for the cases of known discrete point coordinates of the surface of the target object, irregular target object and the like.

Description

technical field [0001] The invention relates to the technical field of three-dimensional object geometric feature measurement, in particular to a method for determining the volume of a three-dimensional object. Background technique [0002] In the field of industrial manufacturing, it is often necessary to measure the volume of a workpiece, but due to its irregular shape, direct measurement is difficult. In recent years, with the rapid development of image processing technology and computer vision technology, due to its low cost and simple implementation, it has been more and more widely used in the industrial field. The process of measuring with computer vision technology is to restore the three-dimensional information of the three-dimensional target object from the two-dimensional image, reconstruct the shape and size of the target object in the real world, and then obtain the volume of the target object through mathematical calculation methods. [0003] Currently, direct...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T7/50G06T7/62G06T7/12G06T7/181G06T7/187
CPCG06T2207/30164G06T7/12G06T7/181G06T7/187G06T7/50G06T7/62
Inventor 胡跃明姚灵芝
Owner SOUTH CHINA UNIV OF TECH
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