A method for three-dimensional comparison between spatial coordinate points and point cloud points

A technology of spatial coordinates and 3D comparison, applied in image data processing, instruments, 3D modeling, etc., can solve the problem of lack of local 3D reconstruction effect, and achieve the effect of small external influence, high precision and high flexibility

Inactive Publication Date: 2019-03-12
SHAZHOU PROFESSIONAL INST OF TECH
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  • Summary
  • Abstract
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  • Claims
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AI Technical Summary

Problems solved by technology

The prior information used in the existing 3D reconstruction is all objective information, and there is still a lack of effective methods to improve the effect of local 3D reconstruction by using human subjective perception

Method used

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  • A method for three-dimensional comparison between spatial coordinate points and point cloud points

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Embodiment 1

[0026] 1. For 3D scanning, it is first necessary to ensure that the 3D scanner is built in a stable environment (including light environment: avoid strong light and backlighting; the stability of the 3D scanner, etc.), to ensure that the 3D scanning results will not be affected by external factors. Impact. Calibrating the machine is a particularly critical step before 3D scanning. During the calibration process, the position of the scanning device relative to the scanned object should be calculated according to the preset scanning mode of the 3D scanner. Some object surfaces are more difficult to scan. For these objects, it is necessary to use a matte white imaging agent to cover the surface of the scanned object, and spray a thin layer of imaging agent on the scanned object. The purpose is to better scan the three-dimensional features of the object, and the data will be more accurate. Use the 3D scanner to capture the 3D data of the scanned object from different angles, cha...

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Abstract

The invention discloses a method for three-dimensional comparison between a spatial coordinate point and a point cloud position point, At first, that data of the relate workpiece is extracted by use ahand-held three-dimensional scanner, Then the original information of the workpiece is measured by the coordinate measuring machine, and two sets of three-dimensional point cloud data are obtained, both of which are point cloud data of a workpiece sample surface. Then the two sets of data are imported into Pro / ENGINEER software, and the spatial coordinate model and the reconstructed point cloud model are compared and analyzed. The method is relatively simple and easy to use, and has the advantages of high precision, high sex-to-noise ratio, minimal external influence, high flexibility and thelike.

Description

technical field [0001] The invention relates to the field of digital geometry, and more specifically relates to a three-dimensional comparative analysis of spatial coordinate points and point cloud position points. Background technique [0002] With the rapid development of computer technology, 3D reconstruction based on images to restore 3D information of objects or scenes has been widely used in the field of industrial augmented reality. 3D scene reconstruction is a core content in the field of computer vision. The model results generated by 3D reconstruction are mainly the spatial coordinates of the target or scene surface points, which have a wide range of application values ​​in computer, electronic entertainment, virtual display and other fields. [0003] The 3D reconstruction process from 2D image to 3D stereo is not only an aggregation process that transforms point image information into an overall description, but also can improve and enhance the information aggrega...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T7/70G06T17/00
CPCG06T17/00G06T2207/10028G06T7/70
Inventor 徐向红薛雨凡
Owner SHAZHOU PROFESSIONAL INST OF TECH
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