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Digital-analog alignment method and device based on geometric features of points, lines and planes

A geometric feature, point-line technology, applied in the field of digital-analog alignment method and device based on point-line-surface geometric features, can solve the problems that the workpiece cannot reach the measurement accuracy or measurement range, complex structure, etc., to ensure the quality of the workpiece and detection efficiency high effect

Pending Publication Date: 2022-06-07
深圳市凌云视迅科技有限责任公司 +1
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Problems solved by technology

[0004] This application provides a digital-analog alignment method and device based on the geometric features of points, lines, and surfaces to solve the technical problem that the existing workpiece measurement technology cannot meet the measurement accuracy or measurement range for workpieces with high precision requirements or complex structures.

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  • Digital-analog alignment method and device based on geometric features of points, lines and planes

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Embodiment Construction

[0045] In order to make those skilled in the art better understand the solutions of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only The embodiments are part of the present application, but not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the scope of protection of the present application.

[0046] It should be noted that the terms "first", "second" and the like in the description and claims of the present application and the above drawings are used to distinguish similar objects, and are not necessarily used to describe a specific sequence or sequence. It is to be understood that data so used may be interchanged...

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Abstract

The invention provides a digital-analog alignment method and device based on geometric features of points, lines and planes, and the method comprises the steps: obtaining geometric features of a design model of a to-be-measured workpiece and geometric features of real-time point cloud data of the to-be-measured workpiece, the geometric features of the design model comprising a plane A, a line A and a point A; the geometric features of the real-time point cloud data comprise a plane B, a line B and a point B, the plane A corresponds to the plane B, the line A corresponds to the line B, and the point A corresponds to the point B; according to a preset alignment sequence, a transformation matrix M is obtained, and the transformation matrix M enables the real-time point cloud data to be aligned with the design model. For different workpieces to be detected, digital-analog alignment is realized according to a preset alignment sequence, then the workpieces are measured and detected, full-coverage measurement, detection and the like of the workpieces are realized, the quality of the workpieces is ensured, and the detection efficiency is high.

Description

technical field [0001] The present application relates to the technical field of workpiece measurement, and in particular, to a method and device for digital-analog alignment based on geometric features of points, lines and surfaces. Background technique [0002] In industries such as workpiece manufacturing and processing, after the workpiece is manufactured and processed, it is necessary to measure the size of the workpiece, etc. The measurement of the workpiece is an important means to ensure the quality of the workpiece. [0003] In the related art, the measurement of the workpiece is that the inspectors manually measure the various dimensions of the workpiece through the inspection tool; however, for workpieces with high precision requirements or complex structures, general manual measurement cannot meet the requirements of measurement accuracy or measurement range, and the measurement efficiency is low. . SUMMARY OF THE INVENTION [0004] The present application pro...

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Application Information

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IPC IPC(8): G06T19/20G06T7/66G06T3/60
CPCG06T19/20G06T7/66G06T3/60G06T2207/10028G06T2219/2004G06T2219/2016Y02P90/02
Inventor 李建辉彭斌姚毅全煜鸣
Owner 深圳市凌云视迅科技有限责任公司
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