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Three-dimensional target for binocular or multi-view vision dimension measuring

A multi-eye vision and three-dimensional technology, applied in the field of visual measurement

Inactive Publication Date: 2015-09-09
HUBEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a three-dimensional target suitable for binocular or multi-eye visual size measurement, which solves the problems of size measurement of complex curved surfaces of mechanical parts and automatic measurement with manipulators.

Method used

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  • Three-dimensional target for binocular or multi-view vision dimension measuring
  • Three-dimensional target for binocular or multi-view vision dimension measuring
  • Three-dimensional target for binocular or multi-view vision dimension measuring

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Embodiment Construction

[0020] The present invention will be described in detail below in combination with specific embodiments.

[0021] figure 1 Shown is a three-dimensional target of a regular cube, including A measurement surface 1, D measurement surface 2, C measurement surface 3, upper end surface interface 4, B measurement surface 5, code sticker 6, code point 7, and bottom surface interface 8. There are 4 coding stickers on each measurement surface, and there are coding points on the coding stickers. The upper end surface interface 4 of the stereo target is used for fixed installation on the end of the manipulator or the hand-held device, and the lower bottom surface interface 8 is used for installing and fixing the measuring probe. figure 2 Shown are code point structure a and code paste b. A code point consists of an identification area and a location area. image 3 Shown are four coding stickers uniformly distributed on a measurement surface, defined as k1, k2, k3, k4, where k=a, b, c,...

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Abstract

The invention discloses a three-dimensional target for binocular or multi-view vision dimension measuring. The three-dimensional target adopts the structure of a regular cube, and four side surfaces of the three-dimensional target are measuring surfaces. In a measuring process, a measuring probe is fixedly mounted in a connector on the lower bottom surface of the three-dimensional target; when the three-dimensional target is placed in a binocular or multi-view vision system, the measuring head of the measuring probe is in contact with a measured point, an image of the three-dimensional target is obtained; through image processing, a measuring surface used for calculation is confirmed; information of coding points on the measuring surface is separated, and a coding value and the three-dimensional coordinate of a central locating point are calculated; then, the three-dimensional coordinate of the measured point is calculated according to the distance relation between the central locating point and the measuring head. The three-dimensional target has the benefits that the information of the measured point can be obtained as long as the three-dimensional target is positioned within a camera view field range, and then such hidden geometrical characteristics as deep holes, grooves and complex curved surfaces on measured mechanical parts can be accurately measured; the three-dimensional target is applicable to manual or automatic measuring of the sizes, tiny holes, grooves and complex curved surfaces of various mechanical parts.

Description

technical field [0001] The invention belongs to the technical field of visual measurement, and relates to a three-dimensional target suitable for binocular or multi-eye visual dimension measurement. Background technique [0002] The core content of industrial product dimension inspection is the acquisition of three-dimensional coordinates of measurement points, which mainly rely on three-dimensional measurement systems and various special instruments. High-precision, convenient and low-cost three-dimensional measurement system has become the current development trend. At present, three-dimensional measurement systems can be divided into three categories: non-contact, contact and combination of the two. [0003] The first category is non-contact three-dimensional measurement system, including laser tracking measurement system, three-dimensional scanning visual coordinate measuring machine, industrial digital close-range photogrammetry system, etc. The laser tracking measure...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01C15/02G01B11/24G01B11/00
Inventor 何涛吴庆华王高赖科学朱财升王正家杨练根王选择
Owner HUBEI UNIV OF TECH
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