A structural member production information visual measurement method
A technology for production information and visual measurement, which is applied in the field of visual measurement and can solve the problems of expensive high-precision industrial cameras and labor.
Active Publication Date: 2021-09-07
金成技术股份有限公司
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[0004] Two-dimensional measurement often requires the object to be measured to be parallel to the imaging surface, that is, the camera is facing the surface of the vertical object, and the requirements are relatively strict; three-dimensional measurement often requires the use of specific structures such as depth cameras or binocular cameras, which undoubtedly requires the addition of new hardware devices, and requires Expensive high-precision industrial cameras; modeling software combined with 3D annotation often requires manual model construction and professional engineers for manual annotation
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[0051] In order to further explain the technical means and effects of the present invention to achieve the intended purpose of the invention, the specific implementation methods, The structure, characteristics and effects thereof are described in detail as follows. In the following description, different "one embodiment" or "another embodiment" do not necessarily refer to the same embodiment. Furthermore, the particular features, structures, or characteristics of one or more embodiments may be combined in any suitable manner.
[0052] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field of the invention.
[0053] The factory that produces the workpiece first processes the structural parts according to the design drawings. After the processing is completed, it needs to be compared with the two-dimensional design drawings to determine whether there is a large error a...
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The invention relates to the technical field of visual measurement, in particular to a structural member production information visual measurement method. The method comprises the following steps: receiving continuous multi-frame images acquired by a user side around a target structural member, and identifying each processing feature of each surface of the target structural member in each frame of image; respectively establishing an imaging model for the continuous multi-frame image to obtain a deviation included angle between the surface of the target structural member and the imaging surface, and fitting a relation curve between an imaging point corresponding to the deviation included angle and a projection point by using the imaging model; obtaining coordinates of projection points corresponding to the imaging points, and taking the proportion of the projection length between each machining feature and other machining features as the size proportion; correcting the size proportion sequence according to the size of the size proportion confidence to obtain a standard size proportion; and obtaining size information of all the processing features according to the standard size proportion, generating production information of the target structural member, and sending the production information to the user side. According to the embodiment of the invention, the high-precision measurement requirement can be realized through the user side with low power consumption.
Description
technical field [0001] The invention relates to the technical field of visual measurement, in particular to a visual measurement method for production information of structural parts. Background technique [0002] After the structural parts processed according to the design drawings are completed, it is necessary to measure its three-dimensional size information and compare it with the corresponding two-dimensional design drawings to judge whether the structural parts are qualified. It is convenient and quick to use visual measurement to measure three-dimensional size information. The current visual measurement technology is divided into two categories: two-dimensional and three-dimensional. Three-dimensional measurement includes binocular stereo vision technology, time-of-flight method, laser triangulation and structured light 3D measurement technology. Most of the mechanical structural parts use modeling software combined with 3D annotation (Model Based Definition, MBD) ...
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IPC IPC(8): G06K9/00G06K9/34G06T7/50G06T7/60G06T7/70G06N3/04
CPCG06T7/50G06T7/60G06T7/70G06N3/04
Inventor 郑代顺姬国华路秋媛
Owner 金成技术股份有限公司