Steel rail section profile detection method, device, apparatus, system and medium
A technology of rail section and detection method, which is applied in image data processing, instrumentation, calculation, etc., can solve the problems of difficulty in guaranteeing parallelism between linear structured light planes, unstable relative posture, and unreliable processing methods, so as to improve non-contact high-quality detection accuracy, correction of profile distortion, and easy-to-achieve effects
Inactive Publication Date: 2019-12-31
NANHUA UNIV
View PDF2 Cites 3 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0004] However, this method ignores the phenomenon that the circular arc of the distorted rail profile at the rail waist has become an elliptical arc, and it is not reliable to use the connection line of multiple circular arc endpoints as the longitudinal line of the rail; and in the presence of device vibration In the case of , the parallelism between the line structured light planes is difficult to guarantee, that is, the relative attitude between them is not fixed, which will lead to the invalidation of the parallel multi-line structured light parameters calibrated offline
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0054] In order to enable those skilled in the art to better understand the solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. Apparently, the described embodiments are only some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0055] The terms "first", "second", "third" and "fourth" in the specification and claims of this application and the above drawings are used to distinguish different objects, rather than to describe a specific order . Furthermore, the terms "comprising" and "having", and any variations thereof, are intended to cover a non-exclusive inclusion. For example, a process, method, system, product, or device compris...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention discloses a steel rail section profile non-contact detection method, device, apparatusand system and a computer readable storage medium. The method comprises the following steps: extracting characteristic pixel points on a section profile intersection line generated by intersection of each non-parallel light plane and a steel rail in a to-be-detected steel rail intersection line image; according to the camera parameters and the first optical plane parameter values, calculating coordinate values of the feature pixel points of the corresponding intersecting lines under a camera space coordinate system, and based on collinear constraints and parallel constraints satisfied by the feature pixel points, calculating other optical plane parameter values; fitting the longitudinal direction of the steel rail by utilizing the camera space coordinate values of the same type of characteristic pixel points and constructing a projection auxiliary surface vertical to the longitudinal direction of the steel rail; and reconstructing an initial section profile of the steel rail to be detected according to the space coordinate values of all the extracted feature pixel points in the camera, and projecting the initial section profile to a projection auxiliary surface, thereby effectively correcting profile distortion in the section profile of the steel rail detected by adopting a linestructured light vision method.
Description
technical field [0001] The present invention relates to the technical field of rail cross-section profile detection, in particular to a non-contact detection method, device, equipment, system and computer-readable storage medium for rail cross-section profile. Background technique [0002] The cross-sectional profile of the rail is one of the detection objects in the quality inspection of the rail, and the detection accuracy of the cross-sectional profile is related to the quality of the rail quality inspection. At present, the linear structured light vision method is generally used for non-contact detection of the profile of the rail section. During the detection process, the plane of the line structured light needs to be adjusted to be perpendicular to the longitudinal direction of the rail to obtain accurate detection results of the profile. However, in actual operation, the vibration of the detection device easily destroys the above-mentioned verticality, which leads to ...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Applications(China)
IPC IPC(8): G06T5/00G06T7/00G06T7/60G06T7/80
CPCG06T7/0004G06T7/60G06T7/80G06T2207/10004G06T2207/30108G06T5/80
Inventor 王超曾玖贞
Owner NANHUA UNIV