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Automobile detection non-common-field-of-view camera global calibration system and method based on surface light field

A calibration system and common viewing technology, applied in the direction of measuring devices, optical devices, instruments, etc.

Pending Publication Date: 2020-05-19
JILIN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention aims at solving the problem of calibrating the homography relationship between multiple cameras without a common field of view in the process of vehicle inspection, and proposes a flexible and simple, safe and reliable operation, simple structure, and no need to increase the long-distance non-communicated cameras. Field-of-view dual-camera calibration system and method

Method used

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  • Automobile detection non-common-field-of-view camera global calibration system and method based on surface light field
  • Automobile detection non-common-field-of-view camera global calibration system and method based on surface light field
  • Automobile detection non-common-field-of-view camera global calibration system and method based on surface light field

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Embodiment Construction

[0068] Below in conjunction with accompanying drawing, the present invention will be described in further detail:

[0069] refer to Figure 1 to Figure 5 , the global calibration system of the car detection non-common field of view camera based on the surface light field includes a laser board box 1, a laser board box bracket 2, a left camera 3, a left camera bracket 4, a right camera 5, and a right camera bracket 6 , surface laser 7 and cylindrical target 8;

[0070] The laser board box bracket 2, the left camera bracket 4 and the right camera bracket 6 are all triangular brackets with adjustable height. The laser board box bracket 2, the left camera bracket 4, the right camera bracket 6 and the cylindrical target 8 are placed on the ground Above, the left camera 3 and the right camera 5 are wide-angle industrial cameras equipped with narrow-band filters, and the left camera 3 and the right camera 5 connect with the left camera bracket 4 and the right camera bracket through ...

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Abstract

The invention discloses an automobile detection non-common-field-of-view camera global calibration system and method based on a surface light field, and aims to solve the problem of automobile detection non-common-field-of-view camera global calibration based on the surface light field. The automobile detection common-field-of-view-free camera global calibration system based on the surface light field is mainly composed of a laser plate box (1), a laser plate box support (2), a left camera (3), a left camera support (4), a right camera (5), a right camera support (6), a surface laser (7) and acylindrical target (8). The invention discloses an automobile detection non-common-view-field camera global calibration method based on a surface light field. The method comprises the steps of acquiring an image, resolving a homography matrix converted from the cylindrical target (8) to a coordinate system of the left camera (3) according to the image acquired by the left camera (3), and the like. The automobile detection non-common-field-of-view camera global calibration system and method based on the surface light field are simple in structure and reliable in performance.

Description

technical field [0001] The invention relates to a measurement device and a measurement method in the field of vehicle detection, more specifically, it is a system and method for global calibration of a vehicle detection non-common field of view camera based on a surface light field. Background technique [0002] Automobile inspection is one of the important research contents of automobile passability and driving safety inspection, and visual inspection has gradually become a key technology to improve the efficiency and accuracy of automobile inspection due to its advantages of non-contact, low cost and high precision in recent years. Machine vision can be used to detect vehicle wheel alignment parameters, vehicle wheelbase difference detection, vehicle shape detection, multi-axle axle deflection detection, vehicle model identification, overloading and many other fields. However, currently commonly used visual inspection methods, such as single-camera systems, cannot meet the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B11/00
CPCG01B11/00
Inventor 徐观陈芳戴建国苏建张立斌刘玉梅陈熔单红梅林慧英李晓韬沈慧朱尧平
Owner JILIN UNIV
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