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Calibration board device, vehicle-mounted camera calibrating method and device and system

A calibration board and camera technology, applied in optical observation devices, image enhancement, image analysis, etc., can solve problems such as low efficiency and low calibration accuracy, and achieve the effect of saving manual calibration time and reducing labor costs

Inactive Publication Date: 2017-05-31
IAUTO (SHANGHAI) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, in the prior art, when calibrating the external parameters of the vehicle-mounted panoramic camera, there are problems of low calibration accuracy and low efficiency.

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  • Calibration board device, vehicle-mounted camera calibrating method and device and system
  • Calibration board device, vehicle-mounted camera calibrating method and device and system
  • Calibration board device, vehicle-mounted camera calibrating method and device and system

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Embodiment Construction

[0040] In order to solve the above-mentioned problems, the technical solution in the embodiment of the present invention uses the feature that the positions of the image corners in the image of the second type of calibration plate obtained by the adjacent vehicle-mounted panoramic camera overlap in the world coordinate system, and the second group of cameras The initial external parameters are corrected, so that when performing image stitching, the seamless splicing of the images of the corresponding first group of cameras and the second group of cameras in the overlapping area of ​​the field of view can be realized, thereby improving the accuracy of parameter calibration of the vehicle-mounted panoramic camera; At the same time, even if the position of the second type of calibration board deviates from the preset placement position, the interference of the placement position of the calibration board on the calibration accuracy can be avoided and the complexity of the calibratio...

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Abstract

The invention provides a calibration board device, a vehicle-mounted camera calibrating method, device and system. The calibration board device comprises a second type calibration board arranged at the viewing field overlapping area of adjacent cameras in a vehicle-mounted panoramic camera; the second type calibration board comprises a second calibration base board, and the upper surface of the second calibration base board is provided with a second calibration area in a covered mode; the second calibration area is provided with image corner points with a preset first quantity, and is used for calibrating an initial external parameter of a corresponding vehicle-mounted panoramic camera. Through the adoption of the calibration board device, the vehicle-mounted camera calibrating method and device and the system, the accuracy of the ehicle-mounted panoramic camera calibration can be improved.

Description

technical field [0001] The invention relates to the technical field of automotive electronics, in particular to a calibration board device, a vehicle-mounted camera calibration method and device, and a system. Background technique [0002] Calibration Target can be used to correct the lens distortion of the camera in applications such as machine vision, image measurement, photogrammetry, and 3D reconstruction. Because of its good portability, the planar calibration board has been widely used in camera parameter calibration. [0003] When a plane calibration board is used for camera parameter calibration, the corresponding imaging geometric model can be established through the relationship between the positions of the feature points on the surface of the calibration board in the world coordinate system and their positions in the image coordinate system, so as to obtain high Accuracy of measurement and reconstruction results. [0004] However, in the prior art, when calibrat...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T7/80B60R1/00
CPCB60R1/00G06T2207/10004G06T2207/30252B60R2300/105B60R2300/303B60R2300/802
Inventor 孙亚锋陈勤松余旭根
Owner IAUTO (SHANGHAI) CO LTD