Calibration device, calibration field and calibration method

Abstract

The invention relates to a calibration device, a calibration field and a calibration method. The calibration device comprises at least one first calibration area; the first calibration area comprises a plurality of first calibration blocks which are arranged at intervals, the vertexes of every two adjacent calibration blocks are connected, and a plurality of first calibration blocks of which the vertexes are sequentially connected in the preset direction are arranged in a manner of being in a trend from small to large on the whole. The calibration device can be suitable for calibration of the internal reference and / or the external reference of the camera, so that the image shot by the camera is displayed more clearly, the recognition rate of the calibration block of the image shot by the camera is improved, the calibration precision and accuracy are improved, the calibration speed of the internal reference and / or the external reference of the camera can be improved, and safe driving and convenient parking of a vehicle carrying the 360-degree panoramic parking auxiliary system can be realized.

Description

technical field [0001] The present disclosure relates to a calibration device, a calibration field and a calibration method. Background technique [0002] As a new technology to help drivers park safely, the 360° panoramic parking assistance system processes multiple video images collected at the same time into a single vehicle The real-time bird's-eye view of the surrounding environment (or the top view of the vehicle body) is finally displayed on the screen of the center console, so that the driver can clearly check whether there are obstacles around the vehicle, and understand the relative orientation and distance of the obstacles, and provide vehicles for automatic parking. The effective surrounding information is not only very intuitive, but also can eliminate blind spots in the field of vision, provide effective parking assistance, help the driver park the vehicle easily, improve the driver's ability to calmly control the vehicle to park in place or pass through comple...

AI Technical Summary

Problems solved by technology

[0003] The performance of the 360° panoramic parking assistance system depends on the accurate internal and external parameters of the camera. However, due to the limitation of the vehicle production process, there will always be camera installation errors in the vehicle production process, resulting in inaccurate internal and external parameters of the camera. This will affect the splicing process of multi-channel video images and the image display on the screen of the center console. Therefore, the internal and external parameters of the camera need to be calibrated before the vehicle leaves the factory to reduce or eliminate the errors of the internal and external parameters of the camera. , to ensure the accuracy and precision of the 360° panoramic parking assistance system display

However, the calibration cloth or calibration board used in the calibration site in the prior art cannot guarantee the calibration effect of the internal and external parameters of the camera.

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