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Multi-sensor calibration method, apparatus, computer device, medium and vehicle

A multi-sensor, calibration method technology, applied in the computer field, can solve the problems of limited calibration accuracy, time-consuming, complicated operation process, etc., and achieve the effect of improving accuracy

Pending Publication Date: 2019-02-15
APOLLO INTELLIGENT DRIVING (BEIJING) TECHNOLOGY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, in the calibration process between lidar, GPS / IMU (Inertial measurement unit, inertial measurement unit) and camera, a calibration process often only uses the calibration between two sensors, for example, lidar and GPS / IMU Calibration between cameras, or calibration between cameras and lidar, etc., the operation process is complicated, time-consuming, and the calibration accuracy is limited

Method used

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  • Multi-sensor calibration method, apparatus, computer device, medium and vehicle
  • Multi-sensor calibration method, apparatus, computer device, medium and vehicle
  • Multi-sensor calibration method, apparatus, computer device, medium and vehicle

Examples

Experimental program
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Embodiment 1

[0026] figure 1 It is a flow chart of the multi-sensor calibration method provided by Embodiment 1 of the present invention. This embodiment is applicable to the situation where multiple sensors are calibrated at the same time. The method can be executed by a multi-sensor calibration device, which can use software and / or Or hardware, and can be integrated on a computer device, which can be configured on a vehicle, such as an unmanned vehicle with control and computing capabilities. Such as figure 1 As shown, the method may include:

[0027] S110. Respectively acquire data collected by at least three sensors within the same period of time during the running of the vehicle.

[0028] Among them, at least three sensors include at least one type of sensor, that is, the number of sensors is greater than or equal to the number of types of sensors. Taking three sensors as an example, three types of sensors can be included, and each type corresponds to one Sensors; it may also inclu...

Embodiment 2

[0042] figure 2It is a flow chart of the multi-sensor calibration method provided by Embodiment 2 of the present invention, and this embodiment is further optimized on the basis of the foregoing embodiments. Such as figure 2 As shown, the method may include:

[0043] S210. Acquire data collected by at least three sensors during the same period of time while the vehicle is running, wherein the at least three sensors include at least one laser radar, at least one positioning device, and at least one camera.

[0044] In this embodiment, the joint calibration of multiple sensors is exemplarily described by taking sensors including at least three types of laser radars, positioning devices, and cameras as examples.

[0045] S220. Determine the trajectory of at least one laser radar in sequence according to the trajectory of the laser radar determined based on the positional relationship between the point clouds collected by the laser radar at different times.

[0046] In the po...

Embodiment 3

[0064] image 3 It is a schematic structural diagram of a multi-sensor calibration device provided in Embodiment 3 of the present invention. This embodiment is applicable to the situation of calibrating multiple sensors at the same time. The device can be implemented in the form of software and / or hardware, and can be configured on a computer device, and the computing device can be configured on a vehicle, such as a vehicle with control and computing capabilities.

[0065] Such as image 3 As shown, the device includes a data acquisition module 310, a trajectory determination module 320 and a calibration module 330, wherein:

[0066] The data acquisition module 310 is used to respectively acquire the data collected by at least three sensors within the same period of time during the driving of the vehicle;

[0067] A trajectory determination module 320, configured to determine respective trajectories based on data collected by at least three sensors;

[0068] The calibration...

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Abstract

The embodiment of the invention discloses a multi-sensor calibration method, a device, a computer device, a medium and a vehicle. Determining respective trajectories according to the data collected byat least three sensors; achieving The joint calibration of the at least three sensors by trajectory aligning the respective trajectories of the at least three sensors. The embodiment of the inventionsolves the problem of limited calibration accuracy in the prior sensor calibration method, realizes the simultaneous use of data collected by a plurality of sensors for calibration, makes maximum useof acquired multi-source information, and improves the calibration accuracy of the sensor.

Description

technical field [0001] The embodiments of the present invention relate to the field of computer technology, and in particular to a multi-sensor calibration method, device, computer equipment, media and vehicle. Background technique [0002] The unmanned driving system contains multiple sensors, such as long-range radar, lidar, short-range radar, camera, ultrasonic, GPS, and gyroscope. Through the fusion of multiple sensors, it can ensure that the vehicle control module issues safe and accurate instructions. Among them, the calibration of the sensor directly affects the accuracy of the sensing data, therefore, the calibration of the sensor is a link that cannot be ignored in the specific application process. [0003] At present, in the calibration process between lidar, GPS / IMU (Inertial measurement unit, inertial measurement unit) and camera, a calibration process often only uses the calibration between two sensors, for example, lidar and GPS / IMU Calibration between cameras...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T7/80G01D18/00
CPCG06T7/80G01D18/00G06T2207/30252G01S7/4972G01S17/86G01S17/87G06T7/70G01S7/4808G01S7/497G01S17/58
Inventor 李诗锐谢远帆周珣王亮
Owner APOLLO INTELLIGENT DRIVING (BEIJING) TECHNOLOGY CO LTD