Method and device for correcting camera

Patent metadata

Field	Value
Publication number	US-2020298769-A1
Application number	US-201816767814-A
Country	US
Kind code	A1
Filing date	Nov 30, 2018
Priority date	Dec 1, 2017
Publication date	Sep 24, 2020
Grant date	—

Abstract

A method for correcting a camera by using a plurality of pattern members placed on the ground of a vehicle enables receiving pattern information of a plurality of pattern members by using a plurality of cameras disposed on the circumference of a vehicle being driven, calculating a first parameter on the basis of the pattern information, calculating trajectory information of the vehicle by using the pattern information, and calculating a second parameter by correcting the first parameter on the basis of the trajectory information of the vehicle.

First claim

1 . A method for correcting a camera by using a plurality of pattern members, the method comprising:
receiving pattern information of the plurality of pattern members by using a plurality of cameras disposed on a circumference of a vehicle being driven; calculating a first parameter based on the received pattern information; calculating trajectory information of the vehicle by using the pattern information; and calculating a second parameter by correcting the first parameter based on the trajectory information of the vehicle.

2 . The method according to claim 1 , wherein the pattern information is acquired from each of the plurality of pattern members disposed on the ground of the vehicle.

3 . The method according to claim 1 , wherein the calculating of the first parameter comprises:
extracting rotation angle information and axis information from the pattern information; and calculating the first parameter based on the extracted rotation angle information and axis information.

4 . The method according to claim 3 , wherein the calculating of the trajectory information of the vehicle comprises:
extracting rotation angle information and axis information from the pattern information; comparing the rotation angle information and axis information to rotation angle information and axis information of set pattern information; and calculating the trajectory information of the vehicle based on a difference in the rotation angle information and axis information and the rotation angle information and axis information of the set pattern information.

5 . The method according to claim 4 , wherein the set pattern information is acquired and set when the vehicle is driven in a linear direction between the plurality of pattern members disposed on the ground on the circumference of the vehicle.

6 . The method according to claim 4 , wherein the comparison comprises:
comparing the rotation angle information to the rotation angle of the set pattern information; and comparing the axis information to the axis information of the set pattern information.

7 . The method according to claim 4 , wherein the calculating of the second parameter comprises:
determining whether the trajectory of the vehicle matches the linear direction; and calculating the second parameter by correcting the first parameter when the trajectory of the vehicle does not match the linear direction.

8 . The method according to claim 7 , wherein the calculated second parameter is differently corrected depending on a deviation range in which the trajectory of the vehicle is deviated from the linear direction.

9 . The method according to claim 8 , wherein, as the deviation range increases, a correcting width of the second parameter increases.

10 . A device for correcting a camera, comprising:
a plurality of cameras disposed on a circumference of a vehicle; and a processor, wherein the processor is configured to: receive pattern information of a plurality of pattern members, which are acquired by the plurality of cameras that are being driven along the ground on which the plurality of pattern members are disposed; calculate a first parameter based on the pattern information; calculate trajectory information of the vehicle based on the pattern information; and calculate a second parameter by correcting the first parameter based on the trajectory information of the vehicle.

Assignees

• Lg Innotek Co Ltd

Inventors

• Ha Ju Sung

Classifications

• G06V10/245

  by locating a pattern; Special marks for positioning · CPC title

• B60R11/04 Primary

  Mounting of cameras operative during drive; Arrangement of controls thereof relative to the vehicle · CPC title

• H04N23/90

  Arrangement of cameras or camera modules, e.g. multiple cameras in TV studios or sports stadiums · CPC title

• H04N23/95

  Computational photography systems, e.g. light-field imaging systems · CPC title

• H04N17/002

  for television cameras · CPC title