Method and device for correcting vehicle view cameras

Patent metadata

Field	Value
Publication number	US-11548452-B2
Application number	US-201816767814-A
Country	US
Kind code	B2
Filing date	Nov 30, 2018
Priority date	Dec 1, 2017
Publication date	Jan 10, 2023
Grant date	Jan 10, 2023

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

The invention claimed is:

1. A method for correcting a plurality of cameras by using a plurality of pattern members, the method comprising:
receiving pattern information of the plurality of pattern members by using the plurality of cameras disposed on a circumference of a vehicle being driven, wherein each pattern member of the plurality of pattern members is disposed on a ground on which the vehicle is being driven, and wherein the pattern information is information of only the plurality of pattern members disposed on the ground;
calculating a first parameter based on the received pattern information;
calculating trajectory information of the vehicle based on a difference in extracted rotation angle information and axis information of the pattern information and rotation angle information and axis information of set 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 calculating of the first parameter comprises:
extracting the 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.

3. The method according to claim 1 , wherein each pattern member of the plurality of pattern members comprises a plurality of circular shapes.

4. The method according to claim 3 , wherein each pattern member of the plurality of pattern members comprises a square shape having the plurality of circular shapes disposed therein.

5. A method for correcting a plurality of cameras by using a plurality of pattern members, the method comprising:
receiving pattern information of the plurality of pattern members by using the 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,
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, and

wherein the calculating of the trajectory information of the vehicle comprises:
extracting the 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 extracted rotation angle information and axis information and the rotation angle information and axis information of the set pattern information.

6. The method according to claim 5 , 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 around the circumference of the vehicle on a ground on which the vehicle is driving.

7. The method according to claim 5 , 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.

8. The method according to claim 5 , 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.

9. The method according to claim 8 , 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.

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

11. A device for correcting a plurality of cameras, comprising:
the 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 while the vehicle is being driven along a ground, wherein each pattern member of the plurality of pattern members is disposed on the ground, and wherein the pattern information is information of only the plurality of pattern members disposed on the ground;
calculate a first parameter based on a difference in extracted rotation angle information and axis information of the pattern information and rotation angle information and axis information of set 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.

12. The device according to claim 11 , wherein the calculating of the trajectory information of the vehicle comprises:
extracting the rotation angle information and axis information from the pattern information; and
comparing the rotation angle information and axis information to the rotation angle information and axis information of set pattern information to obtain the difference in the extracted rotation angle information and axis information of the pattern information and the rotation angle information and axis information of the set pattern information.

13. The device according to claim 11 , wherein each pattern member of the plurality of pattern members comprises a plurality of circular shapes.

14. The device according to claim 13 , wherein each pattern member of the plurality of pattern members comprises a square shape having the plurality of circular shapes disposed therein.

Assignees

• Lg Innotek Co Ltd

Inventors

• Ha Ju Sung

Classifications

• G06T2207/30208

  Marker matrix · CPC title

• G06T3/20

  Linear translation of whole images or parts thereof, e.g. panning · CPC title

• G06T2207/10016

  Video; Image sequence · CPC title

• H04N23/90

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

• H04N17/002

  for television cameras · CPC title