SYSTEM AND METHOD FOR MARKER PLACEMENT

• US 20180372467A1
• Filed: 06/21/2017
• Published: 12/27/2018
• Est. Priority Date: 06/21/2017
• Status: Active Grant

• Current Assignee: Denso Ten America Limited (DENSO Corporation)
• Original Assignee: Fujitsu Ten Corporation Of America (DENSO Corporation)
• Inventors: YOKOYAMA, Masato, IWABUCHI, Hiroshi
• Granted Patent: US 10,466,027 B2
• Time in Patent Office: Days
• CPC Class Codes: B60Y 2304/09 Testing or calibrating during manufacturing
• CPC Class Codes: G01B 11/272 using photoelectric detection means
• CPC Class Codes: G01B 3/04 rigid
• CPC Class Codes: G06T 7/80 Analysis of captured images to determine intrinsic or extrinsic camera parameters, i.e. camera calibration
• CPC Class Codes: H04N 17/002 for television cameras
• CPC Class Codes: H04N 7/181 for receiving images from a plurality of remote sources

Abstract

A system for marker placement includes a plurality of puzzle blocks connectable by a connection mechanism. The plurality of puzzle blocks include a plurality of markers positioned in a predetermined configuration. The puzzle blocks are connected together by the connection mechanism to surround a sensor for calibration of the sensor with the plurality of markers. The puzzle blocks include one or more sizes and have a quantity based on a calibration parameter of the sensor.

Claims

1. A system for marker placement, comprising:

a plurality of puzzle blocks connectable by a connection mechanism; and

the plurality of puzzle blocks including a plurality of markers positioned in a predetermined configuration, wherein

the puzzle blocks are connected together by the connection mechanism to surround a sensor with the plurality of markers; and

the puzzle blocks include one or more sizes and have a quantity based on a calibration parameter of the sensor.

2. The system for marker placement of claim 1, wherein

the connection mechanism includes male and female hook type members connectable to lock the plurality of puzzle blocks together.

3. The system for marker placement of claim 1, wherein

the sensor for calibration is on a vehicle.

4. The system for marker placement of claim 1, wherein

the puzzle blocks include a predetermined configuration for sensor calibration for each of a plurality of vehicles.

5. The system for marker placement of claim 1, further comprising:

the puzzle blocks including;

a front center marker;

a front adjustable slider;

an adjustable front spacer;

a front cross marker;

a front lateral cross marker;

a lateral spacer;

an adjustable lateral spacer;

a movable side marker;

a lateral adjustable slider;

a rear lateral leg cross marker;

a rear lateral cross marker;

a rear cross marker;

an adjustable rear spacer;

a rear center marker; and

a rear adjustable slider.

6. The system for marker placement of claim 5, wherein

the lateral spacers include numbered positioning holes.

7. The system for marker placement of claim 6, wherein

the movable side marker includes a male member on a bottom surface connectable to the lateral spacer numbered positioning holes.

8. The system for marker placement of claim 6, wherein

the front cross marker, the lateral cross marker and the rear cross marker are placed to calibrate at least one of a 360-degree view camera, a blind spot sensor, a park assist camera, a front camera and a lane detection camera.

9. The system for marker placement of claim 8, wherein

the rear cross marker is used to position a blind spot tool to calibrate a blind spot sensor.

10. The system for marker placement of claim 8, wherein

the rear center marker is used to position a park assist tool to calibrate the park assist camera.

11. The system for marker placement of claim 8, wherein

the front center marker is used to position a front camera tool to calibrate the front camera.

12. The system for marker placement of claim 8, wherein

the front center marker is used to position a lane detection tool to calibrate the lane detection camera.

13. A method for marker placement, comprising:

securing a side line to each of a left rear cross section of a rear bumper and a chassis body and a right rear cross section of a rear bumper and a chassis body of a vehicle,

attaching a side weight to each side line so that each side line aligns with a corresponding predetermined position on a lateral leg cross marker,

securing a front line to an underside of a front bumper edge of the vehicle,

attaching a front weight to the front line so that the front line aligns with a center of a front center marker,

securing a rear line to an underside of a rear bumper edge of the vehicle,

attaching a rear weight to the rear line so that the rear line aligns with a center of a rear center marker, and

assembling a plurality of puzzle blocks by a connection mechanism, the assembling including,

connecting a front center marker to a first end of an adjustable front spacer,

connecting a second end of the adjustable front spacer to a first end of a first end of a front cross marker,

connecting a second end of the front cross marker to a first end of a front lateral cross marker,

connecting a second end of the front lateral cross marker to a first end of an adjustable lateral spacer,

attaching a movable side marker to a top surface of the adjustable lateral spacer,

connecting a second end of the adjustable lateral spacer to a first end of a rear lateral leg cross marker,

connecting a second end of the rear lateral leg cross marker to a first end of a rear cross marker,

connecting a second end of the rear cross marker to a first end of a rear center marker,

connecting a front adjustable slider to the center of the front center marker to align a front of the vehicle with the center of the front center marker,

connecting a rear adjustable slider to the center of the rear center marker to align a rear of the vehicle with the center of the rear center marker, and

connecting a lateral side adjustable slider to the corresponding predetermined position on the lateral cross marker to align a side of the vehicle with the predetermined position on the lateral cross marker.

14. The method for marker placement of claim 13, wherein

the connection mechanism includes male and female hook type members connectable to lock the plurality of puzzle blocks together.

15. The method for marker placement of claim 13, wherein

the lateral spacers include numbered positioning holes.

16. The method for marker placement of claim 15, wherein

the movable side marker includes a male member on a bottom surface connectable to the lateral spacer numbered positioning holes.

17. The method for marker placement of claim 13, wherein

the puzzle blocks are connected to surround the vehicle.

18. The method for marker placement of claim 13, wherein

the puzzle blocks include a predetermined configuration for each of a plurality of vehicles.

19. The method for marker placement of claim 13, wherein

the front cross marker, the lateral cross marker and the rear cross marker is placed to calibrate at least one of a 360-degree view camera, a blind spot sensor, a park assist camera, a front camera and a lane detection camera.

20. The method for marker placement of claim 19, wherein

the rear cross marker is used to position a blind spot tool to calibrate a blind spot sensor.

21. The method for marker placement of claim 19, wherein

the rear center marker is used to position a park assist tool to calibrate the park assist camera.

22. The method for marker placement of claim 19, wherein

the front center marker is used to position a front camera tool to calibrate the front camera.

23. The method for marker placement of claim 19, wherein

the front center marker is used to position a lane detection tool to calibrate the lane detection camera.