US 12,393,117 B2
Marker, method for manufacturing marker, and detection target
Tadashi Furukawa, Tokyo (JP); Koujiro Ookawa, Tokyo (JP); Yukio Taniguchi, Tokyo (JP); Hideaki Fujisaki, Tokyo (JP); and Keiji Kashima, Tokyo (JP)
Assigned to DAI NIPPON PRINTING CO., LTD., Tokyo (JP)
Appl. No. 17/797,007
Filed by DAI NIPPON PRINTING CO., LTD., Tokyo (JP)
PCT Filed Jan. 29, 2021, PCT No. PCT/JP2021/003291
§ 371(c)(1), (2) Date Aug. 2, 2022,
PCT Pub. No. WO2021/157484, PCT Pub. Date Aug. 12, 2021.
Claims priority of application No. 2020-018793 (JP), filed on Feb. 6, 2020; application No. 2020-018794 (JP), filed on Feb. 6, 2020; application No. 2020-042776 (JP), filed on Mar. 12, 2020; and application No. 2020-166906 (JP), filed on Oct. 1, 2020.
Prior Publication US 2023/0068581 A1, Mar. 2, 2023
Int. Cl. G03F 7/105 (2006.01); B32B 7/12 (2006.01); B32B 17/06 (2006.01); B32B 17/10 (2006.01); B32B 25/08 (2006.01); B32B 25/20 (2006.01); B32B 27/30 (2006.01); B32B 27/32 (2006.01); B32B 27/36 (2006.01); B32B 27/38 (2006.01); G01B 11/00 (2006.01); G02B 5/02 (2006.01); G06K 19/06 (2006.01)
CPC G03F 7/105 (2013.01) [G01B 11/002 (2013.01); G02B 5/0284 (2013.01); B32B 7/12 (2013.01); B32B 17/063 (2013.01); B32B 17/10 (2013.01); B32B 25/08 (2013.01); B32B 25/20 (2013.01); B32B 27/304 (2013.01); B32B 27/32 (2013.01); B32B 27/325 (2013.01); B32B 27/36 (2013.01); B32B 27/365 (2013.01); B32B 27/38 (2013.01); B32B 2255/26 (2013.01); B32B 2255/28 (2013.01); B32B 2264/0214 (2013.01); B32B 2270/00 (2013.01); B32B 2307/412 (2013.01); B32B 2307/416 (2013.01); B32B 2519/00 (2013.01); G06K 19/06037 (2013.01)] 23 Claims
OG exemplary drawing
 
1. A marker for measurement of at least one of a position and an orientation from a camera, comprising:
a base material layer;
a first layer that is laminated on an observation side of the base material layer, and is detected in a first color; and
a second layer that is partially laminated on an observation side of the first layer, is detected in a second color different from the first color, and partially conceals the first layer,
the first layer being detectable in a region where the second layer is not laminated, and
the second layer including a resist material, wherein:
a plurality of marks are formed from the first and second layers, are each positioned at a corner region of the marker, and are configured to provide information on a relative orientation of the marker with respect to a camera that captures an image of the marker,
the marker is configured to be attached to a target,
when the camera captures an image of the attached marker, the at least one of the position and the orientation from the camera is determined from how the plurality of marks each provided at the corner region of the marker are displayed in the captured image, and
the determination of the at least one of the position and the orientation allows an automatic control device to recognize the target and perform automatic control.