US 12,266,136 B2
Calibration arrangement and calibration method
Artashes Michitarian, Oberschleißheim (DE); Damian Tomasz Kacperski, Łódź (PL); and Nicola Piotto, Munich (DE)
Assigned to HARMAN BECKER AUTOMOTIVE SYSTEMS GMBH, Karlsbad-Ittersbach (DE)
Filed by Harman Becker Automotive Systems GmbH, Karlsbad-Ittersbach (DE)
Filed on Nov. 29, 2022, as Appl. No. 18/059,857.
Claims priority of application No. 21213111 (EP), filed on Dec. 8, 2021.
Prior Publication US 2023/0177725 A1, Jun. 8, 2023
Int. Cl. G06T 7/80 (2017.01); B60R 1/27 (2022.01)
CPC G06T 7/80 (2017.01) [B60R 1/27 (2022.01); G06T 2207/30252 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A calibration arrangement, comprising:
a floor space configured to form a parking area for a vehicle; and
a calibration pattern visible on a floor surrounding the floor space; wherein
a first portion of the calibration pattern is arranged on a first side of the floor space, and a second portion of the calibration pattern is arranged on a second side of the floor space opposite the first side;
each of the first portion and the second portion of the calibration pattern comprises a plurality of identical first sub-patterns and a second sub-pattern different from the first sub-patterns;
the first side and the second side of the floor space have a first length;
each of the first portion and the second portion of the calibration pattern has a second length in a direction that is parallel to the first side and the second side of the floor space; and
the second length is greater than the first length, wherein
each of the plurality of identical first sub-patterns comprises a plurality of first shapes arranged in a regular pattern, and a plurality of second shapes arranged in an irregular pattern, wherein
the plurality of first shapes comprises a first sub-group having a first color, and a second sub-group having a second color, wherein the first color differs from the second color, and wherein
each of the first shapes of the first sub-group is black and has a square shape,
each of the first shapes of the second sub-group is white and has a square shape,
each of the second shapes is black and has a round shape,
the first shapes of the first sub-group and the first shapes of the second sub-group are arranged in a chessboard pattern, and
a different sub-group of the second shapes is arranged on each of the shapes of the second sub-group that is fully encircled by shapes of the first sub-group.