US 12,444,065 B2
Apparatus, method and computer readable storage medium for measuring depth of tread groove
Jung Mo Koo, Seoul (KR); Kyoung Soo We, Osan-si (KR); Hye Yeon Lee, Ansan-si (KR); Gwang Jin Kim, Ansan-si (KR); and Hyung Il Koo, Suwon-si (KR)
Assigned to HYUNDAI MOTOR COMPANY, Seoul (KR); KIA CORPORATION, Seoul (KR); and AJOU UNIVERSITY INDUSTRY-ACADEMIC COOPERATION FOUNDATION, Suwon-si (KR)
Filed by HYUNDAI MOTOR COMPANY, Seoul (KR); KIA CORPORATION, Seoul (KR); and AJOU UNIVERSITY INDUSTRY-ACADEMIC COOPERATION FOUNDATION, Suwon-si (KR)
Filed on Jan. 6, 2023, as Appl. No. 18/093,887.
Claims priority of application No. 10-2022-0120306 (KR), filed on Sep. 22, 2022.
Prior Publication US 2024/0104756 A1, Mar. 28, 2024
Int. Cl. G06K 9/00 (2022.01); G06T 7/13 (2017.01); G06T 7/246 (2017.01); G06T 7/277 (2017.01); G06T 7/529 (2017.01); G06T 7/60 (2017.01)
CPC G06T 7/529 (2017.01) [G06T 7/13 (2017.01); G06T 7/246 (2017.01); G06T 7/277 (2017.01); G06T 7/60 (2013.01); G06T 2207/10016 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An apparatus for measuring a depth of a tread groove, comprising:
a processor; and
a memory with instructions stored thereon, wherein the instructions, when executed by the processor, enable the apparatus to:
capture a video including an upper end portion of a tire while rotating around the upper end portion of the tire having a plurality of tread grooves disposed in an outer circumferential surface of the tire, the video including a plurality of frames;
obtain, based on the plurality of frames, a cross-sectional width of the tire in units of pixels by adding widths of each of the plurality of tread grooves in units of pixels, a width of an inner block in units of pixels, and a width of an outer block in units of pixels, the inner and outer blocks are disposed on the tire, the inner block being a tire region between two tread grooves in the frame and the outer block being a tire region including a tread groove on only one side of the frame; and
convert the depth of the tread groove in units of pixels into the depth in physical units based on a ratio of the cross-sectional width of the tire in units of pixels and the cross-sectional width of the tire in the physical units.