公开(公告)号：US12033345B2

公开(公告)日：2024-07-09

申请号：US17463771

申请日：2021-09-01

Applicant: KunShan Go-Visionox Opto-Electronics Co., Ltd

Inventor： Yuan Zhang ,  Naixi Chen

IPC: G06T7/70 ,  G06T7/00 ,  G06T7/13 ,  G06T7/50 ,  G06V10/22

CPC classification number: G06T7/70 ,  G06T7/0004 ,  G06T7/13 ,  G06T7/50 ,  G06V10/22 ,  G06T2207/30108 ,  G06V2201/06

Abstract: A positioning method including: acquiring a gray-scale image of an object to be measured to determine a gray-scale value of each pixel on the gray-scale image; determining a target area to be measured and a first gray-scale change area adjacent to the target area to be measured based on the gray-scale value of each pixel; determining a target gray-scale value based on a gray-scale value of the target area to be measured and a gray-scale value of each pixel in the first gray-scale change area; determining target pixels that conform to the target gray-scale value in the first gray-scale change area, to use the target pixels as actual edge pixels of the target area to be measured; and determining a relative distance between a center position of the target area to be measured and a reference position, to obtain position information of the target area.