US 12,437,461 B2
Machine vision detection method, detection device thereof, and detection system thereof
Yinhang Tu, Ningde (CN); and Kunpeng Cui, Ningde (CN)
Assigned to CONTEMPORARY AMPEREX TECHNOLOGY (HONG KONG) LIMITED, Hong Kong (CN)
Filed by CONTEMPORARY AMPEREX TECHNOLOGY (HONG KONG) LIMITED, Hong Kong (CN)
Filed on Jan. 17, 2024, as Appl. No. 18/415,003.
Application 18/415,003 is a continuation of application No. PCT/CN2021/134562, filed on Nov. 30, 2021.
Prior Publication US 2024/0153190 A1, May 9, 2024
Int. Cl. G06T 15/00 (2011.01)
CPC G06T 15/00 (2013.01) 19 Claims
OG exemplary drawing
 
1. A machine vision detection method, comprising:
receiving a three-dimensional image of a part to be detected comprising a cell aluminum shell and a cell top cover of a battery;
determining a plurality of sampling positions that satisfy sampling conditions;
acquiring first sample data of the three-dimensional image of the cell aluminum shell at the sampling positions and second sample data of the three-dimensional image of the cell top cover at the sampling positions;
calculating a first height difference between a plurality of first sample data and a second height difference between a plurality of second sample data;
calculating a third height difference between the first sample data and the second sample data; and
determining that the part to be detected is unqualified when any one of the first height difference, the second height difference, and the third height difference fails to meet a preset detection criterion.