CPC G06K 7/1417 (2013.01) [F16C 41/008 (2013.01); G06K 19/06037 (2013.01)] | 22 Claims |
18. A method for reading a two-dimensional code included in a bearing component which is an annular member with the two-dimensional code which has a shape with a maximum circumferential dimension longer than a maximum radial dimensional, wherein the two dimensional code is provided on a flat part of the annular member, and at least one dot row among a plurality of dot rows arranged in a longitudinal direction of the two-dimensional code has a line pattern in which all dots are marked, the method comprising:
imaging the bearing component, and
reading information of the two-dimensional code from the captured image of the bearing component,
wherein the information of the two-dimensional code is read from one of captured images of a captured image group obtained by moving an imaging optical system for imaging the bearing component and imaging a plurality of different locations in the circumferential direction of the bearing.
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