Patent ID: 11954843
Assignee: LENNOX INDUSTRIES INC.
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 15:
16. The non-transitory computer-readable medium of claim 15, wherein the instructions, when executed by the hardware processor, further cause the hardware processor to:
receive an indication that an apparatus in a tested state should comprise an apparatus in the third assembled state with the fifth digital fingerprint;
receive video footage from a fourth camera configured to record video of apparatuses in the tested state, wherein the tested state comprises the third assembled state that has been subject to a quality control test or a fully assembled state that has been subject to the quality control test;
isolate a sixth frame comprising an image of an apparatus in the tested state;
generate a fifth set of feature points comprising at least one selected from an edge, a corner, a blob, or a ridge;
determine that the fifth set of feature points matches the feature points comprising the fifth digital fingerprint;
determine that the apparatus in the tested state did not pass the quality control test;
determine the dates and times when the apparatus was assembled in the first assembled state, assembled in the second assembled state; and/or assembled in the third assembled state; and
identify the other apparatuses manufactured within a time window comprising the dates and times when the apparatus was assembled in the first assembled state, assembled in the second assembled state, and/or assembled in the third assembled state.