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

Claim 11:
12. The method of claim 10, wherein:
determining that the third set of feature points matches feature points comprising the third digital fingerprint comprises:
identifying feature points or groups of feature points in the third set of feature points that have some similarity to feature points or groups of feature points in the third digital fingerprint;
assigning a second confidence interval to each of the identified feature points or groups of feature points having some similarity;
calculating a second correlation value, comprising the number of sets of similar points or groups of points whose confidence interval exceeds the first threshold;
determining that the second correlation value exceeds the second threshold;

determining that the fourth set of feature points matches the feature points comprising the fourth digital fingerprint comprises:
identifying feature points or groups of feature points in the fourth set of feature points that have some similarity to feature points or groups of feature points in the fourth digital fingerprint;
assigning a third confidence interval to each of the identified feature points or groups of feature points having some similarity;
calculating a third correlation value, comprising the number of sets of similar points or groups of points whose confidence interval exceeds the first threshold;
determining that the third correlation value exceeds the second threshold; and

determining that the fifth set of feature points matches the feature points comprising the fifth digital fingerprint comprises:
identifying feature points or groups of feature points in the fifth set of feature points that have some similarity to feature points or groups of feature points in the fifth digital fingerprint;
assigning a fourth confidence interval to each of the identified feature points or groups of feature points having some similarity;
calculating a fourth correlation value, comprising the number of sets of similar points or groups of points whose confidence interval exceeds the first threshold; and
determining that the fourth correlation value exceeds the second threshold.