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We determine the confidence score (C) which indicates the extent to which the given active garment is a garment of interest for a given customer. In order to accomplish this, we first calculate the Area of the active garment (AAG), whose top-left and bottom-right spatial coordinates are denoted as AGTL(x, y) and AGBR(x, y), respectively, using Equation (3.1).

(3.1)

Then, we determine the minimum Euclidean distance (D) between the centroid of the active garment AGC(x, y)) and the coordinates of the two wrists of a person using Equations (3.2) and (3.3).

(3.2)

(3.3)

Finally, we calculate the confidence score (C) for determining the extent to which the given active garment is a garment of interest using Equation (3.4).

(3.4)

The confidence score (C) is calculated for each pair-wise distinct set of detected person’s wrists and active garment where the highest score is retained for that active garment. If this confidence score exceeds a specified confidence threshold (δ), then the active garment in consideration is considered to be a garment of interest to the given customer as his/her wrist landmarks are in close proximity with the garment. The proposed approach also notes the time duration for which such interaction takes place by keeping track of the number of frames for which the active garment is a garment of interest for the given customer.