Control apparatus and control method for determining relation of persons included in an image, and storage medium storing a program therefor

A method for a control apparatus, the method comprising:

• detecting each person included in an image which includes a plurality of persons;
• associating, as an association step, each detected person with another person included the image in a case where at least one of positions of the detected person and the another person, directions of faces of the detected person and the another person, or distances between the detected person and the another person meet a predetermined criteria;
• causing a display device to perform display processing to select, as an associated person, one person associated in the association step, to determine, as a not associated person, a person included in the image who is not associated with any other person included in the image, and to distinguish between the associated person and the not associated person;
• and
• causing a notification device to perform notification processing in a case where it is determined that a period of time in which the distinguished not associated person is contained in the image exceeds a threshold value.

A non-transitory computer-readable storage medium storing a program to cause a computer to perform a method for a control apparatus, the method comprising:

• detecting each person included in an image which includes a plurality of persons;
• associating, as an association step, each detected person with another person included the image in a case where at least one of positions of the detected person and the another person, directions of faces of the detected person and the another person, or distances between the detected person and the another person meet a predetermined criteria;
• causing a display device to perform display processing to select, as an associated person, one person associated in the association step, to determine, as a not associated person, a person included in the image who is not associated with any other person included in the image, and to distinguish between the associated person and the not associated person;
• and
• causing a notification device to perform notification processing in a case where it is determined that a period of time in which the distinguished not associated person is contained in the image exceeds a threshold value.