Method and arrangement for determining a group of persons to be considered

Abstract

The invention relates to a method and an arrangement (1) for determining a group of persons (100) to be considered staying in an observation region (50) by considering exception markings (60) for other persons (200), wherein the group of persons (100) to be considered is a group of the persons (100) staying in the observation region (50) excluding the other persons (200) who stay in the observation region (50) and carry one of the exception markings (60). Thereby, the exception markings (60) are graphic pattern with at least one characteristic length ratio. In the method, at least one image is recorded of the observation region (50), and in the at least one image, the persons (100, 200) staying in the observation region (50) and optical signatures of the exception markings (60) are detected, wherein the detected optical signatures are assigned to detected persons (200). Furthermore, a detected group of the detected persons (100) in the observation region (50) is determined excluding the detected persons (200) with assigned detected optical signature, wherein the detected group is the group of the persons (100) to be considered. The arrangement (1) includes at least one image recording device (2) for recording at least one image of the observation region (50), a person detection module (3) for detecting in the at least one image the persons (100, 200) staying in the observation region (50), an exception marking detection module (4) for detecting optical signatures of the exception markings (60), an assignment module (5) for assigning the detected optical signatures to detected persons (200), and a group detection module (6) for determining a detected group of the detected persons (100) in the observation region (50) excluding the detected persons (200) with assigned detected optical signature, wherein the detected group is the group of the persons (100) to be considered.

Dependencies are inferred from the claim text.