a first reception section configured to receive image information acquired by an image sensor;

a second reception section configured to receive sound information that is acquired by one or plural directional microphones and that is generated for at least a partial region in a field of the image sensor;

an association processing section configured to associate the sound information with a pixel address of the image information indicating a position in the field;

an object detection section configured to detect, from the image information, at least a part of an object that is present in the field; and

a process execution section configured to execute a predetermined process on the object on a basis of a result of the association performed by the association processing section,

wherein the predetermined process is a function of whether or not the position in the field at which the sound information is associated overlaps with an area within the field at which the object is located, and

wherein the process execution section operates to distinguish between determinations that:

(i) the object appears to be moving and is actually moving in the field based on a determination that the sound information indicates an acoustic level above a predetermined threshold and the position in the field that is associated overlaps with the area within the field at which the object is located; and

(ii) the object appears to be moving and is not actually moving in the field based on a determination that the sound information indicates an acoustic level not above the predetermined threshold and the position in the field that is associated overlaps with the area within the field at which the object is located.