Seated Passenger Height Estimation

Disclosed are methods, apparatuses and computer program products configured for estimating a height of a passenger seated at a vehicle seat. In an aspect, one or more images of a portion of a vehicle interior are received. The images show at least a part of the passenger seated on the vehicle seat and/or at least a part of the vehicle seat, but at least one of the images shows at least the part of the passenger seated on the vehicle seat. Based on the images, a number of body keypoints indicative of the location of defined body portions of the passenger are determined and a number of seat keypoints indicative of the location of defined points of the vehicle seat is determined. Based at least on a correlation of the determined body and seat keypoints, the height of the passenger is estimated and outputted to a seat occupancy classification system.