INFORMATION PROCESSING APPARATUS, AND RECORDING MEDIUM

A sitting height estimation ECU is mounted on a vehicle and includes: an acquisition unit configured to acquire an image of a driver sitting in a driver's seat; a position detection unit configured to detect a position of a landmark on a face of the driver from the image; a crown estimation unit configured to estimate a position of a crown of the driver on the basis of the position of the landmark; and a sitting height estimation unit configured to estimate a sitting height of the driver on the basis of an estimation result obtained by the crown estimation unit.