Vehicle display device

A vehicle display device, which projects display light onto a reflective light-transmissive member provided in a vehicle, generates a virtual image by the display light reflected by the reflective light-transmissive member and displays the virtual image to be superimposed on an actual view, which is seen transparently through the reflective light-transmissive member, and also projects infrared light onto a user of the vehicle to capture an image of the user, thereby enabling detection of a viewpoint position of the user based on the captured image, the vehicle display device comprising:

• an eye detection means that detects a position of an eye of the user in the captured image;
• a viewpoint position detection means that detects the viewpoint position based on the position of the eye detected by the eye detection means;
• a feature point detection means that detects a position of a feature point of the user in the captured image;
• and
• a storage means that stores a positional relationship between the position of the eye detected by the eye detection means and the position of the feature point detected by the feature point detection means, wherein
• the viewpoint position detection means estimates, when it is difficult to detect the position of the eye by the eye detection means, the viewpoint position based on the position of the feature point detected by the feature point detection means, and the positional relationship stored in the storage means.