HEAD-MOUNTED DISPLAY DEVICE, STATE DETERMINATION DEVICE, METHOD FOR CONTROLLING HEAD-MOUNTED DISPLAY DEVICE, METHOD FOR CONTROLLING STATE DETERMINATION DEVICE, AND PROGRAM

To provide a technique that can accurately estimate (determine) at least one of the position and the attitude of a head-mounted display device.SOLUTION: A head-mounted display device has: first imaging means; projection means that projects a pattern image within an imaging range of the first imaging means; second imaging means that picks up an image of a range of the pattern image not overlapping the projection range; first acquisition means that, based on a first image picked up by the first imaging means, acquires first information related to a state including at least one of the position and the attitude of the head-mounted display device; second acquisition means that, based on a second image picked up by the second imaging means, acquires second information related to the state of the head-mounted display device; and determination means that, based on the first information and the second information, determines the state of the head-mounted display device.SELECTED DRAWING: Figure 1 【課題】頭部装着型表示装置の位置と姿勢の少なくとも一方を高精度に推定（判断）することのできる技術を提供する。【解決手段】本発明の頭部装着型表示装置は、第１撮像手段と、前記第１撮像手段の撮像範囲にパターン画像を投影する投影手段と、前記パターン画像の投影範囲に重ならない範囲を撮像する第２撮像手段と、前記第１撮像手段によって撮像された第１画像に基づいて、前記頭部装着型表示装置の位置と姿勢の少なくとも一方を含んだ状態に関する第１情報を取得する第１取得手段と、前記第２撮像手段によって撮像された第２画像に基づいて、前記頭部装着型表示装置の前記状態に関する第２情報を取得する第２取得手段と、前記第１情報と前記第２情報に基づいて、前記頭部装着型表示装置の前記状態を判断する判断手段とを有することを特徴とする。【選択図】図１