| 摘要 |
The invention relates to a system and a method for determining the position and the orientation of a user in relation to a real environment viewed by said user. In order to enable the determination of the pose of a user inside a spatially extended real environment as efficiently as possible, a method is proposed in which sections (10,11) of the real environment, which lie in the viewing field of the user, are acquired with a camera (20), the method having an initialization phase comprising the following procedural steps: selection of a partial model (0..8) suitable for determining an initial pose of the user from an overall model of the real environment, broken down into various partial models (0..8), the selection being performed in accordance with a section (10,11) of the real environment acquired by the camera (20) during the initialization phase, and determination of the initial pose of the user by comparison of the section (10,11) with the partial model (0..8). Said method also has a tracking phase, following the initialization phase, in which the pose of the user is determined continuously, starting from the initial pose by means of a tracking algorithm, the initialization phase being restarted as soon as the accuracy of the determination of the pose, achieved or achievable in the tracking phase, no longer satisfies a predefined quality criterion. |
