| 摘要 |
Method for assessing the direction of a first user device (1) provided with a camera, relative to the positions of one or more other user devices (2) by using localization means (5) which are arranged to assess the positions of all relevant user devices (1, 2), each user device having an identifier assigned to it or its user and transmission means, and each user device, moreover, being held by either a person or by a vehicle, hereinafter called user (3). The positions of all relevant user devices, linked to their individual identifiers, are registered e.g. in a server. The camera of the first user device is aimed to a subset of all other users, enabling the camera to pick up the visual user marks of those users. The camera is then activated to make an image of those users and to transmit it to the server. Then the server tries to match the received image with the registered positions of all relevant devices, resulting in the direction information of the first user device relative to the positions of one or more of the user devices held by the subset of all other users. The method may be performed in e.g. a virtual shooting game, wherein, if the first user device is aimed at a position that matches the position of at least one other user in some predefined degree of precision and the first user device is activated to give a virtual shoot command to a game server, this shoot command is assigned to be successful. |
