| With a variety of motion sensing equipments now appearing, the interactive approach is no longer confined to the mouse and keyboard. Motion sensing equipment and computer technology has become fashionable and applied to many fields.7D interactive movie is a typical multiplayer game that is quite popular. It’s based on the transmission3D viewing with the aid of motion simulation of dynamic seat, and is adding to the real-time shooting interaction and brings more immersion and entertainment to games.In this paper, we will calibrate the shooting targets based on the infrared light sources in the image that capture by video in the complex scene of7D interactive cinema. We will study the infrared feature extraction technology in complex scene and the shooting targets calibration technology of multi people real-time interactive scenarios, which can be reused. At first, we present an adaptive threshold value model based on Canny contour detection algorithm and establish the image histogram model. Then, this paper proposes a features selection method based on the image binary model. After extracting the coordinates of the two infrared points in the camera coordinate system and the scene coordinate system, we get the relationship between the two coordinate systems. The coordinate of the camera center in the scene system can be confirmed. The coordinate should be emendated because of the rotation and moving. At last, the modified coordinate of the camera center is considered as the interactive shooting point in the7D cinema system.7D interactive cinema system we designed and implemented shows a good stability and calibrates shooting targets accurately. |