The embodiment of the invention discloses a determination method, device and
system for a corresponding relation between a spatial position and a code of a
handle. According to the method, the spatialposition of the
handle and a
grayscale image sent by a camera are acquired, and the
handle emits
infrared rays at preset
flicker frequency f<handle>, wherein f<handle> is greater than f<camera>*K / 2C,f<handle> is the
flicker frequency of the handle, f<camera> is refresh frequency of the camera, K is the number of scanning lines of a camera resolution, and C is the number of scanning lines occupied by the
grayscale image of the handle; the
grayscale image is obtained after the camera photographs the handle, and the grayscale image is in a black and
white stripe shape; and the code of the handle under the spatial position is determined according to the grayscale image. Through the determination method, device and
system, the situation that when a processor is disturbed by the color of a background article when recognizing the code of the handle according to a handle color collected by the camera can be effectively avoided, the corresponding relation between the spatial position and thecode of the handle can be accurately determined, and the interaction precision of a VR
system is improved.