Reliability of the parameters calibrating algorithm of the virtual studio camera

Tsai’s method to calculating the parameters of the video camera and its default to apply to the virtual studio system is introduced firstly. At the following, the principle of the solution to calculate the parameters of the video camera based on the matrix method is put forward. At last a new preprocessing method of calibrating data based on the perspective transforming principle to get reliable solution is obtained. This algorithm has already been used in the domestic virtual studio system and expands the applied range of Tsai’s algorithm.. Index Terms -patfern recognition; virtual studio; camera tracking; perspective transform.