Tracking Method and Tracking System Using the Same

A tracking system, for tracking a controller, wherein the controller comprises an inertial measurement unit (IMU) for generating a first controller information in an interactive system, and a plurality of identification dots are arranged on a surface of the controller, the tracking system comprising:

• an image acquisition module, for obtaining a first image having the controller and at least one of the identification dots;
• a processing unit;
• and
• a storage unit, for storing a program code to instruct the processing unit to perform the following steps:
• determining a second controller information according to the first controller information;
• and
• calibrating the second controller information according to the first image;
• wherein the first controller information is a 3 degrees of freedom (3Dof) information, and the second controller information is a 6Dof information.