Calibrating system, calibrating method and non-transitory computer readable storage medium thereof for calibrating predicted line-of-sight

A calibrating method, comprising the following steps:

• generating an eye position of an eye of a user at each of a plurality of historical time points, and obtaining a reference line-of-sight angle according to the eye position and a target position associated with a target object at each of the historical time points, wherein the eye is a left eye or a right eye of the user, the user is located inside a vehicle, and the target object is located outside the vehicle, by a reference result calculating device;
• performing a filtering process on a plurality of first predicted line-of-sight angles generated by a line-of-sight predicting device at the historical time points, so as to obtain a second predicted line-of-sight angle at each of the historical time points, wherein the first predicted line-of-sight angles are obtained by the line-of-sight predicting device through a coarse prediction based on a plurality of first images associated with the eye, by a filtering processing device;
• obtaining a plurality of offset values according to the second predicted line-of-sight angles and the reference line-of-sight angles at the historical time points, by a compensation value calculating device;
• updating the second predicted line-of-sight angles and the offset values at the historical time points in a configuration file, by a configuration managing device;
• and
• calculating an average offset value of the second predicted line-of-sight angles according to the configuration file, and compensating a future predicted line-of-sight angle according to the average offset value, by a line-of-sight calibrating device.