14. The method of claim 13 , wherein the step of tracking the catheter electrode model in a second frame of the fluoroscopic image sequence comprises: tracking the catheter electrode model for the first part in the second frame based on the electrode position candidates detected using the at least one trained electrode detector; sequentially tracking the catheter electrode model for each remaining part in order from the first part to the last part in the second frame based on the tracked catheter electrode model for the previous part; and detecting a first combined catheter electrode model of all of the parts in the second frame based on the sequential tracking of the catheter electrode models from the first part to the last part.
15. The method of claim 14 , wherein the step of sequentially tracking the catheter electrode model for each remaining part in order from the first part to the last part in the second frame based on the tracked catheter electrode model for the previous part comprises: generating catheter electrode model candidates for a current part in the second frame based on a position of a last electrode in a catheter electrode model candidate selected for the previous part; and selecting one of the generated catheter electrode model candidates for the current part in the second frame based on probability scores of the catheter electrode model candidates for the current part.