Anatomical model displaying

A method comprising:

• receiving a signal indicative of a position of a catheter in a heart cavity of a patient;
• determining a geometric characteristic of a three-dimensional representation of the heart cavity;
• and
• determining a display view of the three-dimensional representation based, at least in part, on (i) the position of the catheter in the heart cavity, (ii) one or more previous positions of the catheter in the heart cavity, and (iii) the determined geometric characteristic of the three-dimensional model,
• wherein determining the display view includes—
• processing the received signal such that a transition from a previous display view to the determined display view is smooth and is perceived as continuous motion of the three-dimensional representation, and/or
• processing the display view such that the determined display view is based on one or more previous display views.

A method comprising:

• receiving, at a processing unit external to a patient, a signal indicative of a position of a catheter in a heart cavity of the patient;
• determining, at the processing unit, at least one geometric characteristic of a three-dimensional representation of the heart cavity, wherein determining the at least one geometric characteristic includes calculating, independent of an orientation of the catheter, a surface-normal direction of the three-dimensional representation in an area of the heart cavity local to the position of the catheter;
• determining, at the processing unit, a display view of the three-dimensional representation of the heart cavity based at least in part on the position of the catheter in the heart cavity, on one or more previous positions of the catheter in the heart cavity, and on the geometric characteristic of the three-dimensional representation;
• and
• transmitting, from the processing unit to a graphical user interface, the display view of the three-dimensional representation of the heart cavity.