Filtering method for surface modeling

摘要

A system for mapping a tissue surface includes a probe for mapping a tissue surface, a localization system to measure a location data point indicative of the probe's location, a memory in which to store the location data point, a servo mechanism to move the probe along at least a portion of the tissue surface, a controller to move the probe to a plurality of locations and to record in the memory a plurality of location data points, and a contact-sensing processor to analyze the plurality of location data points and to identify a subset thereof on the tissue surface. A modeling processor generates a model of the tissue surface using the subset of location data points. The contact-sensing processor utilizes probe velocity, or a rate of change in the distance moved by the probe, to determine contact between the probe and the tissue surface.

主权项

1. A method of generating an anatomical model from a probe moving through a portion of an anatomy, the method comprising:
measuring a data point associated with a probe moving through a portion of the anatomy; determining a velocity of the probe; comparing the velocity of the probe against a preset velocity threshold; storing the measured data point in a memory to create a plurality of stored model data points when the velocity of the probe is below the preset velocity threshold; and generating an anatomical model from the plurality of stored model data points.