Patent ID: 11900541
Assignee: EDDA TECHNOLOGY, INC.
Field: Medical technology (Instruments)
Classification: CPC G  A | IPC A  G

Claim 0:
1. A method implemented on at least one processor, a memory, and a communication platform for estimating a three-dimensional (3D) coordinate of a 3D virtual model, comprising:
accessing a 3D virtual model constructed for an organ of a patient based on a plurality of images of the organ prior to a medical procedure;
obtaining a first pair of corresponding feature points, with a first two-dimensional (2D) feature point on the organ observed in a 2D image acquired during the medical procedure and a first corresponding 3D feature point from the 3D virtual model;
obtaining a second pair of corresponding feature points, with a second 2D feature point on the organ observed in the 2D image and a second corresponding 3D feature point from the 3D virtual model, wherein the depths of the first and the second 3D feature points are substantially the same; and
automatically determining a first 3D coordinate of the first 3D feature point and a second 3D coordinate of the second 3D feature point based on the first and the second pairs of corresponding feature points so that a first distance between the determined first 3D coordinate and the determined second 3D coordinate equals to a second distance between a first actual 3D coordinate of the first 3D feature point and a second actual 3D coordinate of the second 3D feature point in the 3D virtual model.