Method of finding a set of corresponding points in images to be registered, image registration method, medical image registration system and software program product

US12159421B2 · kind B2 · utility

Assignee

• OLYMPUS CORPORATION · JP

Inventors

• Per SUPPA · Hamburg, DE
• Lorena KRAMES · Koblenz, DE

Key dates

• Filing date: Sep 8, 2022
• Grant date: Dec 3, 2024
• Expiry date: Aug 1, 2043

Classification

• Technology area (CPC H): Electricity
• CPC primary: H04N5/77
• WIPO field: Audio-visual technology
• WIPO sector: Electrical engineering

Abstract

A method of finding a set of corresponding points in images to be registered. According to the method, an input unit of the system receives a first user input, indicative of a reference point in an intraoperative image. A processing unit sets a reference area surrounding the reference point and converts the image data points in the reference area to a intraoperative point cloud. The input unit receives a second user input, indicative of a candidate point in a preoperative image. The processing unit sets a search area surrounding the reference point and converts the image data points in the reference area to a preoperative point cloud. By comparing geometric feature descriptors of the image data points, the processing unit finds a target point in the preoperative image corresponding to the reference point and defines the points as set of corresponding points.