Method and apparatus for measuring motion of a subject using a series of partial images from an imaging system

US7805009B2 · kind B2 · utility

Assignee

• Carl Zeiss Meditec AG · DE

Inventors

• Matthew J. Everett · Livermore, US
• Claus Flachenecker · Hayward, US
• Martin Hacker · Jena, DE
• Scott A. Meyer · Rochester, US
• Keith O'Hara · Pleasanton, US
• Rick A. Williams · Orinda, US

Key dates

• Filing date: Mar 24, 2006
• Grant date: Sep 28, 2010
• Expiry date: Jun 29, 2029

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61B3/113
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

A line scan imager is used to determine the motion of a subject. Each line of image data from the line scan imager is compared with a reference image. The location of a matching line in the reference image reveals the displacement of the subject. The current subject displacement can be determined based on each line of image data. The resulting displacement information can be used to correctly place other optical beams on the subject. The method can be applied to tracking the human eye to facilitate measurement, imaging, or treatment with a beam of optical radiation.