The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 15, 2020
Filed:
Jul. 06, 2017
Respiratory Innovations Pty Ltd, Eveleigh, New South Wales, AU;
Ricky O'Brien, Five Dock, AU;
Kuldeep Makhija, Blacktown, AU;
Daniel Nicholas Zafir, Newtown, AU;
Thomas Christopher Wolfgang Landgrebe, Sydney, AU;
Peter Horsley, Wahroonga, AU;
Sean Pollock, Redfern, AU;
Paul J. Keall, Greenwich, AU;
Opus Medical Pty Ltd, Eveleigh, NSW, unknown;
Abstract
A method of real-time markerless measurement and calibration of a patient positioning system includes computing a three dimensional point cloud representation of a patient by using a camera to obtain depth points of the patient, where the z-direction corresponds to a direction along the focal length of the camera, demanding a z-limit that corresponds to a lower (z-min) and an upper (z-max) specification, computing a point cloud covariance and a point cloud mean for an optimized principle components analysis to compute a torso topography of the patient, determining a center point of the point cloud as an anchor measurement region and using the camera to determine a distance to the patient to establish an angle between a patient torso and a vector that is perpendicular to the camera, averaging the depth measurements in reference regions and compensating for parallax error in real-time during a calibration measurement or radiotherapy treatment plan.