05823192 is referenced by 192 patents and cites 9 patents.

A patient is automatically accurately positioned relative to a fixed refece of a treatment/diagnostic device by an optical system which operates a patient positioning assembly to bring fiducials or skin markers on the patient into coincidence with impingement points of laser beams projected in a fixed pattern relative to the device. Cameras record images of the fiducials and laser impingement points from which alignment error and velocity error in pixel space are determined. The velocity error in pixel space is converted to a velocity error in room space by the inverse of an Image Jacobian. The Image Jacobian is initially derived using rough values for system parameters and is continuously updated and refined using the calculated errors in pixel space derived from the camera images and errors in room space derived from position encoders on the treatment/diagnostic device.

Title
Apparatus for automatically positioning a patient for treatment/diagnoses
Application Number
8/690521
Publication Number
5823192
Application Date
July 31, 1996
Publication Date
October 20, 1998
Inventor
Takeo Kanade
Pittsburgh
PA, US
Charalambos N Athanassiou
Pittsburgh
PA, US
Karun B Shimoga
Pittsburgh
PA, US
Joel Greenberger
Sewickley
PA, US
Andre M Kalend
Monroeville
PA, US
Agent
Richard V Eckert Seamans Cherin & Mellott Westerhoff
Assignee
University of Pittsburgh of the Commonwealth System of Higher Education
PA, US
IPC
A61G 15/00
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