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VR/AR/XR
Creating a topological map for localization in augmented or virtual reality systems
United States US20150356782A1, Granted Feb 2, 2021
An augmented reality display system comprises a passable world model data comprises a set of map points corresponding to one or more objects of the real world. The augmented reality system also comprises a processor to communicate with one or more individual augmented reality display systems to pass a portion of the passable world model data to the one or more individual augmented reality display systems, wherein the piece of the passable world model data is passed based at least in part on respective locations corresponding to the one or more individual augmented reality display systems.
Using a map of the world for augmented or virtual reality systems
United States US10115232B2, Granted Oct 30, 2018
An augmented reality display system comprises a passable world model data comprises a set of map points corresponding to one or more objects of the real world. The augmented reality system also comprises a processor to communicate with one or more individual augmented reality display systems to pass a portion of the passable world model data to the one or more individual augmented reality display systems, wherein the piece of the passable world model data is passed based at least in part on respective locations corresponding to the one or more individual augmented reality display systems.
Display systems and methods for clipping content to increase viewing comfort
United States US10878620B2, Granted Dec 29, 2020
Augmented and virtual reality display systems increase viewer comfort by reducing viewer exposure to virtual content that causes undesirable accommodation-vergence mismatches (AVM). The display systems limit displaying content that exceeds an accommodation-vergence mismatch threshold, which may define a volume around the viewer. The volume may be subdivided into two or more zones, including an innermost loss-of-fusion zone (LoF) in which no content is displayed, and one or more outer AVM zones in which the displaying of content may be stopped, or clipped, under certain conditions. For example, content may be clipped if the viewer is verging within an AVM zone and if the content is displayed within the AVM zone for more than a threshold duration. A further possible condition for clipping content is that the user is verging on that content. In addition, the boundaries of the AVM zone and/or the acceptable amount of time that the content is displayed may vary depending upon the type of content being displayed, e.g., whether the content is user-locked content or in-world content.
Technique for more efficiently displaying text in virtual image generation system
United States 9,978,182, Granted May 22, 2018
A virtual image generation system and method of operating same is provided. An end user is allowed to visualize the object of interest in a three-dimensional scene. A text region is spatially associated with the object of interest. A textual message that identifies at least one characteristic of the object of interest is generated. A textual message is streamed within the text region.
Systems and methods for augmented and virtual reality
Application US20150302652A1
An augmented reality display system comprises a passable world model data comprises a set of map points corresponding to one or more objects of the real world. The augmented reality system also comprises a processor to communicate with one or more individual augmented reality display systems to pass a portion of the passable world model data to the one or more individual augmented reality display systems, wherein the piece of the passable world model data is passed based at least in part on respective locations corresponding to the one or more individual augmented reality display systems.
Finding New Points By Render Rather Than Search In Augmented or Virtual Reality Systems
United States US10109108B2, Issued October 23 2018
A method of displaying augmented reality comprises capturing a set of map points pertaining to the real world, wherein the set of map points are captured through a plurality of augmented reality systems, determining a position of a plurality of keyframes that captured the set of map points, and determining a set of new map points based at least in part on the captured set of map points and the determined position of the plurality of keyframes.
Image Guided Surgery
Computer-assisted knee replacement apparatus
Europe EP1697874B1, Issued November 23, 2011
A computer assisted knee replacement apparatus and method comprises a total knee replacement application for assisting, guiding, and planning a total knee replacement procedure (40, 12, 22, 28, 18 and 16). The apparatus and method cooperates with a tracking system to determine implant sizing and location. The apparatus and method also cooperates with the tracking system to determine implant size and location. The apparatus and method also cooperates with the tracking system to determine required tibial and femoral preparation corresponding to the implant size and location and provides real-time monitoring of the tibial and femoral surface preparation procedures.
Interactive computer-assisted surgery system and method
United States 7,813,784, Issued October 12, 2010
A system and method for providing computer assistance for performing a medical procedure provides a graphical user interface to guide and/or assist a user, for example a surgeon, performing the medical procedure, whether surgical or non-surgical. The computer-assisted system comprises a software application that may be used for a medical procedure.
Computer-assisted knee replacement apparatus and method
United States 20050267353, Filed December 1, 2005
A computer-assisted knee replacement apparatus and method comprises a total knee replacement application for assisting, guiding, and planning a total knee replacement procedure. The apparatus and method cooperates with a tracking system to determine implant sizing and location. The apparatus and method also cooperates with the tracking system to determine required tibial and femoral preparation corresponding to the implant size and location and provides real-time monitoring of the tibial and femoral surface preparation procedures.
System and method for providing computer assistance with spinal fixation procedures
United States 20050267354, Filed December 1, 2005
A system and method for providing computer assistance for performing a medical procedure, for example spinal fixation, provides a graphical user interface to guide and/or assist a user, for example a surgeon, performing the medical procedure, whether surgical or non-surgical. The computer-assisted system comprises a software application, for example a spinal fixation application, that may be used for a medical procedure, for example spine linking, etc.
Computer-assisted external fixation apparatus and method
United States 20050267722, Filed December 1, 2005
A computer-assisted external fixation apparatus and method comprises an external fixation application for assisting, guiding, and planning an external fixation procedure. The external fixation application cooperates with a tracking system to acquire kinematic data corresponding to a selected joint during manipulation of the selected joint and/or acquire image data of patient anatomy and determine a kinematic parameter for the selected joint using the kinematic and/or image data, such as an axis of rotation or plane of movement. The external fixation application may then be used with the tracking system to provide real-time alignment information for alignment of an external fixator based on the information associated with the determined kinematic parameter.
Method and apparatus for computer assistance with total hip replacement procedure
United States 20050281465, Filed December 22, 2005
Hip replacement surgery involves replacing the head and neck of the femur with an artificial component having a ball-shaped head and neck similar to that of a replaced femoral head and neck and inserting a cup-shaped component into the acetabulum to act as a liner to receive the ball of the femoral component. During this procedure, a surgeon encounters or has to overcome several problems. These problems include establishing the correct inclination, version and medialization for the acetabular component of the artificial hip; the correct version or angle of the femoral component; and maintaining correct leg length.
Interactive computer-assisted surgery system and method
United States 20060058616, Issued March 16, 2006
A system and method for providing computer assistance for performing a medical procedure provides a graphical user interface to guide and/or assist a user, for example a surgeon, performing the medical procedure, whether surgical or non-surgical. The computer-assisted system comprises a software application that may be used for a medical procedure.
Haptic guidance system and method
United States 20060142657, Filed June 29, 2006
A surgical apparatus includes a surgical device, configured to be manipulated by a user to perform a procedure on a patient, and a computer system. The computer system is programmed to implement control parameters for controlling the surgical device to provide at least one of haptic guidance to the user and a limit on user manipulation of the surgical device, based on a relationship between an anatomy of the patient and at least one of a position, an orientation, a velocity, and an acceleration of a portion of the surgical device, and to adjust the control parameters in response to movement of the anatomy during the procedure.
Method and apparatus for computer assistance with intramedullary nail procedure
United States 20060173293, Filed August 3, 2006
A specially-programmed, computer-assisted surgery system is used to reduce the number of fluoroscopic images required to be taken during the course of a intramedullary nail procedure, eliminates the need for a Steinman pin, and assists the surgeon in properly aligning and securing the nail during insertion.
Method and apparatus for computer assistance with intramedullary nail procedure
United States 20060241416, Filed October 26, 2006
A specially-programmed, computer-assisted surgery system is used to reduce the number of fluoroscopic images required to be taken during the course of a intramedullary nail procedure, eliminates the need for a Steinman pin, and assists the surgeon in properly aligning and securing the nail during insertion.
Computer-assisted knee replacement apparatus and method
United States 20070038223, Filed February 15, 2007
A computer-assisted knee replacement apparatus and method comprises a knee replacement application for assisting, guiding, and planning a unicondylar knee replacement procedure. The apparatus and method cooperates with a tracking system to determine implant sizing and location. The apparatus and method also cooperates with the tracking system to determine required tibial and femoral preparation corresponding to the implant size and location and provides real-time monitoring of the tibial and femoral surface preparation procedures.
