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Patent Issued for Intrinsic Feature-Based Pose Measurement for Imaging Motion Compensation

September 3, 2014



By a News Reporter-Staff News Editor at Journal of Engineering -- A patent by the inventors Baba, Justin S. (Knoxville, TN); Goddard, Jr., James Samuel (Knoxville, TN), filed on May 16, 2011, was published online on August 19, 2014, according to news reporting originating from Alexandria, Virginia, by VerticalNews correspondents.

Patent number 8810640 is assigned to UT-Battelle, LLC (Oak Ridge, TN).

The following quote was obtained by the news editors from the background information supplied by the inventors: "Several methods for high-resolution single photon emission computed tomography (SPECT) instrumentation to image awake, un-anesthetized small animals are currently available. As a result, functional imaging studies can now be performed on animals without anesthetics or significant restraints which could alter the results. The technology can be extended directly to clinical applications on human patients unable to remain still (e.g. Parkinson's patients, Alzheimer's patients, small children, etc.) during a scan.

"In general, such methods rely on an optical measurement and motion tracking system that provides 3D position and orientation (pose) of a subject during the SPECT imaging scan. Typically, most methods rely on the use of external markers for motion tracking and pose calculation. While this approach has been proven to be accurate, the additional handling required to attach the markers is undesirable, particularly in animals. Further, markers and other similar devices can also be uncomfortable and can lead to additional motion of a subject with possible complete dislodgement of a marker/markers during the course of the scan."

In addition to the background information obtained for this patent, VerticalNews journalists also obtained the inventors' summary information for this patent: "Embodiments of the invention concern systems and method generating pose information for motion correction of images. In a first embodiment of the invention, a method for generating pose information for motion correction images is provided. The method includes obtaining a first plurality of images of a region of interest (ROI) to be imaged and associated with a first time, the first plurality of images associated with different positions and orientations with respect to the ROI. The method also includes processing the first plurality of images. The processing includes defining an active region in the one of the first plurality of images and selecting intrinsic features in the one of the first plurality of images based on the active region. The processing also includes identifying a portion of the intrinsic features temporally and spatially matching intrinsic features in a corresponding one of a second plurality of images of the ROI associated with a second time prior to the first time. Finally, the method includes computing pose information for the first plurality of images based on the portion of the intrinsic features.

"In a second embodiment of the invention, a system for generating pose information for motion correction of images is provided. The system includes a processor. The system also includes a module configured for causing the processor to obtain a first plurality of images of a ROI to be imaged, where the first plurality of images are associated with a first time and different positions and orientations with respect to the ROI. The system further includes additional modules for causing the processor to process each one of the first plurality of images. The processing includes defining an active region in the plurality of images and selecting intrinsic features in the first plurality of images based on the active region. The processing also includes identifying a portion of the intrinsic features temporally and spatially matching intrinsic features in a corresponding one of a second plurality of images of the ROI associated with a second time prior to the first time. The system further includes another module for causing the processor to compute pose information for the first plurality of images based on the portion of the intrinsic features.

"In a third embodiment of the invention, a computer-readable medium is provided, storing a computer program having instructions for generating pose information for motion correction of images. The instructions include obtaining a first plurality of images of a ROI to be imaged, where the first plurality of images are associated with a first time and with different positions and orientations with respect to the ROI. The instructions further include processing each one of the first plurality of images. The processing includes defining an active region in the one of the first plurality of images and selecting intrinsic features in the one of the first plurality of images based on the active region. The processing also includes identifying a portion of the intrinsic features temporally and spatially matching intrinsic features in a corresponding one of a second plurality of images of the ROI associated with a second time prior to the first time and computing 3D coordinates for the portion of the intrinsic features. The instructions additionally include computing pose information for the first plurality of images based on the 3D coordinates."

URL and more information on this patent, see: Baba, Justin S.; Goddard, Jr., James Samuel. Intrinsic Feature-Based Pose Measurement for Imaging Motion Compensation. U.S. Patent Number 8810640, filed May 16, 2011, and published online on August 19, 2014. Patent URL: http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PALL&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.htm&r=1&f=G&l=50&s1=8810640.PN.&OS=PN/8810640RS=PN/8810640

Keywords for this news article include: UT-Battelle LLC.

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Source: Journal of Engineering


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