Patents by Inventor Krishna Subramanyan

Krishna Subramanyan has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 7991243
    Abstract: A diagnostic imaging system (10) corrects metal artifact streaks (38) emanating from a metal object (36) in a tomographic image (T). A first processor (40) reduces streaks (38) caused by mild artifacts by applying an adaptive filter (82). The filter (82) is perpendicularly oriented toward the center of the metal object (36). The weight of the filter (82) is a function of the local structure tensor and the vector pointing to the metal object (36). If it is determined that the strong artifacts are present in the image, a second processor (48) applies a sinogram completed image algorithm to correct for severe artifacts in the image. The sinogram completed image and adaptively filtered image are fused to a final corrected image. In the fusion process, highly corrupted tomographic regions are replaced by the result of the sinogram completed image and the remainder is replaced by the adaptively filtered image.
    Type: Grant
    Filed: February 1, 2006
    Date of Patent: August 2, 2011
    Assignee: Koninklijke Philips Electronics N.V.
    Inventors: Matthieu Bal, Hasan Celik, Kai Eck, Lothar Spies, Krishna Subramanyan
  • Publication number: 20080152203
    Abstract: A diagnostic imaging system (10) corrects metal artifact streaks (38) emanating from a metal object (36) in a tomographic image (T). A first processor (40) reduces streaks (38) caused by mild artifacts by applying an adaptive filter (82). The filter (82) is perpendicularly oriented toward the center of the metal object (36). The weight of the filter (82) is a function of the local structure tensor and the vector pointing to the metal object (36). If it is determined that the strong artifacts are present in the image, a second processor (48) applies a sinogram completed image algorithm to correct for severe artifacts in the image. The sinogram completed image and adaptively filtered image are fused to a final corrected image. In the fusion process, highly corrupted tomographic regions are replaced by the result of the sinogram completed image and the remainder is replaced by the adaptively filtered image.
    Type: Application
    Filed: February 1, 2006
    Publication date: June 26, 2008
    Applicant: KONINKLIJKE PHILIPS ELECTRONICS N.V.
    Inventors: Matthieu Bal, Hasan Celik, Kai Eck, Lothar Spies, Krishna Subramanyan
  • Publication number: 20060234886
    Abstract: Liquid lamellar cleansing compositions are described that contain synthetic surfactants, hydrophilic emollients and exfoliant particles where 80% or more of the particles have a major axis length of between 100 and 1000 microns. The combination of the mild surfactants, moisturizers, and exfoliants provide the user with simultaneous moisturization and exfoliation in a convenient liquid cleansing product.
    Type: Application
    Filed: July 7, 2006
    Publication date: October 19, 2006
    Applicant: UNILEVER HOME & PERSONAL CARE USA, DIVISION OF CONOPCO, INC.
    Inventors: Michael Massaro, Jessica Goldberg, Krishna Subramanyan, Anthony Johnson, Craig Slavtcheff, Suzanne Gencarelli, Philip Miner
  • Publication number: 20050170979
    Abstract: Liquid lamellar cleansing compositions are described that contain synthetic surfactants, hydrophilic emollients and exfoliant particles where 80% or more of the particles have a major axis length of between 100 and 1000 microns. The combination of the mild surfactants, moisturizers, and exfoliants provide the user with simultaneous moisturization and exfoliation in a convenient liquid cleansing product.
    Type: Application
    Filed: March 28, 2005
    Publication date: August 4, 2005
    Inventors: Michael Massaro, Jessica Goldberg, Krishna Subramanyan, Anthony Johnson, Craig Slavtcheff, Suzanne Gencarelli
  • Patent number: 6782284
    Abstract: An apparatus for measuring parameters preparatory to a stent replacement of an aneurytic blood vessel in a patient (26) includes a computed tomography (CT) scanner (10) that acquires image data (28) corresponding to multiple two-dimensional image slices. A reconstruction processor (32) reconstructs a three-dimensional image representation (34) from the image data (28). A tracking processor (40) produces a tracked vessel (92) including at least a centerline (80) and selected vessel boundaries (86). A user interface (44) displays a rendering (242) of the image representation to an associated user (42), measures selected vascular parameters corresponding to the stent parameters (276), and graphically superimposes the measured parameters on the rendering of the image representation (270, 272).
    Type: Grant
    Filed: November 21, 2001
    Date of Patent: August 24, 2004
    Assignee: Koninklijke Philips Electronics, N.V.
    Inventors: Krishna Subramanyan, Shalabh Chandra, Scott Kenneth Pohlman
  • Patent number: 6728566
    Abstract: Computed tomography (CT) data (28) is collected for a plurality of slices by a CT scanner (10). At least a portion of the CT data is reconstructed (32) to form a volume image (34) defined by a plurality of two-dimensional image slices. At least one starting point is identified (72) within a blood vessel imaged in the three-dimensional image volume (34). The blood vessel is recursively tracked (70) to form a blood vessel representation (92).
    Type: Grant
    Filed: November 21, 2001
    Date of Patent: April 27, 2004
    Assignee: Koninklijke Philips Electronics, N.V.
    Inventors: Krishna Subramanyan, Shalabh Chandra