Patents by Inventor Prarthana Shrestha

Prarthana Shrestha 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).

  • Publication number: 20230104460
    Abstract: A method (and system) is provided obtaining an adapted calibration transformation for whole slide imaging, wherein the adapted calibration transformation is for outputting the color of an empty area of the slide in a whole slide image, WSI, as a desired color. The method comprises first receiving a color target WSI in a device-dependent color space, wherein the color target WSI is a WSI of a color target from a scanner represented in the device-dependent color space. The color target contains at least a white patch and three (near) primary color patches. A calibration transformation is obtained for transforming the device-dependent color space to a device-independent color space. A chromatic adaptation transformation is derived using the color of the white patch in the device-dependent color space, the color of the empty (glass) area in the device-independent color space and the desired empty (glass) color in the target color space.
    Type: Application
    Filed: December 24, 2020
    Publication date: April 6, 2023
    Inventors: PRARTHANA SHRESTHA, JELTE PETER VINK, MAARTEN VAN LIEROP, GERARDUS JOHANNES WILHELMUS VAN DEN BRAAK, MATHIJS REM, JEREON DE KLEIJN
  • Patent number: 11002667
    Abstract: The present invention relates to digital pathology. In order to improve uniformity at microscopic level and to enhance stability in time for color calibration, a calibration slide (10) is provided for a digital pathology scanning microscope. The calibration slide comprises a substrate (12) and a pixel layout (14) comprising a plurality of spaced apart metal nanostructures (16) arranged on a surface (18) of the substrate. The substrate is optically transparent. The metal nanostructures are arranged to produce plasmon resonances for generating a color image under a bright-field illumination. The color image comprises a plurality of calibration color values that are provided for calibrating a digital pathology imaging system.
    Type: Grant
    Filed: December 23, 2016
    Date of Patent: May 11, 2021
    Assignee: KONINKLIJKE PHILIPS N.V.
    Inventors: Marius Iosif Boamfa, Susanne Maaike Valster, Prarthana Shrestha
  • Publication number: 20200264096
    Abstract: The present invention relates to digital pathology. In order to improve uniformity at microscopic level and to enhance stability in time for color calibration, a calibration slide (10) is provided for a digital pathology scanning microscope. The calibration slide comprises a substrate (12) and a pixel layout (14) comprising a plurality of spaced apart metal nanostructures (16) arranged on a surface (18) of the substrate. The substrate is optically transparent. The metal nanostructures are arranged to produce plasmon resonances for generating a color image under a bright-field illumination. The color image comprises a plurality of calibration color values that are provided for calibrating a digital pathology imaging system.
    Type: Application
    Filed: December 23, 2016
    Publication date: August 20, 2020
    Inventors: MARIUS IOSIF BOAMFA, SUSANNE MAAIKE VALSTER, PRARTHANA SHRESTHA
  • Publication number: 20110075924
    Abstract: To adjust colors in an input image (II) to colors of a reference image (RI), matching reference points (RP) are provided in the input image (II) and the reference image (RI), dominant colors of the matching reference points (RP) are determined (10, 20), and the colors in the input image (II) are transformed (30, 40) based on the dominant colors of the matching reference C points to obtain an output image (OI).
    Type: Application
    Filed: June 16, 2009
    Publication date: March 31, 2011
    Applicant: KONINKLIJKE PHILIPS ELECTRONICS N.V.
    Inventors: Prarthana Shrestha, Dragan Sekulovski, Mauro Barbieri, Johannes Weda, Ramon Antoine Wiro Clout
  • Publication number: 20100185628
    Abstract: A plurality of summaries of a multimedia file are automatically generated. A first summary of a multimedia file is generated (step 308). At least one second summary of the multimedia file is then generated (step 314). The at least one second summary includes content excluded from the first summary. The content of the at least one second summary is selected such that it is semantically different to the content of the first summary (step 312).
    Type: Application
    Filed: June 9, 2008
    Publication date: July 22, 2010
    Applicant: KONINKLIJKE PHILIPS ELECTRONICS N.V.
    Inventors: Johannes Weda, Marco Emanuele Campanella, Mauro Barbieri, Prarthana Shrestha
  • Publication number: 20100111498
    Abstract: Method of creating a summary (110) of a content item (100) that comprises a plurality of segments (101-1 . . . 101-7), each having a respective segment importance score. The method comprises deriving a cut point importance score for each one of N a plurality of potential cut points (102-1 . . . 102-8), each potential cut point being a boundary between two respective segments, the cut point importance score of a particular potential cut point being based on content characteristics of the two segments aligned to said potential cut point; and creating a summary (110) comprising a subset of the plurality of segments of the content item selected based on a combination of the segment importance scores and the cut point importance scores.
    Type: Application
    Filed: September 26, 2007
    Publication date: May 6, 2010
    Applicant: KONINKLIJKE PHILIPS ELECTRONICS N.V.
    Inventors: Johannes Weda, Mauro Barbieri, Marco Emanuele Campanella, Prarthana Shrestha
  • Publication number: 20100007726
    Abstract: Photo or video content of a person is acquired (401). A dimension of at least one iris of a person such as radius of the iris is measured (405, 411). A dimension of the face of the person, such as width of the face, is measured. The person is then classified (413) as an adult or child on the basis of a ratio of the dimension of the face and the dimension of the iris.
    Type: Application
    Filed: October 17, 2007
    Publication date: January 14, 2010
    Applicant: KONINKLIJKE PHILIPS ELECTRONICS N.V.
    Inventors: Mauro Barbieri, Johannes Weda, Lalitha Agnihotri, Marco Emanuele Campanella, Prarthana Shrestha