Patents by Inventor Dijia Wu

Dijia Wu 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: 8571285
    Abstract: Ribs are automatically ordered and paired. After ordering ribs on each side, magnetic and spring functions are used to solve for rib pairing. The magnetic function is used to constrain possible pairs across sides, and the spring function is used to maintain the order on each side while accounting for missing or fused ribs.
    Type: Grant
    Filed: October 17, 2011
    Date of Patent: October 29, 2013
    Assignee: Siemens Aktiengesellschaft
    Inventors: Sowmya Ramakrishnan, Christopher V. Alvino, Dijia Wu, David Liu, Shaohua Kevin Zhou
  • Publication number: 20130077841
    Abstract: A method and system for extracting rib centerlines in a 3D volume, such as a 3D computed tomography (CT) volume, is disclosed. Rib centerline voxels are detected in the 3D volume using a learning based detector. Rib centerlines or the whole rib cage are then extracted by matching a template of rib centerlines for the whole rib cage to the 3D volume based on the detected rib centerline voxels. Each of the extracted rib centerlines are then individually refined using an active contour model.
    Type: Application
    Filed: September 4, 2012
    Publication date: March 28, 2013
    Applicant: Siemens Corporation
    Inventors: Dijia Wu, David Liu, Christian Tietjen, Grzegorz Soza, Shaohua Kevin Zhou, Dorin Comaniciu
  • Publication number: 20130070996
    Abstract: A method and system for up-vector detection for ribs in a 3D medical image volume, such as a computed tomography (CT) volume is disclosed. A rib centerline of at least one rib is extracted in a 3D medical image volume. An up-vector is automatically detected at each of a plurality of centerline points of the rib centerline of the at least one rib. The up-vector at each centerline point can be detected using a trained regression function. Alternatively, the up-vector at each centerline point can be detected by detecting an ellipse shape in a cross-sectional rib image generated at each centerline point.
    Type: Application
    Filed: September 4, 2012
    Publication date: March 21, 2013
    Applicants: Siemens Aktiengesellschaft, Siemens Corporation
    Inventors: David Liu, Hao Xu, Dijia Wu, Christian Tietjen, Grzegorz Soza, Shaohua Kevin Zhou, Dorin Comaniciu
  • Publication number: 20120183193
    Abstract: A method and system for automatic detection and volumetric quantification of bone lesions in 3D medical images, such as 3D computed tomography (CT) volumes, is disclosed. Regions of interest corresponding to bone regions are detected in a 3D medical image. Bone lesions are detected in the regions of interest using a cascade of trained detectors. The cascade of trained detectors automatically detects lesion centers and then estimates lesion size in all three spatial axes. A hierarchical multi-scale approach is used to detect bone lesions using a cascade of detectors on multiple levels of a resolution pyramid of the 3D medical image.
    Type: Application
    Filed: January 3, 2012
    Publication date: July 19, 2012
    Applicants: Siemens Aktiengesellschaft, Siemens Corporation
    Inventors: Michael Wels, Michael Suehling, Shaohua Kevin Zhou, David Liu, Dijia Wu, Christopher V. Alvino, Michael Kelm, Grzegorz Soza, Dorin Comaniciu
  • Publication number: 20120106810
    Abstract: Ribs are automatically ordered and paired. After ordering ribs on each side, magnetic and spring functions are used to solve for rib pairing. The magnetic function is used to constrain possible pairs across sides, and the spring function is used to maintain the order on each side while accounting for missing or fused ribs.
    Type: Application
    Filed: October 17, 2011
    Publication date: May 3, 2012
    Applicant: Siemens Corporation
    Inventors: Sowmya Ramakrishnan, Christopher V. Alvino, Dijia Wu, David Liu, Shaohua Kevin Zhou
  • Publication number: 20120070055
    Abstract: A method and system for automatically detecting liver lesions in medical image data, such as 3D CT images, is disclosed. A liver region is segmented in a 3D image. Liver lesion center candidates are detected in the segmented liver region. Lesion candidates are segmented corresponding to the liver lesion center candidates, and lesions are detected from the segmented lesion candidates using learning based verification.
    Type: Application
    Filed: September 21, 2011
    Publication date: March 22, 2012
    Applicants: Siemens Aktiengesellschaft, Siemens Corporation
    Inventors: David Liu, Dijia Wu, Shaohua Kevin Zhou, Maria Jimena Costa, Michael Suehling, Christian Tietjen
  • Publication number: 20110075920
    Abstract: Described herein is a framework for automatically classifying a structure in digital image data are described herein. In one implementation, a first set of features is extracted from digital image data, and used to learn a discriminative model. The discriminative model may be associated with at least one conditional probability of a class label given an image data observation Based on the conditional probability, at least one likelihood measure of the structure co-occurring with another structure in the same sub-volume of the digital image data is determined. A second set of features may then be extracted from the likelihood measure.
    Type: Application
    Filed: December 8, 2010
    Publication date: March 31, 2011
    Applicant: SIEMENS MEDICAL SOLUTIONS USA, INC.
    Inventors: Dijia Wu, Le Lu, Jinbo Bi, Yoshihisa Shinagawa, Marcos Salganicoff
  • Publication number: 20110064289
    Abstract: Automated and semi-automated systems and methods for detection and classification of structures within 3D lung CT images using voxel-level segmentation and subvolume-level classification.
    Type: Application
    Filed: September 13, 2010
    Publication date: March 17, 2011
    Applicant: Siemens Medical Solutions USA, Inc.
    Inventors: Jinbo Bi, Le Lu, Marcos Salganicoff, Yoshihisa Shinagawa, Dijia Wu
  • Publication number: 20070127578
    Abstract: Techniques for low delay and small memory footprint picture buffering are described. For example, an apparatus may include a media processing node to receive a decoded video frame. The media processing node may selectively output and selectively buffer the decoded video frame. Other embodiments are described and claimed.
    Type: Application
    Filed: December 2, 2005
    Publication date: June 7, 2007
    Inventors: Dijia Wu, Jia Bao, Shaolin Wu
  • Publication number: 20070126747
    Abstract: An embodiment is an interleaved video frame buffer structure that merges two separate chroma frame buffers into one chroma frame buffer by interleaving the individual chroma frame buffers. The merged chroma buffer, based on improved memory space adjacency versus two separate chroma frame buffers, may reduce the possibility of cache conflicts and improve cache utilization. Other embodiments are described and claimed.
    Type: Application
    Filed: December 2, 2005
    Publication date: June 7, 2007
    Inventors: Dijia Wu, Fan Zhang