Patents by Inventor Dong Ki AHN

Dong Ki AHN 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).

  • Dropout correction in ultrasound strain imaging
    Patent number: 8503714
    Abstract: Embodiments for correcting a dropout in a strain image in an ultrasound system are disclosed. In one embodiment, a processing unit sets a first window on each of pre-compression ultrasound frame data and post-compression second ultrasound frame data, move the first window in a predetermined direction and compute a correlation between the pre-compression ultrasound frame data and the post-compression ultrasound frame data within the first window to obtain a displacement corresponding to a value of each pixel of target ultrasound frame data. The processing unit sets one of pixels of the target ultrasound frame data as a reference pixel, sets a second window to encompass predetermined numbers of pixels positioned around the reference pixel, checks whether a displacement computation error corresponding to a dropout occur based on the pixel values within the second window and resets, when the dropout occurs, the value of the reference pixel.
    Type: Grant
    Filed: May 13, 2011
    Date of Patent: August 6, 2013
    Assignee: Medison Co., Ltd.
    Inventors: Sang Shik Park, Dong Kuk Shin, Dong Ki Ahn, Mok Kun Jeong
  • DROPOUT CORRECTION IN ULTRASOUND STRAIN IMAGING
    Publication number: 20120099757
    Abstract: Embodiments for correcting a dropout in a strain image in an ultrasound system are disclosed. In one embodiment, a processing unit sets a first window on each of pre-compression ultrasound frame data and post-compression second ultrasound frame data, move the first window in a predetermined direction and compute a correlation between the pre-compression ultrasound frame data and the post-compression ultrasound frame data within the first window to obtain a displacement corresponding to a value of each pixel of target ultrasound frame data. The processing unit sets one of pixels of the target ultrasound frame data as a reference pixel, sets a second window to encompass predetermined numbers of pixels positioned around the reference pixel, checks whether a displacement computation error corresponding to a dropout occur based on the pixel values within the second window and resets, when the dropout occurs, the value of the reference pixel.
    Type: Application
    Filed: May 13, 2011
    Publication date: April 26, 2012
    Inventors: Sang Shik PARK, Dong Kuk SHIN, Dong Ki AHN, Mok Kun JEONG