Patents by Inventor Soon-Wook Chung

Soon-Wook Chung 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: 9489586
    Abstract: Disclosed are an apparatus for recognizing a traffic sign and an operating method thereof. The apparatus for recognizing a traffic sign according to an exemplary embodiment of the present invention includes: an image obtaining unit configured to obtain an image from a vehicle to a predetermined range; a region of interest designating unit configured to recognize a traffic sign within the image, and designate an area including the traffic sign as a region of interest; a valid area extracting unit configured to extract a valid area except for an area of a first color from the region of interest, and calculate valid area data; and a similarity calculating unit configured to calculate similarity of the traffic sign by using the valid area data.
    Type: Grant
    Filed: April 27, 2015
    Date of Patent: November 8, 2016
    Assignee: Hyundai Mobis Co., Ltd.
    Inventor: Soon wook Chung
  • Publication number: 20160117562
    Abstract: Disclosed are an apparatus for recognizing a traffic sign and an operating method thereof. The apparatus for recognizing a traffic sign according to an exemplary embodiment of the present invention includes: an image obtaining unit configured to obtain an image from a vehicle to a predetermined range; a region of interest designating unit configured to recognize a traffic sign within the image, and designate an area including the traffic sign as a region of interest; a valid area extracting unit configured to extract a valid area except for an area of a first color from the region of interest, and calculate valid area data; and a similarity calculating unit configured to calculate similarity of the traffic sign by using the valid area data.
    Type: Application
    Filed: April 27, 2015
    Publication date: April 28, 2016
    Inventor: Soon wook CHUNG
  • Patent number: 8675985
    Abstract: Provided are an apparatus and method for processing an image. The apparatus includes a detector configured to form one group with pieces of pixel information on an edge of a received image, detect line segments, and generate a plurality of curves using the detected line segments, an optimizer configured to apply a weight to a cost function based on the plurality of generated curves according to distance from the center of the image, define a curve having a shorter length than a threshold value as an outlier and a curve having a greater length than the threshold value as an inlier, remove the outlier, and estimate a distortion level parameter, and a corrector configured to correct a position of a pixel with a correction value using the distortion level parameter. Accordingly, it is possible to correct lens distortion of even an image that has not been directly photographed, and to correct images generated by devices equipped with any lens rather than a specific camera or photographing apparatus.
    Type: Grant
    Filed: June 17, 2011
    Date of Patent: March 18, 2014
    Assignee: Postech Academy—Industry Foundation
    Inventors: Woo-Jin Song, Hyun Woong Cho, Moon Kyu Song, Byoung-kwang Kim, Soon-Wook Chung
  • Patent number: 8358835
    Abstract: A method for detecting and correcting a chromatic aberration, and an apparatus and method for processing an image using the same are provided. A chromatic aberration is detected by dividing an edge portion of the image into static areas where a color varies below a reference value and a dynamic area where a color varies above the reference value, calculating a intensity difference value between at least one reference color and a comparative color for each of the static areas and the dynamic area, and determining at least one pixel having a intensity difference value exceeding a range of intensity difference values in the static areas among pixels in the dynamic area, as a chromatic aberration region. The chromatic aberration is corrected by correcting the intensity difference value for the pixels in the chromatic aberration region using a correction value in the intensity difference value range in the static area.
    Type: Grant
    Filed: November 10, 2009
    Date of Patent: January 22, 2013
    Assignee: Postech Academy—Industry Foundation
    Inventors: Woo-Jin Song, Soon-Wook Chung, Byoung-Kwang Kim
  • Publication number: 20100166305
    Abstract: A method for detecting and correcting a chromatic aberration, and an apparatus and method for processing an image using the same are provided. A chromatic aberration is detected by dividing an edge portion of the image into static areas where a color varies below a reference value and a dynamic area where a color varies above the reference value, calculating a intensity difference value between at least one reference color and a comparative color for each of the static areas and the dynamic area, and determining at least one pixel having a intensity difference value exceeding a range of intensity difference values in the static areas among pixels in the dynamic area, as a chromatic aberration region. The chromatic aberration is corrected by correcting the intensity difference value for the pixels in the chromatic aberration region using a correction value in the intensity difference value range in the static area.
    Type: Application
    Filed: November 10, 2009
    Publication date: July 1, 2010
    Applicant: Postech Academy - Industry Foundation
    Inventors: Woo-Jin Song, Soon-Wook Chung, Byoung-Kwang Kim