Patents by Inventor Hyun-mook Oh

Hyun-mook Oh 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: 9135679
    Abstract: Provided is a method and apparatus for restoring color of an input image. The method includes: separating multiple band information of a near infrared (NIR) channel from information of the input image by using a correlation between a color channel and the NIR channel in the input image; obtaining estimated invisible light band information of the NIR channel from the multiple band information of the NIR channel and estimated multiple band information of the NIR channel which is estimated from the color channel; estimating invisible light band information of the color channel based on the estimated invisible light band information of the NIR channel; and restoring a visible light band image of the color channel by removing the estimated invisible light band information of the color channel from multiple band information of the color channel included in the information of the input image.
    Type: Grant
    Filed: July 23, 2013
    Date of Patent: September 15, 2015
    Assignees: INDUSTRY-ACADEMIC COOPERATION FOUNDATION, YONSEI UNIVERSITY, Hanwha Techwin Co., Ltd.
    Inventors: Eun-Cheol Choi, Moon-gi Kang, Hyun-mook Oh, Chul-Hee Park
  • Publication number: 20140169671
    Abstract: Provided is a method and apparatus for restoring color of an input image. The method includes: separating multiple band information of a near infrared (NIR) channel from information of the input image by using a correlation between a color channel and the NIR channel in the input image; obtaining estimated invisible light band information of the NIR channel from the multiple band information of the NIR channel and estimated multiple band information of the NIR channel which is estimated from the color channel; estimating invisible light band information of the color channel based on the estimated invisible light band information of the NIR channel; and restoring a visible light band image of the color channel by removing the estimated invisible light band information of the color channel from multiple band information of the color channel included in the information of the input image.
    Type: Application
    Filed: July 23, 2013
    Publication date: June 19, 2014
    Applicants: INDUSTRY-ACADEMIC COOPERATION FOUNDATION, YONSEI UNIVERSITY, SAMSUNG TECHWIN CO., LTD.
    Inventors: Eun-Cheol CHOI, Moon-gi KANG, Hyun-mook OH, Chul-Hee PARK
  • Patent number: 8416316
    Abstract: A method and apparatus for adjusting a white balance in a digital imaging device. The method including the steps of: analyzing a histogram of an image to which a white balance algorithm is to be applied; classifying the image, to which the white balance algorithm is to be applied, according to color distribution determination criteria; and the white balance algorithm is applied to the image in a customized manner based on results of the classification based on color distributions. The apparatus includes an image sensor unit for photographing a subject and for creating an original image; and an image processing unit for finding an achromatic color region through estimation of a color temperature of the original image, for extracting a white point of the achromatic color region, and for adjusting a white balance of the original image.
    Type: Grant
    Filed: February 11, 2009
    Date of Patent: April 9, 2013
    Assignees: Samsung Electronics Co., Ltd., Industry-Academic Cooperation Foundation Yonsei University
    Inventors: Min-Kyu Park, Hyun-Hee Park, Sung-Dae Cho, Moon-Gi Kang, Chang-Won Kim, Hyun-Mook Oh
  • Patent number: 8406557
    Abstract: A lens shading correction method and apparatus are provided for removing vignetting occurring in digital images due to lens shading. A white image captured by an image pickup device and an image pickup unit is separated into reference white images corresponding to color channels. A vignetting center having a maximum light intensity is estimated in each of the reference white images. Multiple reference segments on each of the reference white images are defined. A lens shading correction value corresponding to each pixel constituting the reference segments are calculated using a corresponding light intensity. A lens shading correction function corresponding to each reference segment is derived using a corresponding lens shading correction value. Vignetting of a general image received in a general image processing mode is removed, using the derived multiple lens shading correction functions.
    Type: Grant
    Filed: July 8, 2010
    Date of Patent: March 26, 2013
    Assignees: Samsung Electronics Co., Ltd, Industry-Academic Cooperation Foundation Yonsei University
    Inventors: Min-Kyu Park, Hee-Chan Park, Jin-Ho Kim, Ji-Hye Kim, Sung-Dae Cho, Moon-Gi Kang, Chang-Won Kim, Hyun-Mook Oh
  • Patent number: 8395679
    Abstract: An apparatus and method for suppressing color rolling are provided. The apparatus includes a digital signal processor which detects first motion information on a current frame and second motion information on at least one of a plurality of neighboring frames, calculates a gain based on the first and second motion information, and applies the gain to at least one channel of the current frame.
    Type: Grant
    Filed: July 15, 2010
    Date of Patent: March 12, 2013
    Assignees: Samsung Techwin Co., Ltd., Industry-Academic Cooperation Foundation, Yonsei University
    Inventors: Bong-hyup Kang, Moon-gi Kang, Hyun-mook Oh, Du-sic Yoo, Joon-young Chang
  • Publication number: 20110096237
    Abstract: An apparatus and method for suppressing color rolling are provided. The apparatus includes a digital signal processor which detects first motion information on a current frame and second motion information on at least one of a plurality of neighboring frames, calculates a gain based on the first and second motion information, and applies the gain to at least one channel of the current frame.
    Type: Application
    Filed: July 15, 2010
    Publication date: April 28, 2011
    Applicants: SAMSUNG TECHWIN CO., LTD., Industry-Academic Cooperation Foundation, Yonsei University
    Inventors: Bong-hyup KANG, Moon-gi KANG, Hyun-mook OH, Du-sic YOO, Joon-young CHANG
  • Publication number: 20110007969
    Abstract: A lens shading correction method and apparatus are provided for removing vignetting occurring in digital images due to lens shading. A white image captured by an image pickup device and an image pickup unit is separated into reference white images corresponding to color channels. A vignetting center having a maximum light intensity is estimated in each of the reference white images. Multiple reference segments on each of the reference white images are defined. A lens shading correction value corresponding to each pixel constituting the reference segments are calculated using a corresponding light intensity. A lens shading correction function corresponding to each reference segment is derived using a corresponding lens shading correction value. Vignetting of a general image received in a general image processing mode is removed, using the derived multiple lens shading correction functions.
    Type: Application
    Filed: July 8, 2010
    Publication date: January 13, 2011
    Applicants: Samsung Electronics Co., Ltd., Industry-Academic Cooperation Foundation Yonsei University
    Inventors: Min-Kyu PARK, Hee-Chan Park, Jin-Ho Kim, Ji-Hye Kim, Sung-Dae Cho, Moon-Gi Kang, Chang-Won Kim, Hyun-Mook Oh
  • Publication number: 20090207274
    Abstract: A method and apparatus for adjusting a white balance in a digital imaging device. The method including the steps of: analyzing a histogram of an image to which a white balance algorithm is to be applied; classifying the image, to which the white balance algorithm is to be applied, according to color distribution determination criteria; and the white balance algorithm is applied to the image in a customized manner based on results of the classification based on color distributions. The apparatus includes an image sensor unit for photographing a subject and for creating an original image; and an image processing unit for finding an achromatic color region through estimation of a color temperature of the original image, for extracting a white point of the achromatic color region, and for adjusting a white balance of the original image.
    Type: Application
    Filed: February 11, 2009
    Publication date: August 20, 2009
    Inventors: Min-Kyu Park, Hyun-Hee Park, Sung-Dae Cho, Moon-Gi Kang, Chang-Won Kim, Hyun-Mook Oh