Patents by Inventor Do-Sik Hwang

Do-Sik Hwang 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: 20210357627
    Abstract: A makeup evaluation system can include a mobile terminal for photographing an image and transmitting the photographed image to a makeup server; and a makeup server including a make-up DB management unit for storing at least one algorithm used for make-up evaluation, a region detection unit for detecting a face region in the photographed image, a makeup analysis unit for evaluating makeup by applying the stored algorithm to the detected face region, and a wireless communication unit for transmitting an evaluation result signal including information on the result of evaluating the makeup to the mobile terminal, in which the mobile terminal displays the evaluation result according to a received evaluation result signal, and the makeup server evaluates makeup by applying different algorithms for each face region.
    Type: Application
    Filed: July 29, 2021
    Publication date: November 18, 2021
    Applicant: LG HOUSEHOLD & HEALTH CARE LTD.
    Inventors: Sang E KIM, Do Hyuk KWON, Do Sik HWANG, Tae Seong KIM, Doo Hyun PARK, Ki Hun BANG, Tae Joon EO, Yo Han JUN, Se Won HWANG
  • Patent number: 11113511
    Abstract: A makeup evaluation system according to an embodiment of the present invention includes a mobile terminal for photographing a facial image and transmitting the photographed facial image to a makeup server, and the makeup server for storing makeup score data and, when receiving the facial image from the mobile terminal, detecting at least one face region in the facial image, calculating a makeup score for each of the detected face regions on the basis of the makeup score data, and transmitting the calculated makeup score to the mobile terminal.
    Type: Grant
    Filed: February 1, 2018
    Date of Patent: September 7, 2021
    Assignee: LG HOUSEHOLD & HEALTH CARE LTD.
    Inventors: Sang E Kim, Do Hyuk Kwon, Do Sik Hwang, Tae Seong Kim, Doo Hyun Park, Ki Hun Bang, Tae Joon Eo, Yo Han Jun, Se Won Hwang
  • Publication number: 20210158154
    Abstract: A neural waveform distinguishment apparatus includes: a neural waveform obtainment unit that obtains multiple neural waveforms in a pre-designated manner from neural signals sensed by way of at least one electrode; a preprocessing unit that obtains multiple gradient waveforms by calculating pointwise slopes in each of the neural waveforms; a feature extraction unit comprising an encoder ensemble composed of multiple encoders, which have a pattern estimation method learned beforehand and include different numbers of hidden layers, where the feature extraction unit obtains multiple codes as multiple features extracted by the encoders respectively from the gradient waveforms and concatenates the codes extracted by the encoders respectively to extract a feature ensemble for each of the gradient waveforms; and a clustering unit that distinguishes the neural waveforms corresponding respectively to the gradient waveforms by clustering the feature ensembles extracted respectively in correspondence to the gradient wav
    Type: Application
    Filed: November 19, 2020
    Publication date: May 27, 2021
    Inventors: Do Sik HWANG, Jun Sik EOM, Han Byol JANG, Se Won KIM, In Yong PARK
  • Publication number: 20190362134
    Abstract: A makeup evaluation system according to an embodiment of the present invention includes a mobile terminal for photographing a facial image and transmitting the photographed facial image to a makeup server, and the makeup server for storing makeup score data and, when receiving the facial image from the mobile terminal, detecting at least one face region in the facial image, calculating a makeup score for each of the detected face regions on the basis of the makeup score data, and transmitting the calculated makeup score to the mobile terminal.
    Type: Application
    Filed: February 1, 2018
    Publication date: November 28, 2019
    Applicant: LG HOUSEHOLD & HEALTH CARE LTD.
    Inventors: Sang E KIM, Do Hyuk KWON, Do Sik HWANG, Tae Seong KIM, Doo Hyun PARK, Ki Hun BANG, Tae Joon EO, Yo Han JUN, Se Won HWANG
  • Patent number: 10168405
    Abstract: Provided are a method and apparatus for processing a magnetic resonance (MR) image of an object including first and second materials on a magnetic resonance imaging (MRI) apparatus by using multi-parameter mapping including applying to the object a plurality of radio frequency (RF) pulses separated by a first repetition time and a second repetition time, the first repetition time and the second repetition time being determined based on the first material and the second material; undersampling first MR signals corresponding to the first material and second MR signals corresponding to the second material in a K-space; and performing matching between the undersampled first and the undersampled second MR signals and a signal model for the multi-parameter mapping to determine attribute values corresponding to the first and the second materials at at least one point in an MR image of the object.
    Type: Grant
    Filed: November 11, 2015
    Date of Patent: January 1, 2019
    Assignees: SAMSUNG ELECTRONICS CO., LTD., INDUSTRY-ACADEMIC COOPERATION FOUNDATION, YONSEI UNIVERSITY
    Inventors: Lae-hoon Kang, Dong-hyun Kim, Min-oh Kim, Dong-yeob Han, Do-sik Hwang, Yong-sup Park, Jong-buhm Park, Jae-sung Lee
  • Patent number: 9989609
    Abstract: A method and an apparatus for adjusting the parameters of a magnetic resonance image are disclosed. An embodiment of the invention provides a method for adjusting a parameter at an imaging device that includes: (a) obtaining and storing MR (magnetic resonance) data; (b) calculating a constant by using the MR data; and (c) outputting a magnetic resonance image having a different contrast in real time, when a user manipulation is inputted, by using the constant and a parameter adjusted according to the manipulation.
    Type: Grant
    Filed: April 2, 2015
    Date of Patent: June 5, 2018
    Assignee: INDUSTRY-ACADEMIC FOUNDATION, YONSEI UNIVERSITY
    Inventor: Do Sik Hwang
  • Patent number: 9977109
    Abstract: Provided is a magnetic resonance imaging (MRI) apparatus.
    Type: Grant
    Filed: November 11, 2014
    Date of Patent: May 22, 2018
    Assignees: SAMSUNG ELECTRONICS CO., LTD., INDUSTRY-ACADEMIC COOPERATION FOUNDATION, YONSEI UNIVERSITY
    Inventors: Young-woon Lee, Jin-seong Jang, Do-sik Hwang, Tae-joon Eo, Hae-kyung Jung, Dong-hyun Kim, Min-oh Kim, Na-rae Choi, Dong-yeob Han
  • Patent number: 9928576
    Abstract: A denoising method and apparatus for multi-contrast MRI's are disclosed. An aspect of the invention provides a denoising method for an MRI that includes: acquiring multiple MRI's having different contrast levels for the same site; determining pixels corresponding to the same tissue by using the MRI's; and calculating a new luminance value for the pixels by using luminance values of the pixels that are determined to be belonging to the same tissue.
    Type: Grant
    Filed: October 31, 2014
    Date of Patent: March 27, 2018
    Assignee: INDUSTRY-ACADEMIC COOPERATION FOUNDATION, YONSEI UNIVERSITY
    Inventor: Do Sik Hwang
  • Patent number: 9927508
    Abstract: Provided is a magnetic resonance imaging (MRI) apparatus. The MRI apparatus includes: a data acquisition unit configured to acquire a first k-space including a first missing line by undersampling an MR signal received from an object at a first time point, acquire a second k-space including a first acquired line corresponding to the first missing line by undersampling an MR signal received from the object at a second time point, and acquire a third k-space including a second acquired line corresponding to the first missing line by undersampling an MR signal received from the object at a third time point; and an image processor configured to interpolate data in the first missing line based on data in the first and second acquired lines.
    Type: Grant
    Filed: November 11, 2014
    Date of Patent: March 27, 2018
    Assignees: SAMSUNG ELECTRONICS CO., LTD., INDUSTRY-ACADEMIC COOPERATION FOUNDATION, YONSEI UNIVERSITY
    Inventors: Young-yoon Lee, Do-sik Hwang, Tae-joon Eo, Jin-seong Jang, Hae-kyung Jung, Dong-hyun Kim, Min-oh Kim, Na-rae Choi, Dong-yeob Han
  • Patent number: 9506896
    Abstract: A method and apparatus for envelope detection are disclosed. An envelope detection method according to an embodiment of the invention can include: receiving ultrasonic signals reflected off a target object; detecting peaks by using differences in pulses in the received signals; and generating an envelope by connecting the detected peaks with straight or curved lines.
    Type: Grant
    Filed: October 31, 2014
    Date of Patent: November 29, 2016
    Assignee: INDUSTRY-ACADEMIC COOPERATION FOUNDATION, YONSEI UNIVERSITY
    Inventors: Do Sik Hwang, Jin Seong Jang
  • Publication number: 20160131729
    Abstract: Provided are a method and apparatus for processing a magnetic resonance (MR) image of an object including first and second materials on a magnetic resonance imaging (MRI) apparatus by using multi-parameter mapping including applying to the object a plurality of radio frequency (RF) pulses separated by a first repetition time and a second repetition time, the first repetition time and the second repetition time being determined based on the first material and the second material; undersampling first MR signals corresponding to the first material and second MR signals corresponding to the second material in a K-space; and performing matching between the undersampled first and the undersampled second MR signals and a signal model for the multi-parameter mapping to determine attribute values corresponding to the first and the second materials at at least one point in an MR image of the object.
    Type: Application
    Filed: November 11, 2015
    Publication date: May 12, 2016
    Applicants: SAMSUNG ELECTRONICS CO., LTD., INDUSTRY-ACADEMIC COOPERATION FOUNDATION, YONSEI UNIVERSITY
    Inventors: Lae-hoon KANG, Dong-hyun KIM, Min-oh KIM, Dong-yeob HAN, Do-sik HWANG, Yong-sup PARK, Jong-buhm PARK, Jae-sung LEE
  • Patent number: 9241671
    Abstract: Disclosed are an apparatus and a method for removing noise from biosignals. An embodiment of the invention provides an apparatus for removing noise from biosignals measured for a particular period of time that includes: a similarity calculating unit configured to calculate a similarity between any one biosignal from among the biosignals and other biosignals; and a noise removal unit configured to remove noise from the any one biosignal by using the similarity. Aspects of the invention provide the advantage of effectively removing noise from biosignals without distorting the waveforms of the biosignals.
    Type: Grant
    Filed: February 26, 2013
    Date of Patent: January 26, 2016
    Assignee: INDUSTRY-ACADEMIC COOPERATION FOUNDATION, YONSEI UNIVERSITY
    Inventors: Do-Sik Hwang, Ung Jang, Ji-han Kim
  • Publication number: 20150285886
    Abstract: A method and an apparatus for adjusting the parameters of a magnetic resonance image are disclosed. An embodiment of the invention provides a method for adjusting a parameter at an imaging device that includes: (a) obtaining and storing MR (magnetic resonance) data; (b) calculating a constant by using the MR data; and (c) outputting a magnetic resonance image having a different contrast in real time, when a user manipulation is inputted, by using the constant and a parameter adjusted according to the manipulation.
    Type: Application
    Filed: April 2, 2015
    Publication date: October 8, 2015
    Inventor: Do Sik HWANG
  • Patent number: 9119546
    Abstract: A method of controlling of an R-peak detection apparatus, which detects an R-peak from an ElectroCardioGram (ECG) signal, includes receiving the ECG signal, reading out a pre-stored ECG template, comparing the EG signal with the pre-stored ECG template to determine a similarity between the ECG signal and the pre-stored ECG template and determining whether the similarity is equal to or greater than a threshold value, and determining a corresponding interval as the R-peak when the similarity is equal to or greater than the threshold value.
    Type: Grant
    Filed: December 21, 2012
    Date of Patent: September 1, 2015
    Assignee: Industry-Academic Cooperation Foundation Yonsei University
    Inventors: Sang-Hun Lee, Ji-Han Kim, Do-Sik Hwang, Ung Jang
  • Publication number: 20150212176
    Abstract: Provided is a magnetic resonance imaging (MRI) apparatus. The MRI apparatus includes: a data acquisition unit configured to acquire a first k-space including a first missing line by undersampling an MR signal received from an object at a first time point, acquire a second k-space including a first acquired line corresponding to the first missing line by undersampling an MR signal received from the object at a second time point, and acquire a third k-space including a second acquired line corresponding to the first missing line by undersampling an MR signal received from the object at a third time point; and an image processor configured to interpolate data in the first missing line based on data in the first and second acquired lines.
    Type: Application
    Filed: November 11, 2014
    Publication date: July 30, 2015
    Applicants: SAMSUNG ELECTRONICS CO., LTD., INDUSTRY-ACADEMIC COOPERATION FOUNDATION, YONSEI UNIVERSITY
    Inventors: Young-yoon LEE, Do-sik HWANG, Tae-joon EO, Jin-seong JANG, Hae-kyung JUNG, Dong-hyun KIM, Min-oh KIM, Na-rae CHOI, Dong-yeob HAN
  • Publication number: 20150139516
    Abstract: A denoising method and apparatus for multi-contrast MRI's are disclosed. An aspect of the invention provides a denoising method for an MRI that includes: acquiring multiple MRI's having different contrast levels for the same site; determining pixels corresponding to the same tissue by using the MRI's; and calculating a new luminance value for the pixels by using luminance values of the pixels that are determined to be belonging to the same tissue.
    Type: Application
    Filed: October 31, 2014
    Publication date: May 21, 2015
    Inventor: Do Sik HWANG
  • Publication number: 20150135838
    Abstract: A method and apparatus for envelope detection are disclosed. An envelope detection method according to an embodiment of the invention can include: receiving ultrasonic signals reflected off a target object; detecting peaks by using differences in pulses in the received signals; and generating an envelope by connecting the detected peaks with straight or curved lines.
    Type: Application
    Filed: October 31, 2014
    Publication date: May 21, 2015
    Inventors: Do Sik HWANG, Jin Seong JANG
  • Publication number: 20150130461
    Abstract: Provided is a magnetic resonance imaging (MRI) apparatus.
    Type: Application
    Filed: November 11, 2014
    Publication date: May 14, 2015
    Applicants: SAMSUNG ELECTRONICS CO., LTD., INDUSTRY-ACADEMIC COOPERATION FOUNDATION, YONSEI UNIVERSITY
    Inventors: Young-woon LEE, Jin-seong JANG, Do-sik HWANG, Tae-joon EO, Hae-kyung JUNG, Dong-hyun KIM, Min-oh KIM, Na-rae CHOI, Dong-yeob HAN
  • Publication number: 20130245479
    Abstract: Disclosed are an apparatus and a method for removing noise from biosignals. An embodiment of the invention provides an apparatus for removing noise from biosignals measured for a particular period of time that includes: a similarity calculating unit configured to calculate a similarity between any one biosignal from among the biosignals and other biosignals; and a noise removal unit configured to remove noise from the any one biosignal by using the similarity. Aspects of the invention provide the advantage of effectively removing noise from biosignals without distorting the waveforms of the biosignals.
    Type: Application
    Filed: February 26, 2013
    Publication date: September 19, 2013
    Applicant: Industry-Academic Cooperation Foundation Yonsei University
    Inventors: Do-Sik Hwang, Ung Jang, Ji-han Kim
  • Publication number: 20110306869
    Abstract: An apparatus and method for producing tomographic image is disclosed. The disclosed apparatus for producing tomographic image comprises: an ultrasonic imaging unit configured to obtain multiple ultrasonic images of a subject; a tomographic imaging unit configured to obtain one or more tomographic image data of the subject; and a tomographic image correction unit configured to produce corrected tomographic image of a tomographic image which can be produced from the one or more tomographic image data by using the multiple ultrasonic images.
    Type: Application
    Filed: June 15, 2011
    Publication date: December 15, 2011
    Applicant: Industry-Academic Cooperation Foundation, Yonsei University
    Inventors: Do-Sik Hwang, Ji-Han Kim, Young-Jin Kim