Patents by Inventor Chang Kyu Choi

Chang Kyu Choi 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).

  • USER AUTHENTICATION METHOD AND APPARATUS USING INFRARED RAY (IR) IMAGE
    Publication number: 20190005217
    Abstract: Provided is a user authentication method and apparatus that obtains first environmental information indicating an environmental condition in which an input image of a user is captured, extracts a first feature vector from the input image, selects a second feature vector including second environmental information that matches the first environmental information from enrolled feature vectors in an enrollment database (DB), and authenticates the user based on the first feature vector and the second feature vector.
    Type: Application
    Filed: March 15, 2018
    Publication date: January 3, 2019
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Jihye KIM, Jinwoo SON, Chang Kyu CHOI, Jae-Joon HAN
  • Object learning and recognition method and system
    Patent number: 10163215
    Abstract: An object recognition system is provided. The object recognition system for recognizing an object may include an input unit to receive, as an input, a depth image representing an object to be analyzed, and a processing unit to recognize a visible object part and a hidden object part of the object, from the depth image, by using a classification tree. The object recognition system may include a classification tree learning apparatus to generate the classification tree.
    Type: Grant
    Filed: October 18, 2016
    Date of Patent: December 25, 2018
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Byung In Yoo, Chang Kyu Choi, Chang Kyo Lee, Jae Joon Han
  • USER AUTHENTICATION METHOD AND APPARATUS WITH ADAPTIVELY UPDATED ENROLLMENT DATABASE (DB)
    Publication number: 20180365402
    Abstract: A method and apparatus with an adaptively updated enrollment database (DB) are provided. A method with an adaptively updated enrollment database (DB) includes extracting an input feature vector from an input image, determining whether the input feature vector is included in a changeable enrollment range, with the changeable enrollment range being determined based on a threshold distance from each of plural enrolled feature vectors in the enrollment DB, and with the enrolled feature vectors corresponding to enrolled images, determining whether to enroll the input feature vector in the enrollment DB in response to the input feature vector being determined as being included in the changeable enrollment range, and in response to a result of the determining of whether to enroll the input feature vector being to enroll the input feature vector, selectively enrolling the input feature vector in the enrollment DB.
    Type: Application
    Filed: May 1, 2018
    Publication date: December 20, 2018
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Minsu KO, Seungju HAN, JaeJoon HAN, Deoksang KIM, Chang Kyu CHOI
  • Method, apparatus, and system for recognizing fingerprint
    Patent number: 10140500
    Abstract: A fingerprint recognition method includes determining a code corresponding to a query image based on features of blocks in the query image, obtaining information corresponding to the determined code from a lookup table, and verifying the query image based on the obtained information.
    Type: Grant
    Filed: November 5, 2015
    Date of Patent: November 27, 2018
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Chang Kyu Choi, Wonjun Kim, Sungjoo Suh, Byungin Yoo, Jaejoon Han
  • Interfacing device and method for providing user interface exploiting multi-modality
    Patent number: 10133470
    Abstract: An interfacing device for providing a user interface (UI) exploiting a multi-modality may recognize at least two modality inputs for controlling a scene, and generate scene control information based on the at least two modality inputs.
    Type: Grant
    Filed: October 4, 2013
    Date of Patent: November 20, 2018
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jae Joon Han, Seung Ju Han, Du-Sik Park, Chang Kyu Choi
  • Liveness test method and apparatus
    Patent number: 10121059
    Abstract: A liveness test method and apparatus is disclosed. A processor implemented liveness test method includes extracting an interest region of an object from a portion of the object in an input image, performing a liveness test on the object using a neural network model-based liveness test model, the liveness test model using image information of the interest region as provided first input image information to the liveness test model and determining liveness based at least on extracted texture information from the information of the interest region by the liveness test model, and indicating a result of the liveness test.
    Type: Grant
    Filed: July 21, 2017
    Date of Patent: November 6, 2018
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Byungin Yoo, Youngjun Kwak, Jungbae Kim, Jinwoo Son, Changkyo Lee, Chang Kyu Choi, Jaejoon Han
  • FACE VERIFICATION METHOD AND APPARATUS
    Publication number: 20180285629
    Abstract: A face verification method and apparatus is disclosed. The face verification method includes selecting a current verification mode, from among plural verification modes, to be implemented for the verifying of the face, determining one or more recognizers, from among plural recognizers, based on the selected current verification mode, extracting feature information from information of the face using at least one of the determined one or more recognizers, and indicating whether a verification is successful based on the extracted feature information.
    Type: Application
    Filed: January 8, 2018
    Publication date: October 4, 2018
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Changyong SON, Deoksang KIM, Minsu KO, Jinwoo SON, Seungju HAN, Chang Kyu CHOI, Jae-Joon HAN
  • FACE VERIFICATION METHOD AND APPARATUS
    Publication number: 20180285628
    Abstract: Disclosed is a face verification method and apparatus. The method including analyzing a current frame of a verification image, determining a current frame state score of the verification image indicating whether the current frame is in a state predetermined as being appropriate for verification, determining whether the current frame state score satisfies a predetermined validity condition, and selectively, based on a result of the determining of whether the current frame state score satisfies the predetermined validity condition, extracting a feature from the current frame and performing verification by comparing a determined similarity between the extracted feature and a registered feature to a set verification threshold.
    Type: Application
    Filed: December 6, 2017
    Publication date: October 4, 2018
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Changyong SON, Wonsuk CHANG, Deoksang KIM, Dae-Kyu SHIN, Byungin YOO, Seungju HAN, Jaejoon HAN, Jinwoo SON, Chang Kyu CHOI
  • FACE VERIFYING METHOD AND APPARATUS
    Publication number: 20180285630
    Abstract: A face verifying method and apparatus. The face verifying method includes detecting a face region from an input image, generating a synthesized face image by combining image information of the face region and reference image information, based on a determined masking region, extracting one or more face features from the face region and the synthesized face image, performing a verification operation with respect to the one or more face features and predetermined registration information, and indicating whether verification of the input image is successful based on a result of the performed verification operation.
    Type: Application
    Filed: February 5, 2018
    Publication date: October 4, 2018
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Seungju HAN, Minsu KO, Deoksang KIM, Chang Kyu CHOI, Jaejoon HAN
  • CONVOLUTIONAL NEURAL NETWORK (CNN) PROCESSING METHOD AND APPARATUS
    Publication number: 20180285715
    Abstract: Disclosed is a convolutional neural network (CNN) processing apparatus and method, the apparatus configured to determine a loading space unit for at least one loading space in an input based on a height or a width for an input feature map of the input and an extent of a dimension of a kernel feature map, load target input elements corresponding to a target loading space, among the at least one loading space, from a memory and store the target input elements in an allocated input buffer having a size corresponding to the loading space unit, and perform a convolution operation between the target input elements stored in the input buffer and at least one kernel element of a kernel.
    Type: Application
    Filed: December 11, 2017
    Publication date: October 4, 2018
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Jinwoo SON, Changyong SON, Jaejoon HAN, Chang Kyu CHOI
  • METHOD OF DISPLAYING MENU BASED ON DEPTH INFORMATION AND SPACE GESTURE OF USER
    Publication number: 20180253210
    Abstract: A method of displaying a menu based on at least one of a depth information and a space gesture is provided. The method including determining depth information corresponding to a distance from a screen of a user terminal to a hand of a user; identifying at least one layer among a plurality of layers based on the depth information; and applying a graphic effect to the identified layer so that a menu page corresponding to the at least one identified layer is displayed on the screen of the user terminal.
    Type: Application
    Filed: April 30, 2018
    Publication date: September 6, 2018
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Keun Joo PARK, Hyun Surk RYU, Chang Kyu CHOI, Joon Ah PARK
  • FINGERPRINT RECOGNITION-BASED CONTROL METHOD AND DEVICE
    Publication number: 20180241746
    Abstract: A fingerprint recognition-based control method may include acquiring, by a fingerprint sensor, sensor data in response to a contact between a physical object and a sensing area of the fingerprint sensor; receiving an input through a first input receiver from among one or more input receivers, the first input receiver being located in a vicinity of the fingerprint sensor; verifying the sensor data to be an input fingerprint; and sensing a motion of the physical object based on the acquired sensor data and the received input, in response to a positive result of the verifying.
    Type: Application
    Filed: April 23, 2018
    Publication date: August 23, 2018
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Hyunjeong LEE, Chang Kyu CHOI, Sungjoo SUH
  • Device and method of recognizing iris
    Publication number: 20180218213
    Abstract: A device and method of recognizing an iris is provided. An iris recognition device may determine a threshold brightness using a histogram of a reference area from an iris image and exclude a target pixel from iris recognition in a candidate area based on the determined threshold brightness.
    Type: Application
    Filed: August 9, 2017
    Publication date: August 2, 2018
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: HYUNJEONG LEE, Jihye KIM, SUNGJOO SUH, CHANG KYU CHOI
  • AUTHENTICATION METHOD AND AUTHENTICATION APPARATUS USING SYNTHESIZED CODE FOR IRIS
    Publication number: 20180211089
    Abstract: An authentication method and corresponding apparatus includes obtaining iris images, and constituting an enroll set including iris codes and mask codes corresponding to the iris images. The authentication method and corresponding apparatus also include generating a synthesized code including a synthesized iris code and a synthesized mask code based on correlations between the iris codes included in the enroll set in block units.
    Type: Application
    Filed: August 10, 2017
    Publication date: July 26, 2018
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jihye KIM, Sungjoo SUH, Hyunjeong LEE, Chang Kyu CHOI
  • FACIAL EXPRESSION IMAGE PROCESSING METHOD AND APPARATUS
    Publication number: 20180189553
    Abstract: A processor implemented method of processing a facial expression image, the method includes acquiring an expression feature of each of at least two reference facial expression images; generating a new expression feature based on an interpolation value of the expression feature; and adjusting a target facial expression image based on the new expression feature and creating a new facial expression image.
    Type: Application
    Filed: December 11, 2017
    Publication date: July 5, 2018
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Tianchu GUO, Youngsung KIM, Hui ZHANG, Byungin YOO, Chang Kyu CHOI, Jae-Joon HAN, Jingtao XU, Deheng QIAN
  • IMAGE PROCESSING METHOD AND APPARATUS
    Publication number: 20180181796
    Abstract: An image processing apparatus, includes an image classifier configured to determine whether an input image is a low-quality image or a high-quality image; and an image evaluator configured to determine a first predetermined number of clearest images from a plurality of low-quality images determined by the image classifier.
    Type: Application
    Filed: December 14, 2017
    Publication date: June 28, 2018
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Biao WANG, Bing YU, Chang Kyu CHOI, Deheng QIAN, Jae-Joon HAN, Jingtao XU, Yaozu AN
  • METHOD AND APPARATUS FOR RECOGNIZING OBJECT, AND METHOD AND APPARATUS FOR TRAINING RECOGNIZER
    Publication number: 20180181799
    Abstract: A recognition method includes receiving an input image; and recognizing a plurality of elements associated with the input image using a single recognizer pre-trained to recognize a plurality of elements simultaneously.
    Type: Application
    Filed: February 14, 2018
    Publication date: June 28, 2018
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Byungin Yoo, Namjoon Kim, Changkyo Lee, Chang Kyu Choi, Jaejoon Han
  • CONVOLUTIONAL NEURAL NETWORK (CNN) PROCESSING METHOD AND APPARATUS
    Publication number: 20180181858
    Abstract: A convolutional neural network (CNN) processing method includes selecting a survival network in a precision convolutional network based on a result of performing a high speed convolution operation between an input and a kernel using a high speed convolutional network, and performing a precision convolution operation between the input and the kernel using the survival network.
    Type: Application
    Filed: December 20, 2017
    Publication date: June 28, 2018
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Changyong SON, Jinwoo SON, Chang Kyu CHOI, Jaejoon HAN
  • METHOD AND APPARATUS TO RECOGNIZE USER
    Publication number: 20180165517
    Abstract: Disclosed is a user recognition apparatus and method, the apparatus configured to determine a validity of an iris area for each frame, to perform an iris recognition when the iris area is valid, and to extract a facial feature for a fusion recognition when the iris area is invalid.
    Type: Application
    Filed: October 24, 2017
    Publication date: June 14, 2018
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Hyunjeong LEE, Sungjoo SUH, Changyong SON, Chang Kyu CHOI, Jaejoon HAN
  • Apparatus and method of sound modulation using touch screen with pressure sensor
    Patent number: 9997148
    Abstract: Disclosed are an apparatus and a method of generating a sound by using a touch screen. A sound modulation apparatus according to the present invention includes: a sensor information input unit configured to receive sensing information on a position, at which a touch input of a user is applied to the screen, and pressure according to the touch input applied to the screen; and a sound modulation unit configured to set a tone frequency and volume of a sound to be output, and set the tone frequency according to the position, to which the touch input of the user is applied, and set the volume according to a size of the pressure according to the touch input.
    Type: Grant
    Filed: October 18, 2016
    Date of Patent: June 12, 2018
    Assignee: INDUSTRY-ACADEMIC COOPERATION FOUNDATION, YONSEI UNIVERSITY
    Inventors: Kwang Su Cho, Chang Kyu Choi, Choon Sung Nam, Min Gu Kang