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).

  • Patent number: 11508146
    Abstract: A convolutional neural network (CNN) processing method and apparatus. The apparatus may select, based on at least one of a characteristic of at least one kernel of a convolution layer or a characteristic of an input of the convolution layer, one operation mode from a first operation mode reusing a kernel, of the at least one kernel, and a second operation mode reusing the input, and perform a convolution operation based on the selected operation mode.
    Type: Grant
    Filed: August 12, 2020
    Date of Patent: November 22, 2022
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jinwoo Son, Changyong Son, Chang Kyu Choi, Jaejoon Han
  • Patent number: 11455384
    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: Grant
    Filed: October 29, 2020
    Date of Patent: September 27, 2022
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Minsu Ko, Seungju Han, Jaejoon Han, Deoksang Kim, Chang Kyu Choi
  • Patent number: 11449971
    Abstract: Disclosed is an image fusion method and apparatus. The fusion method includes detecting first feature points of an object in a first image frame from the first image frame; transforming the first image frame based on the detected first feature points and predefined reference points to generate a transformed first image frame; detecting second feature points of the object in a second image frame from the second image frame; transforming the second image frame based on the detected second feature points and the predefined reference points to generate a transformed second image frame; and generating a combined image by combining the transformed first image frame and the transformed second image frame.
    Type: Grant
    Filed: December 18, 2018
    Date of Patent: September 20, 2022
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Minsu Ko, Seungju Han, Jaejoon Han, Jihye Kim, SungUn Park, Chang Kyu Choi
  • Patent number: 11423702
    Abstract: An object recognition apparatus and method are provided. The apparatus includes a processor configured to verify a target image using an object model and based on reference intermediate data extracted by a partial layer of the object model as used in an object recognition of an input image, in response to a failure of a verification of the input image after a success of the object recognition of the input image, and perform an additional verification of the target image in response to the target image being verified in the verifying of the target image.
    Type: Grant
    Filed: November 5, 2020
    Date of Patent: August 23, 2022
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: SeungJu Han, SungUn Park, JaeJoon Han, Jinwoo Son, ChangYong Son, Minsu Ko, Jihye Kim, Chang Kyu Choi
  • Patent number: 11403878
    Abstract: A processor-implemented verification method includes: detecting a characteristic of an input image; acquiring input feature transformation data and enrolled feature transformation data by respectively transforming input feature data and enrolled feature data based on the detected characteristic, wherein the input feature data is extracted from the input image using a feature extraction model; and verifying a user corresponding to the input image based on a result of comparison between the input feature transformation data and the enrolled feature transformation data.
    Type: Grant
    Filed: December 27, 2019
    Date of Patent: August 2, 2022
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Minsu Ko, Seungju Han, Wonsuk Chang, Jaejoon Han, Seon Min Rhee, Chang Kyu Choi
  • Patent number: 11366978
    Abstract: A data recognition method includes: extracting a feature map from input data based on a feature extraction layer of a data recognition model; pooling component vectors from the feature map based on a pooling layer of the data recognition model; and generating an embedding vector by recombining the component vectors based on a combination layer of the data recognition model.
    Type: Grant
    Filed: March 7, 2019
    Date of Patent: June 21, 2022
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Insoo Kim, Kyuhong Kim, Chang Kyu Choi
  • Publication number: 20220172510
    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: February 22, 2022
    Publication date: June 2, 2022
    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
  • Patent number: 11347308
    Abstract: A gaze tracking method and apparatus, and a gaze tracking neural network training method and apparatus are provided. The gaze tracking apparatus includes one or more processors and a memory, and the one or more processors obtain output position information from an input face image of a user using a neural network model, determines a position adjustment parameter for the user, and predicts gaze position information of the user by adjusting the output position information based on the position adjustment parameter.
    Type: Grant
    Filed: July 24, 2020
    Date of Patent: May 31, 2022
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Yongchao Liu, Hui Zhang, Xiabing Liu, Byung In Yoo, Chang Kyu Choi, Jaejoon Han, Youngjun Kwak, Tianchu Guo
  • Patent number: 11347973
    Abstract: An apparatus for training an image generative model and an image generating apparatus are provided. The apparatus generates output images from a plurality of input images based on the generative model, extracts depth features from the respective output images based on a depth classification model, calculates a depth loss from the extracted depth features, and trains the generative model based on an overall loss that includes the calculated depth loss.
    Type: Grant
    Filed: October 8, 2019
    Date of Patent: May 31, 2022
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Seon Min Rhee, Minsu Ko, Jihye Kim, Byung In Yoo, Chang Kyu Choi, Jaejoon Han
  • Publication number: 20220165685
    Abstract: A device and substrate are disclosed. An illustrative device includes a substrate having a first surface and an opposing second surface, a solder material receiving curved surface exposed at the second surface of the substrate, a solder resist material that at least partially covers the solder material receiving curved surface such that a middle portion of the solder receiving curved surface is exposed and such that an edge portion of the solder material receiving curved surface is covered by the solder resist material and forms an undercut, and a solder material disposed within the solder material receiving curved surface and within the undercut.
    Type: Application
    Filed: February 9, 2022
    Publication date: May 26, 2022
    Inventors: YongIk Choi, Chris Chung, Michael Leary, Domingo Figueredo, Chang Kyu Choi, Sarah Haney, Li Sun
  • Publication number: 20220138576
    Abstract: A lightened neural network method and apparatus. The neural network apparatus includes a processor configured to generate a neural network with a plurality of layers including plural nodes by applying lightened weighted connections between neighboring nodes in neighboring layers of the neural network to interpret input data applied to the neural network, wherein lightened weighted connections of at least one of the plurality of layers includes weighted connections that have values equal to zero for respective non-zero values whose absolute values are less than an absolute value of a non-zero value. The lightened weighted connections also include weighted connections that have values whose absolute values are no greater than an absolute value of another non-zero value, the lightened weighted connections being lightened weighted connections of trained final weighted connections of a trained neural network whose absolute maximum values are greater than the absolute value of the other non-zero value.
    Type: Application
    Filed: January 12, 2022
    Publication date: May 5, 2022
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Changyong SON, Jinwoo SON, Byungin YOO, Chang Kyu CHOI, Jae-Joon HAN
  • Patent number: 11295111
    Abstract: An apparatus and method for detecting a fake fingerprint is disclosed. The apparatus may divide an input fingerprint image into blocks, determine an image quality assessment (IQA) value associated with each block, determine a confidence value based on the IQA values using a confidence determination model, and determine whether an input fingerprint in the input fingerprint image is a fake fingerprint based on the determined confidence value.
    Type: Grant
    Filed: April 28, 2020
    Date of Patent: April 5, 2022
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Wonjun Kim, Youngsung Kim, Sungjoo Suh, Hyungsuk Kim, Chang Kyu Choi
  • Publication number: 20220092295
    Abstract: A three-dimensional (3D) image-based facial verification method and apparatus is provided. The facial verification method may include capturing a facial image of a 3D face of a user, determining an occluded region in the captured facial image by comparing the captured facial image and an average facial image, generating a synthetic image by synthesizing the captured facial image and the average facial image based on the occluded region, and verifying the user based on the synthetic image.
    Type: Application
    Filed: December 2, 2021
    Publication date: March 24, 2022
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Seungju HAN, Minsu KO, Jaejoon HAN, Chang Kyu CHOI
  • Patent number: 11276650
    Abstract: A device and substrate are disclosed. An illustrative device includes a substrate having a first surface and an opposing second surface, a solder material receiving curved surface exposed at the second surface of the substrate, a solder resist material that at least partially covers the solder material receiving curved surface such that a middle portion of the solder receiving curved surface is exposed and such that an edge portion of the solder material receiving curved surface is covered by the solder resist material and forms an undercut, and a solder material disposed within the solder material receiving curved surface and within the undercut.
    Type: Grant
    Filed: October 31, 2019
    Date of Patent: March 15, 2022
    Assignee: Avago Technologies International Sales Pte. Limited
    Inventors: YongIk Choi, Chris Chung, Michael Leary, Domingo Figueredo, Chang Kyu Choi, Sarah Haney, Li Sun
  • Patent number: 11271553
    Abstract: A buffer circuit configured to receive first and second input signals through first and second input transistors coupled to a first power voltage node, output a first output signal through a first output node and a second output signal through a second output node based on the first and second input signals. A load circuit is coupled among the first output node, the second output node, and a second power voltage node and a resistance value is adjusted based on at least one of the first and second output signals.
    Type: Grant
    Filed: February 9, 2021
    Date of Patent: March 8, 2022
    Assignee: SK hynix Inc.
    Inventors: Sun Ki Cho, Dong Uc Ko, Yang Ho Sur, Jun Yong Song, Sung Gil Jang, Hae Kang Jung, Min Sung Cheon, Chang Kyu Choi, Tae Jin Hwang
  • Publication number: 20220067419
    Abstract: A method and apparatus for processing an image based on partial images. The method includes extracting a feature of a current partial processing region of an input image frame by inputting pixel data of the current partial processing region into a convolutional neural network (CNN), updating a hidden state of a recurrent neural network (RNN) for a context between the current partial processing region and at least one previous partial processing region by inputting the extracted feature into the RNN, and generating an image processing result for the input image frame based on the updated hidden state.
    Type: Application
    Filed: February 17, 2021
    Publication date: March 3, 2022
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: JAEHYOUNG YOO, CHANGYONG SON, DONGWOOK LEE, JAEJOON HAN, CHANG KYU CHOI
  • Publication number: 20220069813
    Abstract: A buffer circuit configured to receive first and second input signals through first and second input transistors coupled to a first power voltage node, output a first output signal through a first output node and a second output signal through a second output node based on the first and second input signals. A load circuit is coupled among the first output node, the second output node, and a second power voltage node and a resistance value is adjusted based on at least one of the first and second output signals.
    Type: Application
    Filed: February 9, 2021
    Publication date: March 3, 2022
    Applicant: SK hynix Inc.
    Inventors: Sun Ki Cho, Dong Uc Ko, Yang Ho Sur, Jun Yong Song, Sung Gil Jang, Hae Kang Jung, Min Sung Cheon, Chang Kyu Choi, Tae Jin Hwang
  • Patent number: 11256906
    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: Grant
    Filed: December 4, 2020
    Date of Patent: February 22, 2022
    Assignee: 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
  • Publication number: 20220044361
    Abstract: A processor-implemented method of generating feature data includes: receiving an input image; generating, based on a pixel value of the input image, at least one low-bit image having a number of bits per pixel lower than a number of bits per pixel of the input image; and generating, using at least one neural network, feature data corresponding to the input image from the at least one low-bit image.
    Type: Application
    Filed: October 22, 2021
    Publication date: February 10, 2022
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Chang Kyu CHOI, Youngjun KWAK, Seohyung LEE
  • Publication number: 20220044009
    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: October 26, 2021
    Publication date: February 10, 2022
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Seungju HAN, Minsu KO, Deoksang KIM, Chang Kyu CHOI, Jaejoon HAN