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).
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Patent number: 11532177Abstract: 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: GrantFiled: January 8, 2018Date of Patent: December 20, 2022Assignee: Samsung Electronics Co., Ltd.Inventors: Changyong Son, Deoksang Kim, Minsu Ko, Jinwoo Son, Seungju Han, Chang Kyu Choi, Jae-Joon Han
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Patent number: 11514290Abstract: 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: GrantFiled: December 11, 2017Date of Patent: November 29, 2022Assignee: Samsung Electronics Co., Ltd.Inventors: Jinwoo Son, Changyong Son, Jaejoon Han, Chang Kyu Choi
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Patent number: 11514602Abstract: A gaze estimation method includes receiving, by a processor, input data including a current image and a previous image each including a face of a user, determining, by the processor, a gaze mode indicating a relative movement between the user and a camera that captured the current image and the previous image based on the input data, and estimating, by the processor, a gaze of the user based on the determined gaze mode, wherein the determined gaze mode is one of a plurality of gaze modes comprising a stationary mode and a motion mode.Type: GrantFiled: December 20, 2019Date of Patent: November 29, 2022Assignee: Samsung Electronics Co., Ltd.Inventors: Tianchu Guo, Hui Zhang, Xiabing Liu, Chang Kyu Choi, Jaejoon Han, Yongchao Liu
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Patent number: 11508146Abstract: 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: GrantFiled: August 12, 2020Date of Patent: November 22, 2022Assignee: Samsung Electronics Co., Ltd.Inventors: Jinwoo Son, Changyong Son, Chang Kyu Choi, Jaejoon Han
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Patent number: 11455384Abstract: 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: GrantFiled: October 29, 2020Date of Patent: September 27, 2022Assignee: Samsung Electronics Co., Ltd.Inventors: Minsu Ko, Seungju Han, Jaejoon Han, Deoksang Kim, Chang Kyu Choi
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Patent number: 11449971Abstract: 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: GrantFiled: December 18, 2018Date of Patent: September 20, 2022Assignee: Samsung Electronics Co., Ltd.Inventors: Minsu Ko, Seungju Han, Jaejoon Han, Jihye Kim, SungUn Park, Chang Kyu Choi
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Patent number: 11423702Abstract: 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: GrantFiled: November 5, 2020Date of Patent: August 23, 2022Assignee: Samsung Electronics Co., Ltd.Inventors: SeungJu Han, SungUn Park, JaeJoon Han, Jinwoo Son, ChangYong Son, Minsu Ko, Jihye Kim, Chang Kyu Choi
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Patent number: 11403878Abstract: 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: GrantFiled: December 27, 2019Date of Patent: August 2, 2022Assignee: Samsung Electronics Co., Ltd.Inventors: Minsu Ko, Seungju Han, Wonsuk Chang, Jaejoon Han, Seon Min Rhee, Chang Kyu Choi
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Patent number: 11366978Abstract: 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: GrantFiled: March 7, 2019Date of Patent: June 21, 2022Assignee: Samsung Electronics Co., Ltd.Inventors: Insoo Kim, Kyuhong Kim, Chang Kyu Choi
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Publication number: 20220172510Abstract: 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: ApplicationFiled: February 22, 2022Publication date: June 2, 2022Applicant: 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
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Patent number: 11347973Abstract: 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: GrantFiled: October 8, 2019Date of Patent: May 31, 2022Assignee: Samsung Electronics Co., Ltd.Inventors: Seon Min Rhee, Minsu Ko, Jihye Kim, Byung In Yoo, Chang Kyu Choi, Jaejoon Han
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Patent number: 11347308Abstract: 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: GrantFiled: July 24, 2020Date of Patent: May 31, 2022Assignee: Samsung Electronics Co., Ltd.Inventors: Yongchao Liu, Hui Zhang, Xiabing Liu, Byung In Yoo, Chang Kyu Choi, Jaejoon Han, Youngjun Kwak, Tianchu Guo
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Publication number: 20220165685Abstract: 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: ApplicationFiled: February 9, 2022Publication date: May 26, 2022Inventors: YongIk Choi, Chris Chung, Michael Leary, Domingo Figueredo, Chang Kyu Choi, Sarah Haney, Li Sun
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Publication number: 20220138576Abstract: 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: ApplicationFiled: January 12, 2022Publication date: May 5, 2022Applicant: Samsung Electronics Co., Ltd.Inventors: Changyong SON, Jinwoo SON, Byungin YOO, Chang Kyu CHOI, Jae-Joon HAN
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Patent number: 11295111Abstract: 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: GrantFiled: April 28, 2020Date of Patent: April 5, 2022Assignee: Samsung Electronics Co., Ltd.Inventors: Wonjun Kim, Youngsung Kim, Sungjoo Suh, Hyungsuk Kim, Chang Kyu Choi
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Publication number: 20220092295Abstract: 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: ApplicationFiled: December 2, 2021Publication date: March 24, 2022Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Seungju HAN, Minsu KO, Jaejoon HAN, Chang Kyu CHOI
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Patent number: 11276650Abstract: 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: GrantFiled: October 31, 2019Date of Patent: March 15, 2022Assignee: Avago Technologies International Sales Pte. LimitedInventors: YongIk Choi, Chris Chung, Michael Leary, Domingo Figueredo, Chang Kyu Choi, Sarah Haney, Li Sun
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Patent number: 11271553Abstract: 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: GrantFiled: February 9, 2021Date of Patent: March 8, 2022Assignee: 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
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Publication number: 20220069813Abstract: 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: ApplicationFiled: February 9, 2021Publication date: March 3, 2022Applicant: 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
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Publication number: 20220067419Abstract: 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: ApplicationFiled: February 17, 2021Publication date: March 3, 2022Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: JAEHYOUNG YOO, CHANGYONG SON, DONGWOOK LEE, JAEJOON HAN, CHANG KYU CHOI