Patents by Inventor Sang-Woo Ahn

Sang-Woo Ahn 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: 20240076127
    Abstract: Provided is a ceiling storage system capable of correcting a working position and constantly checking stability of a structure by detecting an amount of change in a facility. According to the ceiling storage system, a transport vehicle moves to an upper portion of a first storage area of a plurality of storage areas in a state of gripping an article, and the transport vehicle measures a first distance value between the transport vehicle and the first storage area using a distance sensor and measures a relative position value between the transport vehicle and the first storage area using a vision sensor, before unloading the article from the first storage area.
    Type: Application
    Filed: May 23, 2023
    Publication date: March 7, 2024
    Inventors: Sang Kyung LEE, Seung Gyu KANG, Hyun Jae KANG, Young Wook KIM, Sang A BANG, Yong-Jun AHN, Min Kyun LEE, Hyun Woo LEE, Jeong Hun LIM, Jun Hyuk CHANG
  • Patent number: 11893678
    Abstract: Disclosed herein are an apparatus and method for searching for a global minimum of a point cloud registration error. The apparatus includes memory in which at least one program is recorded and a processor for executing the program. The program performs collecting multiple registration results in which the registration error between a source point cloud and a target point cloud is a local minimum as candidates and selecting the registration result in which the registration error between the source point cloud and the target point cloud is a global minimum, among the candidates. Collecting the multiple registration results may comprise repeatedly randomly initializing the source point cloud and the target point cloud and registering the initialized source point cloud to the initialized target point cloud to thereby search for a registration result in which the registration error therebetween is a local minimum.
    Type: Grant
    Filed: January 25, 2022
    Date of Patent: February 6, 2024
    Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Hyuk-Min Kwon, Hyun-Cheol Kim, Jeong-Il Seo, Sang-Woo Ahn, Seung-Jun Yang
  • Publication number: 20220254095
    Abstract: Disclosed herein are an apparatus and method for searching for a global minimum of a point cloud registration error. The apparatus includes memory in which at least one program is recorded and a processor for executing the program. The program performs collecting multiple registration results in which the registration error between a source point cloud and a target point cloud is a local minimum as candidates and selecting the registration result in which the registration error between the source point cloud and the target point cloud is a global minimum, among the candidates. Collecting the multiple registration results may comprise repeatedly randomly initializing the source point cloud and the target point cloud and registering the initialized source point cloud to the initialized target point cloud to thereby search for a registration result in which the registration error therebetween is a local minimum.
    Type: Application
    Filed: January 25, 2022
    Publication date: August 11, 2022
    Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Hyuk-Min KWON, Hyun-Cheol KIM, Jeong-Il SEO, Sang-Woo AHN, Seung-Jun YANG
  • Patent number: 11354854
    Abstract: Disclosed herein a method of removing a point cloud outlier and an apparatus implementing the method. The method includes: arranging a point cloud obtained from a laser scanner along at least a first direction; selecting, neighboring first-axis points, between which a separation degree satisfies an inspection start threshold condition, as a first leading-side representative point and a first trailing-side representative point; selecting a first leading-side outlier candidate and a first trailing-side outlier candidate based on a first leading-side separation degree and a first trailing-side separation degree; and determining the first leading-side outlier candidate and the first trailing-side outlier candidate as a first outlier point, when the number of the outlier candidates satisfies an allowable threshold condition.
    Type: Grant
    Filed: February 9, 2021
    Date of Patent: June 7, 2022
    Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Hyun Cheol Kim, Hyuk Min Kwon, Jeong Il Seo, Sang Woo Ahn, Seung Jun Yang
  • Publication number: 20210248815
    Abstract: Disclosed herein a method of removing a point cloud outlier and an apparatus implementing the method. The method includes: arranging a point cloud obtained from a laser scanner along at least a first direction; selecting, neighboring first-axis points, between which a separation degree satisfies an inspection start threshold condition, as a first leading-side representative point and a first trailing-side representative point; selecting a first leading-side outlier candidate and a first trailing-side outlier candidate based on a first leading-side separation degree and a first trailing-side separation degree; and determining the first leading-side outlier candidate and the first trailing-side outlier candidate as a first outlier point, when the number of the outlier candidates satisfies an allowable threshold condition.
    Type: Application
    Filed: February 9, 2021
    Publication date: August 12, 2021
    Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Hyun Cheol KIM, Hyuk Min KWON, Jeong Il SEO, Sang Woo AHN, Seung Jun YANG
  • Patent number: 10826956
    Abstract: A method of receiving content in a client is provided. The method may include receiving, from a server, a spatial set identifier (ID) corresponding to a tile group including at least one tile, sending, to the server, a request for first content corresponding to metadata, and receiving, from the server, the first content corresponding to the request.
    Type: Grant
    Filed: October 22, 2018
    Date of Patent: November 3, 2020
    Assignee: IDEAHUB INC.
    Inventors: Seong Yong Lim, Joo Myoung Seok, Sang Woo Ahn, Yong Ju Cho, Ji Hun Cha
  • Publication number: 20190052688
    Abstract: A method of receiving content in a client is provided. The method may include receiving, from a server, a spatial set identifier (ID) corresponding to a tile group including at least one tile, sending, to the server, a request for first content corresponding to metadata, and receiving, from the server, the first content corresponding to the request.
    Type: Application
    Filed: October 22, 2018
    Publication date: February 14, 2019
    Applicant: Electronics and Telecommunications Research Institute
    Inventors: Seong Yong LIM, Joo Myoung SEOK, Sang Woo AHN, Yong Ju CHO, Ji Hun CHA
  • Patent number: 10122778
    Abstract: A method of receiving content in a client is provided. The method may include receiving, from a server, a spatial set identifier (ID) corresponding to a tile group including at least one tile, sending, to the server, a request for first content corresponding to metadata, and receiving, from the server, the first content corresponding to the request.
    Type: Grant
    Filed: April 14, 2017
    Date of Patent: November 6, 2018
    Assignee: IDEAHUB
    Inventors: Seong Yong Lim, Joo Myoung Seok, Sang Woo Ahn, Yong Ju Cho, Ji Hun Cha
  • Patent number: 10075635
    Abstract: Disclosed are a method and an apparatus for generating a panoramic image based on an image quality. The method of generating a panoramic image includes extracting a matching point to connect a base image captured by a first camera and a reference image captured by a second camera, geometrically transforming the reference image by determining a homography between the base image and the reference image, determining a change in image quality of the geometrically transformed reference image, and generating a panoramic image in which the geometrically transformed reference image is connected to the base image based on the determined change in image quality.
    Type: Grant
    Filed: January 13, 2016
    Date of Patent: September 11, 2018
    Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Joo Myoung Seok, Sang Woo Ahn, Yong Ju Cho, Ji Hun Cha
  • Patent number: 10062148
    Abstract: Provided are a method and a device for converting a White-Red-Green-Blue (WRGB) color filter array into a Red-Green-Blue (RGB) color filter array in order to be easily applied to a commercial digital camera. The method includes (a) correcting a color of a White-Red-Green-Blue (WRGB) color filter array, (b) converting the WRGB color filter array into a Red-Green-Blue (RGB) color filter array, and (c) correcting a green of the RGB color filter array by using multichannel color difference value.
    Type: Grant
    Filed: March 3, 2016
    Date of Patent: August 28, 2018
    Assignees: SK Hynix Inc., Industry-University Cooperation Foundation Hanyang University
    Inventors: Jong Wha Chong, Jong Joo Park, Sang Woo Ahn
  • Patent number: 9870601
    Abstract: An apparatus and a method for displaying a panoramic image using a look-up table (LUT) are disclosed, including generating an LUT may include determining first geometric correction information to transform an input domain pixel coordinate system of an input image to a panorama domain pixel coordinate system of a panoramic image, determining second geometric correction information to transform an output domain pixel coordinate system of an output image of the panoramic image to the panorama domain pixel coordinate system of the panoramic image, determining third geometric correction information to transform the output domain pixel coordinate system of the output image to the input domain pixel coordinate system of the input image based on the first geometric correction information and second geometric correction information, and generating an LUT that maps the output domain pixel coordinate system of the output image to the input domain pixel coordinate system of the input image.
    Type: Grant
    Filed: April 4, 2016
    Date of Patent: January 16, 2018
    Assignees: Electronics and Telecommunications Research Institute, National University of Sciences & Technology
    Inventors: Yong Ju Cho, Joo Myoung Seok, Sang Woo Ahn, Ji Hun Cha, Arshad Ali, Muhammad Murtaza, Rehan Hafiz, Ashar Rasul, Saleh Saeed, Muhammad Umer Kakli
  • Patent number: 9842273
    Abstract: Provided is an apparatus and method for detecting a key point using a high-order Laplacian of Gaussian (LoG) kernel. The high-order LoG kernel is generated based on an LoG operator which is calculated by sequentially differentiating an LoG operator with respect to x and y of an image. A scale space is generated based on the high-order LoG kernel and the key point is detected by comparing a current pixel in the scale space to pixels adjacent to the current pixel.
    Type: Grant
    Filed: March 9, 2016
    Date of Patent: December 12, 2017
    Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Yong Ju Cho, Unsang Park, Joo Myoung Seok, Sang Woo Ahn, Ji Hun Cha
  • Publication number: 20170223077
    Abstract: A method of receiving content in a client is provided. The method may include receiving, from a server, a spatial set identifier (ID) corresponding to a tile group including at least one tile, sending, to the server, a request for first content corresponding to metadata, and receiving, from the server, the first content corresponding to the request.
    Type: Application
    Filed: April 14, 2017
    Publication date: August 3, 2017
    Applicant: Electronics and Telecommunications Research Institute
    Inventors: Seong Yong LIM, Joo Myoung SEOK, Sang Woo AHN, Yong Ju CHO, Ji Hun CHA
  • Patent number: 9628528
    Abstract: A method of receiving content in a client is provided. The method may include receiving, from a server, a spatial set identifier (ID) corresponding to a tile group including at least one tile, sending, to the server, a request for first content corresponding to metadata, and receiving, from the server, the first content corresponding to the request.
    Type: Grant
    Filed: July 17, 2014
    Date of Patent: April 18, 2017
    Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Seong Yong Lim, Joo Myoung Seok, Sang Woo Ahn, Yong Ju Cho, Ji Hun Cha
  • Patent number: 9628767
    Abstract: The present specification is related to a method for performing multi-projection and a multi-projection system for minimizing a black offset in a multi-projection environment. The present specification provides the method for performing multi-projection comprising estimating the intensity transfer function (ITF) of a plurality of projectors, calculating an optimal black offset threshold for each of the projectors by using each of the ITFs, and applying the optimal black offset threshold to an image projection by each of the projectors.
    Type: Grant
    Filed: July 3, 2014
    Date of Patent: April 18, 2017
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Yong Ju Cho, Sang Woo Ahn, Joo Myoung Seok, Seong Yong Lim, Ji Hun Cha
  • Publication number: 20170098296
    Abstract: Provided are a method and a device for converting a White-Red-Green-Blue (WRGB) color filter array into a Red-Green-Blue (RGB) color filter array in order to be easily applied to a commercial digital camera. The method includes (a) correcting a color of a White-Red-Green-Blue (WRGB) color filter array, (b) converting the WRGB color filter array into a Red-Green-Blue (RGB) color filter array, and (c) correcting a green of the RGB color filter array by using multichannel color difference value.
    Type: Application
    Filed: March 3, 2016
    Publication date: April 6, 2017
    Inventors: Jong Wha CHONG, Jong Joo PARK, Sang Woo AHN
  • Publication number: 20160292821
    Abstract: An apparatus and a method for displaying a panoramic image using a look-up table (LUT) are disclosed, including generating an LUT may include determining first geometric correction information to transform an input domain pixel coordinate system of an input image to a panorama domain pixel coordinate system of a panoramic image, determining second geometric correction information to transform an output domain pixel coordinate system of an output image of the panoramic image to the panorama domain pixel coordinate system of the panoramic image, determining third geometric correction information to transform the output domain pixel coordinate system of the output image to the input domain pixel coordinate system of the input image based on the first geometric correction information and second geometric correction information, and generating an LUT that maps the output domain pixel coordinate system of the output image to the input domain pixel coordinate system of the input image.
    Type: Application
    Filed: April 4, 2016
    Publication date: October 6, 2016
    Inventors: Yong Ju CHO, Joo Myoung SEOK, Sang Woo AHN, Ji Hun CHA, Arshad ALI, Muhammad MURTAZA, Rehan HAFIZ, Ashar RASUL, Saleh SAEED, Muhammad Umer KAKLI
  • Patent number: 9460351
    Abstract: An image processing apparatus using a smart glass is provided, the image processing apparatus including an extractor to extract a first target to be observed by a user from a first image received from the smart glass and generate a second image using the extracted first target, an information collector to collect information related to the first target, and an image generator to reconstruct a third image using at least one of the second image and the information related to the first target, based on user settings.
    Type: Grant
    Filed: September 24, 2013
    Date of Patent: October 4, 2016
    Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Kwi Hoon Kim, Woong Shik You, Jae Hwui Bae, Sang Woo Ahn, O Hyung Kwon
  • Publication number: 20160267347
    Abstract: Provided is an apparatus and method for detecting a key point using a high-order Laplacian of Gaussian (LoG) kernel, wherein the method includes generating the high-order LoG kernel using an LoG operator, and detecting a key point of an image using the high-order LoG kernel.
    Type: Application
    Filed: March 9, 2016
    Publication date: September 15, 2016
    Applicant: Electronics and Telecommunications Research Institute
    Inventors: Yong Ju CHO, Unsang PARK, Joo Myoung SEOK, Sang Woo AHN, Ji Hun CHA
  • Publication number: 20160212338
    Abstract: Disclosed are a method and an apparatus for generating a panoramic image based on an image quality. The method of generating a panoramic image includes extracting a matching point to connect a base image captured by a first camera and a reference image captured by a second camera, geometrically transforming the reference image by determining a homography between the base image and the reference image, determining a change in image quality of the geometrically transformed reference image, and generating a panoramic image in which the geometrically transformed reference image is connected to the base image based on the determined change in image quality.
    Type: Application
    Filed: January 13, 2016
    Publication date: July 21, 2016
    Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Joo Myoung SEOK, Sang Woo AHN, Yong Ju CHO, Ji Hun CHA