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).
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Publication number: 20240076127Abstract: 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: ApplicationFiled: May 23, 2023Publication date: March 7, 2024Inventors: 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
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Patent number: 11893678Abstract: 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: GrantFiled: January 25, 2022Date of Patent: February 6, 2024Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTEInventors: Hyuk-Min Kwon, Hyun-Cheol Kim, Jeong-Il Seo, Sang-Woo Ahn, Seung-Jun Yang
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Publication number: 20220254095Abstract: 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: ApplicationFiled: January 25, 2022Publication date: August 11, 2022Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTEInventors: Hyuk-Min KWON, Hyun-Cheol KIM, Jeong-Il SEO, Sang-Woo AHN, Seung-Jun YANG
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Patent number: 11354854Abstract: 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: GrantFiled: February 9, 2021Date of Patent: June 7, 2022Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTEInventors: Hyun Cheol Kim, Hyuk Min Kwon, Jeong Il Seo, Sang Woo Ahn, Seung Jun Yang
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Publication number: 20210248815Abstract: 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: ApplicationFiled: February 9, 2021Publication date: August 12, 2021Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTEInventors: Hyun Cheol KIM, Hyuk Min KWON, Jeong Il SEO, Sang Woo AHN, Seung Jun YANG
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Patent number: 10826956Abstract: 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: GrantFiled: October 22, 2018Date of Patent: November 3, 2020Assignee: IDEAHUB INC.Inventors: Seong Yong Lim, Joo Myoung Seok, Sang Woo Ahn, Yong Ju Cho, Ji Hun Cha
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Publication number: 20190052688Abstract: 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: ApplicationFiled: October 22, 2018Publication date: February 14, 2019Applicant: Electronics and Telecommunications Research InstituteInventors: Seong Yong LIM, Joo Myoung SEOK, Sang Woo AHN, Yong Ju CHO, Ji Hun CHA
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Patent number: 10122778Abstract: 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: GrantFiled: April 14, 2017Date of Patent: November 6, 2018Assignee: IDEAHUBInventors: Seong Yong Lim, Joo Myoung Seok, Sang Woo Ahn, Yong Ju Cho, Ji Hun Cha
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Patent number: 10075635Abstract: 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: GrantFiled: January 13, 2016Date of Patent: September 11, 2018Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTEInventors: Joo Myoung Seok, Sang Woo Ahn, Yong Ju Cho, Ji Hun Cha
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Patent number: 10062148Abstract: 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: GrantFiled: March 3, 2016Date of Patent: August 28, 2018Assignees: SK Hynix Inc., Industry-University Cooperation Foundation Hanyang UniversityInventors: Jong Wha Chong, Jong Joo Park, Sang Woo Ahn
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Patent number: 9870601Abstract: 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: GrantFiled: April 4, 2016Date of Patent: January 16, 2018Assignees: Electronics and Telecommunications Research Institute, National University of Sciences & TechnologyInventors: 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
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Patent number: 9842273Abstract: 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: GrantFiled: March 9, 2016Date of Patent: December 12, 2017Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTEInventors: Yong Ju Cho, Unsang Park, Joo Myoung Seok, Sang Woo Ahn, Ji Hun Cha
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Publication number: 20170223077Abstract: 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: ApplicationFiled: April 14, 2017Publication date: August 3, 2017Applicant: Electronics and Telecommunications Research InstituteInventors: Seong Yong LIM, Joo Myoung SEOK, Sang Woo AHN, Yong Ju CHO, Ji Hun CHA
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Patent number: 9628528Abstract: 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: GrantFiled: July 17, 2014Date of Patent: April 18, 2017Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTEInventors: Seong Yong Lim, Joo Myoung Seok, Sang Woo Ahn, Yong Ju Cho, Ji Hun Cha
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Patent number: 9628767Abstract: 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: GrantFiled: July 3, 2014Date of Patent: April 18, 2017Assignee: Electronics and Telecommunications Research InstituteInventors: Yong Ju Cho, Sang Woo Ahn, Joo Myoung Seok, Seong Yong Lim, Ji Hun Cha
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Publication number: 20170098296Abstract: 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: ApplicationFiled: March 3, 2016Publication date: April 6, 2017Inventors: Jong Wha CHONG, Jong Joo PARK, Sang Woo AHN
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Publication number: 20160292821Abstract: 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: ApplicationFiled: April 4, 2016Publication date: October 6, 2016Inventors: 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
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Patent number: 9460351Abstract: 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: GrantFiled: September 24, 2013Date of Patent: October 4, 2016Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTEInventors: Kwi Hoon Kim, Woong Shik You, Jae Hwui Bae, Sang Woo Ahn, O Hyung Kwon
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Publication number: 20160267347Abstract: 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: ApplicationFiled: March 9, 2016Publication date: September 15, 2016Applicant: Electronics and Telecommunications Research InstituteInventors: Yong Ju CHO, Unsang PARK, Joo Myoung SEOK, Sang Woo AHN, Ji Hun CHA
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Publication number: 20160212338Abstract: 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: ApplicationFiled: January 13, 2016Publication date: July 21, 2016Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTEInventors: Joo Myoung SEOK, Sang Woo AHN, Yong Ju CHO, Ji Hun CHA