Patents by Inventor Hyung-Sup Jung
Hyung-Sup Jung 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: 11543517Abstract: The present disclosure relates to a method and apparatus for phase unwrapping of an SAR interferogram based on an SAR offset tracking surface displacement model, in which the apparatus according to the present disclosure includes a Synthetic Aperture Radar (SAR) image acquisition unit that acquires two SAR images of a same object acquired at different times, a single look complex (SLC) image production unit that produces two SLC images corresponding to each of the two SAR images, an interferogram production unit that generates an SAR interferogram using SAR interferometry for the two SLC images, a surface displacement model production unit that produces an offset tracking surface displacement model using SAR offset tracking method for the two SLC images, an unwrapped residual interferogram generation unit that generates a residual interferogram by subtracting the SAR interferogram and the offset tracking surface displacement model, and generates an unwrapped residual interferogram by unwrapping the generatedType: GrantFiled: August 12, 2019Date of Patent: January 3, 2023Assignee: University of Seoul Industry Cooperation FoundationInventors: Hyung-Sup Jung, Won-Kyung Baek, Sung-Ho Chae
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Patent number: 11244461Abstract: The present invention relates to an apparatus and method for detecting an oil spill by using a satellite image, an apparatus for detecting an oil spill by using a satellite image, the apparatus including: a satellite image reception unit configured to receive a satellite image of a predicted oil spill area; a satellite image correction unit configured to correct the satellite image by compensating for the influences of the atmosphere and waves; a spectral angle mapper image generation unit configured to generate a spectral angle mapper image; a spectral vector distance image generation unit configured to generate a spectral vector distance image; and an oil spill area detection unit configured to derive the range of the oil spill area by combining the spectral angle mapper image and the spectral vector distance image together.Type: GrantFiled: December 18, 2018Date of Patent: February 8, 2022Assignee: Univ. of Seoul Industry Cooperation FoundationInventors: Hyung Sup Jung, Sung Hwan Park, Sung Ho Chae
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Publication number: 20210033726Abstract: The present disclosure relates to a method and apparatus for phase unwrapping of an SAR interferogram based on an SAR offset tracking surface displacement model, in which the apparatus according to the present disclosure includes a Synthetic Aperture Radar (SAR) image acquisition unit that acquires two SAR images of a same object acquired at different times, a single look complex (SLC) image production unit that produces two SLC images corresponding to each of the two SAR images, an interferogram production unit that generates an SAR interferogram using SAR interferometry for the two SLC images, a surface displacement model production unit that produces an offset tracking surface displacement model using SAR offset tracking method for the two SLC images, an unwrapped residual interferogram generation unit that generates a residual interferogram by subtracting the SAR interferogram and the offset tracking surface displacement model, and generates an unwrapped residual interferogram by unwrapping the generatedType: ApplicationFiled: August 12, 2019Publication date: February 4, 2021Applicant: University of Seoul Industry Cooperation FoundationInventors: Hyung-Sup JUNG, Won-Kyung BAEK, Sung-Ho CHAE
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Patent number: 10337925Abstract: A method of estimating land surface temperature lapse rate using an infrared image is disclosed. In the method of estimating land surface temperature lapse rate using an infrared image, a target area for the estimation of land surface temperature lapse rate is selected. The atmospheric transmittance of the target area is calculated. Reference temperature is estimated at a reference location set in the target area as desired. A temperature difference is calculated from the atmospheric transmittance and the estimated reference temperature, and then a temperature difference image is generated. Land surface temperature lapse rate is estimated from the temperature difference image and a Digital Elevation Map (DEM) in an identical area using an elevation-based temperature difference distribution.Type: GrantFiled: December 11, 2015Date of Patent: July 2, 2019Assignee: University of Seoul Cooperation FoundationInventors: Hyung Sup Jung, Sung Hwan Park
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Publication number: 20190122369Abstract: The present invention relates to an apparatus and method for detecting an oil spill by using a satellite image, an apparatus for detecting an oil spill by using a satellite image, the apparatus including: a satellite image reception unit configured to receive a satellite image of a predicted oil spill area; a satellite image correction unit configured to correct the satellite image by compensating for the influences of the atmosphere and waves; a spectral angle mapper image generation unit configured to generate a spectral angle mapper image; a spectral vector distance image generation unit configured to generate a spectral vector distance image; and an oil spill area detection unit configured to derive the range of the oil spill area by combining the spectral angle mapper image and the spectral vector distance image together.Type: ApplicationFiled: December 18, 2018Publication date: April 25, 2019Inventors: Hyung Sup Jung, Sung Hwan Park, Sung Ho Chae
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Patent number: 10235746Abstract: Disclosed herein are a method and apparatus for fusing a panchromatic image and an infrared image. The apparatus includes: an image acquisition unit configured to acquire a panchromatic image and an infrared image having the same coordinate system; a filtering unit configured to generate a low-frequency panchromatic image by performing low-frequency filtering on the panchromatic image, and to generate a high-frequency panchromatic image by subtracting the low-frequency panchromatic image from the panchromatic image; an image correction unit configured to generate a corrected high-frequency panchromatic image, to construct a linear regression equation, and to generate a corrected infrared image by using the constructed linear regression equation; a scaling factor determination unit configured to determine the ratio at which the panchromatic image and the infrared image are fused together; and a fused image generation unit configured to generate a fused image through multiplication and addition.Type: GrantFiled: June 2, 2017Date of Patent: March 19, 2019Assignee: University of Seoul Industry Cooperation FoundationInventors: Hyung Sup Jung, Sung Hwan Park
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Patent number: 10006995Abstract: An apparatus and method for stacking multi-temporal MAI interferograms Disclosed are disclosed herein. The apparatus includes a processor configured to: generate a forward-looking InSAR (Interferometric Synthetic Aperture Radar) interferogram and a backward-looking InSAR interferogram of multi-temporal interferometric pairs; generate a residual forward-looking interferogram and a residual backward-looking interferogram by removing low-frequency phase components from the forward-looking InSAR interferogram and the backward-looking InSAR interferogram; generate a stacked forward-looking interferogram and a stacked backward-looking interferogram by separately stacking the residual forward-looking interferogram and the residual backward-looking interferogram; and generate a stacked MAI interferogram based on a phase difference between the stacked forward-looking interferogram and the stacked backward-looking interferogram.Type: GrantFiled: August 4, 2015Date of Patent: June 26, 2018Assignee: University of Seoul Industry Cooperation FoundationInventors: Hyung Sup Jung, Min-Jeong Jo
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Patent number: 9971030Abstract: An apparatus and method for correcting the ionospheric distortion of an SAR (Synthetic Aperture Radar) interferogram are disclosed herein. The apparatus includes a multiple aperture SAR interferometry (MAI) interferogram generation unit, a transformed MAI interferogram generation unit, an ionospheric distortion interferogram generation unit, and a corrected SAR interferogram acquisition unit. The multiple aperture SAR interferometry (MAI) interferogram generation unit generates a multiple aperture SAR interferometry (MAI) interferogram using an SAR interferogram. The transformed MAI interferogram generation unit generates a transformed MAI interferogram representative of the azimuth direction derivatives of ionospheric distortion phases using the phases of the MAI interferogram. The ionospheric distortion interferogram generation unit generates an ionospheric distortion interferogram using the transformed MAI interferogram.Type: GrantFiled: June 29, 2015Date of Patent: May 15, 2018Assignees: University of Seoul Industry Cooperation Foundation, Republic of Korea (National Disaster Management Institute)Inventors: Hyung Sup Jung, Dong Taek Lee, Zhong Lu, Joong Sun Won, Young Jin Park, Jae Won Choi, Shin Hoi Goo
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Publication number: 20170358067Abstract: Disclosed herein are a method and apparatus for fusing a panchromatic image and an infrared image. The apparatus includes: an image acquisition unit configured to acquire a panchromatic image and an infrared image having the same coordinate system; a filtering unit configured to generate a low-frequency panchromatic image by performing low-frequency filtering on the panchromatic image, and to generate a high-frequency panchromatic image by subtracting the low-frequency panchromatic image from the panchromatic image; an image correction unit configured to generate a corrected high-frequency panchromatic image, to construct a linear regression equation, and to generate a corrected infrared image by using the constructed linear regression equation; a scaling factor determination unit configured to determine the ratio at which the panchromatic image and the infrared image are fused together; and a fused image generation unit configured to generate a fused image through multiplication and addition.Type: ApplicationFiled: June 2, 2017Publication date: December 14, 2017Inventors: Hyung Sup Jung, Sung Hwan Park
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Patent number: 9378585Abstract: The present invention relates to a technique for correcting a geometric image error calculated as a rational polynomial coefficient (RPC) only through a corresponding point extracted from a digital elevation model (DEM) and a stereoscopic image without direct measurement of a ground control point (GCP). To this end, a system for automatic geometric correction using an RPC in accordance with the present invention comprises: an auxiliary data extraction unit; a corresponding point extraction unit; a first ground coordinate extraction unit; a second ground coordinate extraction unit; an RPC correction model generation unit; and an image distortion correction unit. The auxiliary data extraction unit extracts two or more different images captured from the same ground surface and auxiliary data of the two or more different images. The corresponding point extraction unit extracts a corresponding point from the two or more different images through image matching.Type: GrantFiled: October 24, 2014Date of Patent: June 28, 2016Assignee: University of Seoul Industry Cooperation FoundationInventors: Hyung Sup Jung, Kwan Young Oh
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Publication number: 20160097679Abstract: A method of estimating land surface temperature lapse rate using an infrared image is disclosed. In the method of estimating land surface temperature lapse rate using an infrared image, a target area for the estimation of land surface temperature lapse rate is selected. The atmospheric transmittance of the target area is calculated. Reference temperature is estimated at a reference location set in the target area as desired. A temperature difference is calculated from the atmospheric transmittance and the estimated reference temperature, and then a temperature difference image is generated. Land surface temperature lapse rate is estimated from the temperature difference image and a Digital Elevation Map (DEM) in an identical area using an elevation-based temperature difference distribution.Type: ApplicationFiled: December 11, 2015Publication date: April 7, 2016Inventors: Hyung Sup Jung, Sung Hwan Park
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Publication number: 20160033639Abstract: An apparatus and method for stacking multi-temporal MAI interferograms Disclosed are disclosed herein. The apparatus includes a processor configured to: generate a forward-looking InSAR (Interferometric Synthetic Aperture Radar) interferogram and a backward-looking InSAR interferogram of multi-temporal interferometric pairs; generate a residual forward-looking interferogram and a residual backward-looking interferogram by removing low-frequency phase components from the forward-looking InSAR interferogram and the backward-looking InSAR interferogram; generate a stacked forward-looking interferogram and a stacked backward-looking interferogram by separately stacking the residual forward-looking interferogram and the residual backward-looking interferogram; and generate a stacked MAI interferogram based on a phase difference between the stacked forward-looking interferogram and the stacked backward-looking interferogram.Type: ApplicationFiled: August 4, 2015Publication date: February 4, 2016Inventors: Hyung Sup Jung, Min-Jeong Jo
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Publication number: 20150369913Abstract: An apparatus and method for correcting the ionospheric distortion of an SAR (Synthetic Aperture Radar) interferogram are disclosed herein. The apparatus includes a multiple aperture SAR interferometry (MAI) interferogram generation unit, a transformed MAI interferogram generation unit, an ionospheric distortion interferogram generation unit, and a corrected SAR interferogram acquisition unit. The multiple aperture SAR interferometry (MAI) interferogram generation unit generates a multiple aperture SAR interferometry (MAI) interferogram using an SAR interferogram. The transformed MAI interferogram generation unit generates a transformed MAI interferogram representative of the azimuth direction derivatives of ionospheric distortion phases using the phases of the MAI interferogram. The ionospheric distortion interferogram generation unit generates an ionospheric distortion interferogram using the transformed MAI interferogram.Type: ApplicationFiled: June 29, 2015Publication date: December 24, 2015Inventors: Hyung Sup Jung, Dong Taek Lee, Zhong Lu, Joong Sun Woon, Young Jin Park, Jae Won Choi, Shin Hoi Goo
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Publication number: 20150042648Abstract: The present invention relates to a technique for correcting a geometric image error calculated as a rational polynomial coefficient (RPC) only through a corresponding point extracted from a digital elevation model (DEM) and a stereoscopic image without direct measurement of a ground control point (GCP). To this end, a system for automatic geometric correction using an RPC in accordance with the present invention comprises: an auxiliary data extraction unit; a corresponding point extraction unit; a first ground coordinate extraction unit; a second ground coordinate extraction unit; an RPC correction model generation unit; and an image distortion correction unit. The auxiliary data extraction unit extracts two or more different images captured from the same ground surface and auxiliary data of the two or more different images. The corresponding point extraction unit extracts a corresponding point from the two or more different images through image matching.Type: ApplicationFiled: October 24, 2014Publication date: February 12, 2015Inventors: Hyung Sup Jung, Kwan Young Oh
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Patent number: 7778534Abstract: The present invention relates to a method and apparatus that obtain error correction data by adjusting the LOS vector of a sensor, and assign precise ground coordinates to respective image coordinates of an image using the error correction data and auxiliary data for the image. In the method of correcting geometry of an image using a LOS vector adjustment model of the present invention, an image, obtained by photographing a ground surface, and auxiliary data for the image, are acquired. Ground coordinates for a ground control point, and image coordinates of the image matching the ground coordinates are acquired. A LOS vector of a sensor of a photographing device is adjusted, thus obtaining error correction data. The auxiliary data and the error correction data are applied to LOS vector adjustment models, and ground coordinates are assigned to respective image coordinates of the image, thus performing exterior orientation.Type: GrantFiled: December 27, 2007Date of Patent: August 17, 2010Assignee: Industry-Academic Cooperation Foundation, Yonsei UniversityInventors: Joong-Sun Won, Hyung-Sup Jung
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Publication number: 20080123990Abstract: The present invention relates to a method and apparatus that obtain error correction data by adjusting the LOS vector of a sensor, and assign precise ground coordinates to respective image coordinates of an image using the error correction data and auxiliary data for the image. In the method of correcting geometry of an image using a LOS vector adjustment model of the present invention, an image, obtained by photographing a ground surface, and auxiliary data for the image, are acquired. Ground coordinates for a ground control point, and image coordinates of the image matching the ground coordinates are acquired. A LOS vector of a sensor of a photographing device is adjusted, thus obtaining error correction data. The auxiliary data and the error correction data are applied to LOS vector adjustment models, and ground coordinates are assigned to respective image coordinates of the image, thus performing exterior orientation.Type: ApplicationFiled: December 27, 2007Publication date: May 29, 2008Applicant: Industry-Academic Cooperation Foundation, Yonsei UniversityInventors: Joong-Sun WON, Hyung-Sup Jung