Patents by Inventor Choul-Woo Shin
Choul-Woo Shin 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: 20240050059Abstract: A radiographic device includes a radiation irradiator; an image acquisition unit; a support member; a driving unit driving the support member; a position information detector which detects location information indicating the location of one or more of the radiation irradiator and the image acquisition unit; a storage unit which links reference location information, indicating the location of one or more of the radiation irradiator and the image acquisition unit, with corresponding radiation output information of the radiation irradiator, and stores same as positioning information; and a determination controller which, if the location information detected by the position information detector matches with the reference location information of the positioning information, controls the radiation irradiator so that the radiation irradiator emits radiation according to the radiation output information of the corresponding positioning information.Type: ApplicationFiled: December 24, 2021Publication date: February 15, 2024Applicant: DRTECH CORPORATIONInventors: Choul Woo SHIN, Won Taek SEO, Chang Gyu LEE, Jong Woo KIM, Cheon Kyung SUNG
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Publication number: 20230385989Abstract: An image processing apparatus is configured to perform noise reduction on an image obtained by radiography in a recursive way includes: an image input unit receiving frame-by-frame images obtained by the radiography; a motion detection image generating unit configured to generate a motion detection image comprising motion detection information for each pixel of a subtraction image obtained by a subtraction of a current frame image and a previous frame image; a motion probability image generating unit configured to generate a motion probability image based on the generated motion detection image and the motion detection image accumulated up to a previous frame; and an output image generating unit configured to generate an output image of a current frame by mixing the current frame image and the output image of the previous frame based on the motion probability image.Type: ApplicationFiled: February 3, 2023Publication date: November 30, 2023Applicant: DRTECH CORPORATIONInventors: June Kyu PARK, Choul Woo SHIN, Young Gi YU
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Publication number: 20230325993Abstract: An X-ray imaging device includes an X-ray irradiation module, an X-ray detection module and an image processor. The image processor is configured to perform: acquiring a high-energy image and a low-energy image respectively obtained by X-ray of relatively high-energy and X-ray of relatively low-energy; generating high-energy frequency component images for each of a plurality of frequency bands by decomposing the high-energy image; generating low-energy frequency component images for each of a plurality of frequency bands by decomposing the low-energy image; generating merged frequency component images by merging at least a portion of the high-energy frequency component images for each of the plurality of frequency bands and at least a portion of the low-energy frequency component images for each of the plurality of frequency bands; and generating a standard image using the merged frequency component images.Type: ApplicationFiled: September 1, 2022Publication date: October 12, 2023Applicant: DRTECH CORPORATIONInventors: IL WOONG CHOI, Choul Woo SHIN, Mi Jung JO, Won Taek SEO
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Patent number: 11442029Abstract: Provided is a radiation detector including a radiation detecting unit, a gate module controlling a gate line, a readout module reading out charges stored in an exposure detection pixel determined by a data line and the gate line, and an auto exposure detecting unit determining whether the radiation detecting unit is exposed to a radiation.Type: GrantFiled: October 23, 2015Date of Patent: September 13, 2022Inventors: Choul Woo Shin, Won Chul Ko, Sung Hoon Lim, Jin Hyun Choi
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Patent number: 11246553Abstract: A radiographic apparatus generates images of objects of interest, such as subject body parts, using radiation. The radiographic apparatus includes a radiation irradiating unit having a plurality of radiation sources, where each of the plurality of radiation sources irradiates the object of interest, a driving unit for moving the radiation irradiating unit, and a radiation detector for detecting the radiation passing through the objects of interest from each of the plurality of radiation sources.Type: GrantFiled: December 1, 2017Date of Patent: February 15, 2022Inventors: Sang Il Lee, Eung Bum Kim, Choul Woo Shin
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Patent number: 11058374Abstract: The present invention proposes a radiation detector including a housing, a radiation detection panel accommodated in the housing and converting radiation incident from the outside of the housing into an electric signal, a printed circuit board electrically connected to the radiation detection panel and an intermediate plate that is disposed between the radiation detection panel and the printed circuit board, supports the radiation detection panel, and is electrically connected to the ground line of the printed circuit board, wherein the intermediate plate is transmissive to the radiation.Type: GrantFiled: November 24, 2015Date of Patent: July 13, 2021Inventors: Seung Zoo Han, Jin Hyun Choi, Choul Woo Shin, Jung Seok Kim, Young Jong Oh, Jae Dong Lee
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Publication number: 20210106291Abstract: The present inventive concept relates to a radiography apparatus and a radiography method using the same and, more particularly, to a radiography apparatus for capturing an image of an object by using radiation, and a radiography method using the same. The radiography apparatus according to an embodiment of the present inventive concept includes: a radiation emitting unit for emitting radiation to an object; a driving unit for moving the radiation emitting unit; a radiation detection unit for detecting radiation emitted from each of a plurality of imaging positions provided at each of imaging angle with respect to the object, so as to acquire a plurality of radiation images; and a plurality of radiation sources provided in the radiation emitting unit, such that, according to the movement of the radiation emitting unit, at least one thereof is arranged at one imaging position and at least one thereof is arranged at a position spaced apart from each imaging position.Type: ApplicationFiled: January 5, 2018Publication date: April 15, 2021Inventors: Choul Woo SHIN, Jae Dong LEE, Byung Min YU
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Publication number: 20190388050Abstract: The present invention relates to a radiographic apparatus and a radiographic method using the same. More particularly, the present invention relates to the radiographic apparatus for generating an image of an object using radiation and a radiographic method using the same. According to an embodiment of the present invention, the radiographic apparatus includes: a radiation irradiating unit having a plurality of radiation sources and irradiating the object with radiation emitted from each of the plurality of radiation sources; a driving unit for moving the radiation irradiating unit; and a radiation detector for detecting the radiation passing through the object to acquire a plurality of radiation images.Type: ApplicationFiled: December 1, 2017Publication date: December 26, 2019Inventors: Sang Il LEE, Eung Bum KIM, Choul Woo SHIN
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Patent number: 9916656Abstract: Provided is a method for processing a radiographic image including obtaining a radiographic image using an indirect radiographic detector comprising a scintillator panel and a pixel array panel, determining a parameter value for defining a point spread function (PSF) according to the scintillator panel or the pixel array panel, and correcting the radiographic image by deconvoluting the radiographic image using the PSF to which the parameter value is applied.Type: GrantFiled: October 23, 2015Date of Patent: March 13, 2018Assignee: DRTECH CORPInventors: Ho Yeol Choi, Choul Woo Shin, Mi Jung Jo, Eun Kim, Jeong Pil Kim, Yong Ju Na
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Publication number: 20170281103Abstract: The present invention proposes a radiation detector including a housing, a radiation detection panel accommodated in the housing and converting radiation incident from the outside of the housing into an electric signal, a printed circuit board electrically connected to the radiation detection panel and an intermediate plate that is disposed between the radiation detection panel and the printed circuit board, supports the radiation detection panel, and is electrically connected to the ground line of the printed circuit board, wherein the intermediate plate is transmissive to the radiation.Type: ApplicationFiled: November 24, 2015Publication date: October 5, 2017Inventors: Seung Zoo HAN, Jin Hyun CHOI, Choul Woo SHIN, Jung Seok KIM, Young Jong OH, Jae Dong LEE
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Publication number: 20170262976Abstract: Provided is a method for processing a radiographic image including obtaining a radiographic image using an indirect radiographic detector comprising a scintillator panel and a pixel array panel, determining a parameter value for defining a point spread function (PSF) according to the scintillator panel or the pixel array panel, and correcting the radiographic image by deconvoluting the radiographic image using the PSF to which the parameter value is applied.Type: ApplicationFiled: October 23, 2015Publication date: September 14, 2017Inventors: Ho Yeol CHOI, Choul Woo SHIN, Mi Jung JO, Eun KIM, Jeong Pil KIM, Yong Ju NA
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Publication number: 20170227475Abstract: Provided is a radiation detector including a radiation detecting unit, a gate module controlling a gate line, a readout module reading out charges stored in an exposure detection pixel determined by a data line and the gate line, and an auto exposure detecting unit determining whether the radiation detecting unit is exposed to a radiation.Type: ApplicationFiled: October 23, 2015Publication date: August 10, 2017Inventors: Choul Woo SHIN, Won Chul KO, Sung Hoon LIM, Jin Hyun CHOI
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Patent number: 6800585Abstract: Disclosed are a catalyst for selective catalytic reduction of nitrogen oxides and a method for preparing the same. Useful for the removal of nitrogen oxides is a catalyst prepared using spent catalysts having been absorbed with vanadium, nickel and sulfur in the hydro-desulfurization line of an oil refinery in which a catalyst for the hydro-desulfurization contains molybdenum, iron, cobalt and silicon on the alumina support in accordance with the present invention. The present catalyst can remove nitrogen oxides at a level of 90% or higher, exhibiting a 10% or more increase in efficiency of the catalyst performance. Additionally, the catalyst can increase the efficiency of spent catalyst reclamation by 250%.Type: GrantFiled: July 31, 2003Date of Patent: October 5, 2004Assignee: SK CorporationInventors: Kyung-Ii Choi, Sang-Ho Lee, Choul-Woo Shin, Jun-Seong Ahn, Bong-Jea Kim
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Publication number: 20040053771Abstract: Disclosed are a catalyst for selective catalytic reduction of nitrogen oxides and a method for preparing the same. Useful for the removal of nitrogen oxides is a catalyst prepared using spent catalysts having been absorbed with vanadium, nickel and sulfur in the hydro-desulfurization line of an oil refinery in which a catalyst for the hydro-desulfurization contains molybdenum, iron, cobalt and silicon on the alumina support in accordance with the present invention. The present catalyst can remove nitrogen oxides at a level of 90% or higher, exhibiting a 10% or more increase in efficiency of the catalyst performance. Additionally, the catalyst can increase the efficiency of spent catalyst reclamation by 250%.Type: ApplicationFiled: July 31, 2003Publication date: March 18, 2004Inventors: Kyung-Il Choi, Sang-Ho Lee, Choul-Woo Shin, Jun-Seong Ahn, Bong-Jea Kim
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Patent number: 6673740Abstract: The catalyst is prepared by recycling a spent catalyst discharged from a hydro-desulfurization process of an oil refinery in which the spent catalyst comprises an alumina support with a large specific surface area impregnated with low contents of vanadium and high contents of molybdenum. The thus prepared catalyst has more excellent selective removal activity of nitrogen oxides at a high temperature window by containing suitable amounts of metal components therein as well as a better poisoning resistance to sulfur oxides, compared with the conventional catalysts.Type: GrantFiled: September 25, 2001Date of Patent: January 6, 2004Assignee: SK CorporationInventors: Kyung-Il Choi, Sang-Ho Lee, Choul-Woo Shin, Jun-Seong Ahn, Jong-Hyun Kim, Bong-Jea Kim
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Patent number: 6602818Abstract: Disclosed are a catalyst for selective catalytic reduction of nitrogen oxides and a method for preparing the same. The catalyst is prepared using a spent catalyst discharged from a hydro-desulfurization process of an oil refinery in which the spent catalyst comprises vanadium, nickel, molybdenum and sulfur component on alumina, and a tungsten-impregnated support. The catalyst prepared in accordance with the present invention is very advantageous in terms of excellent selective removal effect of nitrogen oxides as well as better poisoning resistance to sulfur oxides.Type: GrantFiled: September 25, 2001Date of Patent: August 5, 2003Assignee: SK CorporationInventors: Kyung-Il Choi, Sang-Ho Lee, Choul-Woo Shin, Jun-Seong Ahn
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Publication number: 20020061817Abstract: Disclosed is a method for preparing a catalyst for selective catalytic reduction of nitrogen oxides at high temperature window. The catalyst is prepared by recycling a spent catalyst discharged from a hydro-desulfurization process of an oil refinery in which the spent catalyst comprises an alumina support with a large specific surface area impregnated with low contents of vanadium and high contents of molybdenum. The thus prepared catalyst has more excellent selective removal activity of nitrogen oxides at a high temperature window by containing suitable amounts of metal components therein as well as a better poisoning resistance to sulfur oxides, compared with the conventional catalysts.Type: ApplicationFiled: September 25, 2001Publication date: May 23, 2002Inventors: Kyung-Il Choi, Sang-Ho Lee, Choul-Woo Shin, Jun-Seong Ahn, Jong-Hyun Kim, Bong-Jea Kim
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Publication number: 20020058586Abstract: Disclosed are a catalyst for selective catalytic reduction of nitrogen oxides and a method for preparing the same. The catalyst is prepared using a spent catalyst discharged from a hydro-desulfurization process of an oil refinery in which the spent catalyst comprises vanadium, nickel, molybdenum and sulfur component on alumina, and a tungsten-impregnated support. The catalyst prepared in accordance with the present invention is very advantageous in terms of excellent selective removal effect of nitrogen oxides as well as better poisoning resistance to sulfur oxides.Type: ApplicationFiled: September 25, 2001Publication date: May 16, 2002Inventors: Kyung-Il Choi, Sang-Ho Lee, Choul-Woo Shin, Jun-Seong Ahn
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Patent number: D771564Type: GrantFiled: March 24, 2015Date of Patent: November 15, 2016Assignee: DRTECH CORPInventors: Choul Woo Shin, Eun Hong Park, Cha Gun Gang, Sung Hoon Lim