Patents by Inventor Young-Mi Cha
Young-Mi Cha 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: 20190313082Abstract: An apparatus and method for measuring the position of a stereo camera. The apparatus for measuring a position of the camera according to an embodiment includes a feature point extraction unit for extracting feature points from images captured by a first camera and a second camera and generating a first feature point list based on the feature points, a feature point recognition unit for extracting feature points from images captured by the cameras after the cameras have moved, generating a second feature point list based on the feature points, and recognizing actual feature points based on the first feature point list and the second feature point list, and a position variation measurement unit for measuring variation in positions of the cameras based on variation in relative positions of the actual feature points.Type: ApplicationFiled: June 5, 2019Publication date: October 10, 2019Inventors: Jae-Hean KIM, Hyun KANG, Soon-Chul JUNG, Young-Mi CHA, Jin-Sung CHOI
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Patent number: 10356394Abstract: An apparatus and method for measuring the position of a stereo camera. The apparatus for measuring a position of the camera according to an embodiment includes a feature point extraction unit for extracting feature points from images captured by a first camera and a second camera and generating a first feature point list based on the feature points, a feature point recognition unit for extracting feature points from images captured by the cameras after the cameras have moved, generating a second feature point list based on the feature points, and recognizing actual feature points based on the first feature point list and the second feature point list, and a position variation measurement unit for measuring variation in positions of the cameras based on variation in relative positions of the actual feature points.Type: GrantFiled: February 18, 2016Date of Patent: July 16, 2019Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTEInventors: Jae-Hean Kim, Hyun Kang, Soon-Chul Jung, Young-Mi Cha, Jin-Sung Choi
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Patent number: 9858684Abstract: An image processing apparatus and method for calibrating a depth of a depth sensor. The image processing method may include obtaining a depth image of a target object captured by a depth sensor and a color image of the target object captured by a color camera; and calibrating a depth of the depth sensor by calibrating a geometrical relation between a projector and a depth camera, which are included in the depth sensor, based the obtained depth and color images and calculating a correct feature point on an image plane of the depth camera that corresponds to a feature point of an image plane of the projector.Type: GrantFiled: July 28, 2014Date of Patent: January 2, 2018Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTEInventors: Jae-Hean Kim, Chang-Woo Chu, Young-Mi Cha, Jin-Sung Choi, Bon-Ki Koo
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Patent number: 9710963Abstract: A primitive fitting apparatus is provided. The primitive fitting apparatus may include a selecting unit to receive, from a user, a selection of points used to fit a primitive a user desires to fit from a point cloud, an identifying unit to receive a selection of the primitive from the user and to identify the selected primitive, and a fitting unit to fit the primitive to correspond to the points, using the points and primitive.Type: GrantFiled: February 28, 2014Date of Patent: July 18, 2017Assignee: Electronics and Telecommunications Research InstituteInventors: Young Mi Cha, Chang Woo Chu, Jae Hean Kim, Il Kyu Park, Bon Ki Koo, Jin Sung Choi
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Patent number: 9619892Abstract: Provided is an apparatus and method for extracting a movement path, the movement path extracting apparatus including an image receiver to receive an image from a camera group in which a mutual positional relationship among cameras is fixed, a geographic coordinates receiver to receive geographic coordinates of a moving object on which the camera group is fixed, and a movement path extractor to extract a movement path of the camera group based on a direction and a position of a reference camera of the camera group using the image and the geographic coordinates.Type: GrantFiled: May 6, 2014Date of Patent: April 11, 2017Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTEInventors: Chang Woo Chu, Jae Hean Kim, Il Kyu Park, Young Mi Cha, Jin Sung Choi, Bon Ki Koo
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Patent number: 9613457Abstract: Provided are a multi-primitive fitting method including an acquiring point cloud data by collecting data of each of input points, a obtaining a segment for the points using the point cloud data, and a performing primitive fitting using data of points included in the segment and the point cloud data, and a multi-primitive fitting device that performs the method.Type: GrantFiled: January 28, 2015Date of Patent: April 4, 2017Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTEInventors: Young Mi Cha, Chang Woo Chu, Jae Hean Kim
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Publication number: 20160379354Abstract: An apparatus and method for measuring the position of a stereo camera. The apparatus for measuring a position of the camera according to an embodiment includes a feature point extraction unit for extracting feature points from images captured by a first camera and a second camera and generating a first feature point list based on the feature points, a feature point recognition unit for extracting feature points from images captured by the cameras after the cameras have moved, generating a second feature point list based on the feature points, and recognizing actual feature points based on the first feature point list and the second feature point list, and a position variation measurement unit for measuring variation in positions of the cameras based on variation in relative positions of the actual feature points.Type: ApplicationFiled: February 18, 2016Publication date: December 29, 2016Inventors: Jae-Hean KIM, Hyun KANG, Soon-Chul JUNG, Young-Mi CHA, Jin-Sung CHOI
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Publication number: 20160364905Abstract: An apparatus and method for generating a 3D model, in which point clouds from a scanner are automatically aligned using marker information, with markers attached to an object. The apparatus includes a point cloud refinement unit for receiving point clouds and marker sets from scanning of an object, refining the point clouds, and transmitting refined point clouds and marker sets, a point cloud alignment unit for inquiring of a point cloud and marker set database about a point cloud group of point cloud pairs and a marker set group of marker set pairs, and aligning the point cloud group, wherein the point cloud pairs and the marker set pairs are acquired by scanning a single object in different directions, and a surface generation unit for generating a 3D model by reconstructing a surface of the object based on the aligned point cloud group.Type: ApplicationFiled: February 17, 2016Publication date: December 15, 2016Inventors: Soon-Chul JUNG, Hyun KANG, Jae-Hean KIM, Young-Mi CHA, Jin-Sung CHOI
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Patent number: 9390330Abstract: Disclosed herein is an apparatus and method for extracting correspondences between aerial images. The apparatus includes a line extraction unit, a line direction determination unit, a building top area extraction unit, and a correspondence extraction unit. The line extraction unit extracts lines corresponding buildings from aerial images. The line direction determination unit defines the directions of the lines as x, y and z axis directions based on a two-dimensional (2D) coordinate system. The building top area extraction unit rotates lines in the x and y axis directions so that the lines are arranged in parallel with the horizontal and vertical directions of the 2D image, and then extracts building top areas from rectangles. The correspondence extraction unit extracts correspondences between the aerial images by comparing the locations of the building top areas extracted from the aerial images.Type: GrantFiled: December 14, 2011Date of Patent: July 12, 2016Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTEInventors: Il-Kyu Park, Chang-Woo Chu, Young-Mi Cha, Bon-Ki Koo
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Patent number: 9208607Abstract: Disclosed are an apparatus and a method of producing a 3D model in which a 3D model having a static background is produced using a point cloud and an image obtained through 3D scanning. The apparatus includes an image matching unit for producing a matched image by matching a point cloud obtained by scanning a predetermined region to a camera image obtained by photographing the predetermined region; a mesh model processing unit for producing an object positioned in the region as a mesh model; and a 3D model processing unit for producing a 3D model for the object by reflecting texture information obtained from the matched image to the mesh model. The disclosed may be used for a 3D map service.Type: GrantFiled: September 14, 2012Date of Patent: December 8, 2015Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTEInventors: Chang Woo Chu, Il Kyu Park, Young Mi Cha, Ji Hyung Lee, Bon Ki Koo
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Publication number: 20150279016Abstract: An image processing apparatus and method for calibrating a depth of a depth sensor. The image processing method may include obtaining a depth image of a target object captured by a depth sensor and a color image of the target object captured by a color camera; and calibrating a depth of the depth sensor by calibrating a geometrical relation between a projector and a depth camera, which are included in the depth sensor, based the obtained depth and color images and calculating a correct feature point on an image plane of the depth camera that corresponds to a feature point of an image plane of the projector.Type: ApplicationFiled: July 28, 2014Publication date: October 1, 2015Inventors: Jae-Hean KIM, Chang-Woo CHU, Young-Mi CHA, Jin-Sung CHOI, Bon-Ki KOO
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Patent number: 9147249Abstract: Disclosed is a method of calibrating a depth image based on a relationship between a depth sensor and a color camera, and an apparatus for calibrating a depth image may include a three-dimensional (3D) point determiner to determine a 3D point of a camera image and a 3D point of a depth image simultaneously captured with the camera image, a calibration information determiner to determine calibration information for calibrating an error of a depth image captured by the depth sensor and a geometric information between the depth sensor and a color camera, using the 3D point of the camera image and the 3D point of the depth image, and a depth image calibrator to calibrate the depth image based on the calibration information and the 3D point of the depth image.Type: GrantFiled: October 22, 2013Date of Patent: September 29, 2015Assignee: Electronics and Telecommunications Research InstituteInventors: Jae Hean Kim, Chang Woo Chu, Il Kyu Park, Young Mi Cha, Jin Sung Choi, Bon Ki Koo
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Publication number: 20150213644Abstract: Provided are a multi-primitive fitting method including an acquiring point cloud data by collecting data of each of input points, a obtaining a segment for the points using the point cloud data, and a performing primitive fitting using data of points included in the segment and the point cloud data, and a multi-primitive fitting device that performs the method.Type: ApplicationFiled: January 28, 2015Publication date: July 30, 2015Inventors: Young Mi CHA, Chang Woo CHU, Jae Hean KIM
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Publication number: 20140334675Abstract: Provided is an apparatus and method for extracting a movement path, the movement path extracting apparatus including an image receiver to receive an image from a camera group in which a mutual positional relationship among cameras is fixed, a geographic coordinates receiver to receive geographic coordinates of a moving object on which the camera group is fixed, and a movement path extractor to extract a movement path of the camera group based on a direction and a position of a reference camera of the camera group using the image and the geographic coordinates.Type: ApplicationFiled: May 6, 2014Publication date: November 13, 2014Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTEInventors: Chang Woo CHU, Jae Hean KIM, Il Kyu PARK, Young Mi CHA, Jin Sung CHOI, Bon Ki KOO
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Publication number: 20140245231Abstract: A primitive fitting apparatus is provided. The primitive fitting apparatus may include a selecting unit to receive, from a user, a selection of points used to fit a primitive a user desires to fit from a point cloud, an identifying unit to receive a selection of the primitive from the user and to identify the selected primitive, and a fitting unit to fit the primitive to correspond to the points, using the points and primitive.Type: ApplicationFiled: February 28, 2014Publication date: August 28, 2014Applicant: Electronics and Telecommunications Research InstituteInventors: Young Mi CHA, Chang Woo CHU, Jae Hean KIM, Il Kyu PARK, Bon Ki KOO, Jin Sung CHOI
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Publication number: 20140218354Abstract: A view image providing device and method are provided. The view image providing device may include a panorama image generation unit to generate a panorama image using a cube map including a margin area by obtaining an omnidirectional image, a mesh information generation unit to generate 3-dimensional (3D) mesh information that uses the panorama image as a texture by obtaining 3D data, and a user data rendering unit to render the panorama image and the mesh information into user data according to a position and direction input by a user.Type: ApplicationFiled: December 11, 2013Publication date: August 7, 2014Applicant: Electronics and Telecommunications Research InstituteInventors: Il Kyu PARK, Young Mi CHA, Chang Woo CHU, Jae Hean KIM, Jin Sung CHOI, Bon Ki KOO
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Publication number: 20140112574Abstract: Disclosed is a method of calibrating a depth image based on a relationship between a depth sensor and a color camera, and an apparatus for calibrating a depth image may include a three-dimensional (3D) point determiner to determine a 3D point of a camera image and a 3D point of a depth image simultaneously captured with the camera image, a calibration information determiner to determine calibration information for calibrating an error of a depth image captured by the depth sensor and a geometric information between the depth sensor and a color camera, using the 3D point of the camera image and the 3D point of the depth image, and a depth image calibrator to calibrate the depth image based on the calibration information and the 3D point of the depth image.Type: ApplicationFiled: October 22, 2013Publication date: April 24, 2014Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTEInventors: Jae Hean KIM, Chang Woo CHU, Il Kyu PARK, Young Mi CHA, Jin Sung CHOI, Bon Ki KOO
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Publication number: 20130207966Abstract: Disclosed are an apparatus and a method of producing a 3D model in which a 3D model having a static background is produced using a point cloud and an image obtained through 3D scanning. The apparatus includes an image matching unit for producing a matched image by matching a point cloud obtained by scanning a predetermined region to a camera image obtained by photographing the predetermined region; a mesh model processing unit for producing an object positioned in the region as a mesh model; and a 3D model processing unit for producing a 3D model for the object by reflecting texture information obtained from the matched image to the mesh model. The disclosed may be used for a 3D map service.Type: ApplicationFiled: September 14, 2012Publication date: August 15, 2013Applicant: Electronics and Telecommunications Research InstituteInventors: Chang Woo CHU, IL Kyu PARK, Young Mi CHA, Ji Hyung LEE, Bon Ki KOO
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Publication number: 20120162215Abstract: The present invention relates to an apparatus and method for generating a texture of a 3D reconstructed object depending on a resolution level of a 2D image. The apparatus includes a 3D object reconstruction unit for extracting, from images captured from at least two areas located at different distances, information about a 3D object and information about cameras, and then reconstructing the 3D object. A resolution calculation unit measures size of a space area, covered by one pixel of each of the images in a photorealistic image of the 3D object, and then calculates resolutions of the images. A texture generation unit generates textures for respective levels corresponding to classified images by using the images classified according to resolution level. A rendering unit selects a texture for a relevant level depending on a size of the 3D object on a screen, and then renders the selected texture.Type: ApplicationFiled: December 21, 2011Publication date: June 28, 2012Applicant: Electronics and Telecommunications Research InstituteInventors: Young-Mi CHA, Chang-Woo Chu, Il-Kyu Park, Bon-Ki Koo
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Publication number: 20120155745Abstract: Disclosed herein is an apparatus and method for extracting correspondences between aerial images. The apparatus includes a line extraction unit, a line direction determination unit, a building top area extraction unit, and a correspondence extraction unit. The line extraction unit extracts lines corresponding buildings from aerial images. The line direction determination unit defines the directions of the lines as x, y and z axis directions based on a two-dimensional (2D) coordinate system. The building top area extraction unit rotates lines in the x and y axis directions so that the lines are arranged in parallel with the horizontal and vertical directions of the 2D image, and then extracts building top areas from rectangles. The correspondence extraction unit extracts correspondences between the aerial images by comparing the locations of the building top areas extracted from the aerial images.Type: ApplicationFiled: December 14, 2011Publication date: June 21, 2012Applicant: Electronics and Telecommunications Research InstituteInventors: Il-Kyu PARK, Chang-Woo Chu, Young-Mi Cha, Bon-Ki Koo