Patents by Inventor Sang-Hack Jung

Sang-Hack 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).

  • Patent number: 9977972
    Abstract: A computer implemented method for determining a vehicle type of a vehicle detected in an image is disclosed. An image having a detected vehicle is received. A number of vehicle models having salient feature points is projected on the detected vehicle. A first set of features derived from each of the salient feature locations of the vehicle models is compared to a second set of features derived from corresponding salient feature locations of the detected vehicle to form a set of positive match scores (p-scores) and a set of negative match scores (n-scores). The detected vehicle is classified as one of the vehicle models based at least in part on the set of p-scores and the set of n-scores.
    Type: Grant
    Filed: October 21, 2014
    Date of Patent: May 22, 2018
    Assignee: SRI International
    Inventors: Saad Masood Khan, Hui Cheng, Dennis Lee Matthies, Harpreet Singh Sawhney, Sang-Hack Jung, Chris Broaddus, Bogdan Calin Mihai Matei, Ajay Divakaran
  • Publication number: 20160379062
    Abstract: A computer implemented method for determining a vehicle type of a vehicle detected in an image is disclosed. An image having a detected vehicle is received. A number of vehicle models having salient feature points is projected on the detected vehicle. A first set of features derived from each of the salient feature locations of the vehicle models is compared to a second set of features derived from corresponding salient feature locations of the detected vehicle to form a set of positive match scores (p-scores) and a set of negative match scores (n-scores). The detected vehicle is classified as one of the vehicle models models based at least in part on the set of p-scores and the set of n-scores.
    Type: Application
    Filed: October 21, 2014
    Publication date: December 29, 2016
    Inventors: Saad Masood Khan, Hui Cheng, Dennis Lee Matthies, Harpreet Singh Sawhney, Sang-Hack Jung, Chris Broaddus, Bogdan Calin Mihai Matei, Ajay Divakaran
  • Patent number: 8913783
    Abstract: A computer implemented method for determining a vehicle type of a vehicle detected in an image is disclosed. An image having a detected vehicle is received. A number of vehicle models having salient feature points is projected on the detected vehicle. A first set of features derived from each of the salient feature locations of the vehicle models is compared to a second set of features derived from corresponding salient feature locations of the detected vehicle to form a set of positive match scores (p-scores) and a set of negative match scores (n-scores). The detected vehicle is classified as one of the vehicle models models based at least in part on the set of p-scores and the set of n-scores.
    Type: Grant
    Filed: October 28, 2010
    Date of Patent: December 16, 2014
    Assignee: SRI International
    Inventors: Saad Masood Khan, Hui Cheng, Dennis Lee Matthies, Harpreet Singh Sawhney, Sang-Hack Jung, Chris Broaddus, Bogdan Calin Mihai Matei, Ajay Divakaran
  • Patent number: 8861842
    Abstract: A computer implemented method for detecting the presence of one or more pedestrians in the vicinity of the vehicle is disclosed. Imagery of a scene is received from at least one image capturing device. A depth map is derived from the imagery. A plurality of pedestrian candidate regions of interest (ROIs) is detected from the depth map by matching each of the plurality of ROIs with a 3D human shape model. At least a portion of the candidate ROIs is classified by employing a cascade of classifiers tuned for a plurality of depth bands and trained on a filtered representation of data within the portion of candidate ROIs to determine whether at least one pedestrian is proximal to the vehicle.
    Type: Grant
    Filed: February 7, 2011
    Date of Patent: October 14, 2014
    Assignee: SRI International
    Inventors: Sang-Hack Jung, Mayank Bansal, Bogdan Calin Mihai Matei, Jayan Eledath, Harpreet Singh Sawhney, Rakesh Kumar, Raia Hadsell
  • Patent number: 8860813
    Abstract: A computer-implemented method for matching objects is disclosed. At least two images where one of the at least two images has a first target object and a second of the at least two images has a second target object are received. At least one first patch from the first target object and at least one second patch from the second target object are extracted. A distance-based part encoding between each of the at least one first patch and the at least one second patch based upon a corresponding codebook of image parts including at least one of part type and pose is constructed. A viewpoint of one of the at least one first patch is warped to a viewpoint of the at least one second patch. A parts level similarity measure based on the view-invarient distance measure for each of the at least one first patch and the at least one second patch is applied to determine whether the first target object and the second target object are the same or different objects.
    Type: Grant
    Filed: December 11, 2012
    Date of Patent: October 14, 2014
    Assignee: SRI International
    Inventors: Sang-Hack Jung, Ajay Divakaran, Harpreet Singh Sawhney
  • Patent number: 8744122
    Abstract: The present invention relates to a system and method for detecting one or more targets belonging to a first class (e.g., moving and/or stationary people), from a moving platform in a 3D-rich environment. The framework described here is implemented using a number of monocular or stereo cameras distributed around the vehicle to provide 360 degrees coverage. Furthermore, the framework described here utilizes numerous filters to reduce the number of false positive identifications of the targets.
    Type: Grant
    Filed: October 22, 2009
    Date of Patent: June 3, 2014
    Assignee: SRI International
    Inventors: Garbis Salgian, John Benjamin Southall, Sang-Hack Jung, Vlad Branzoi, Jiangjian Xiao, Feng Han, Supun Samarasekera, Rakesh Kumar, Jayan Eledath
  • Patent number: 8634638
    Abstract: The present invention relates to a method and system for creating a strong classifier based on motion patterns wherein the strong classifier may be used to determine an action being performed by a body in motion. When creating the strong classifier, action classification is performed by measuring similarities between features within motion patterns. Embodiments of the present invention may utilize candidate part-based action sets and training samples to train one or more weak classifiers that are then used to create a strong classifier.
    Type: Grant
    Filed: June 22, 2009
    Date of Patent: January 21, 2014
    Assignee: SRI International
    Inventors: Feng Han, Hui Cheng, Jiangjian Xiao, Harpreet Singh Sawhney, Sang-Hack Jung, Rakesh Kumar, Yanlin Guo
  • Patent number: 8330819
    Abstract: A computer-implemented method for for matching objects is disclosed. At least two images where one of the at least two images has a first target object and a second of the at least two images has a second target object are received. At least one first patch from the first target object and at least one second patch from the second target object are extracted. A distance-based part encoding between each of the at least one first patch and the at least one second patch based upon a corresponding codebook of image parts including at least one of part type and pose is constructed. A viewpoint of one of the at least one first patch is warped to a viewpoint of the at least one second patch. A parts level similarity measure based on the view-invariant distance measure for each of the at least one first patch and the at least one second patch is applied to determine whether the first target object and the second target object are the same or different objects.
    Type: Grant
    Filed: April 12, 2010
    Date of Patent: December 11, 2012
    Assignee: SRI International
    Inventors: Sang-Hack Jung, Ajay Divakaran, Harpreet Singh Sawhney
  • Publication number: 20120106800
    Abstract: A computer implemented method for determining a vehicle type of a vehicle detected in an image is disclosed. An image having a detected vehicle is received. A number of vehicle models having salient feature points is projected on the detected vehicle. A first set of features derived from each of the salient feature locations of the vehicle models is compared to a second set of features derived from corresponding salient feature locations of the detected vehicle to form a set of positive match scores (p-scores) and a set of negative match scores (n-scores). The detected vehicle is classified as one of the vehicle models models based at least in part on the set of p-scores and the set of n-scores.
    Type: Application
    Filed: October 28, 2010
    Publication date: May 3, 2012
    Inventors: Saad Masood Khan, Hui Cheng, Dennis Lee Matthies, Harpreet Singh Sawhney, Sang-Hack Jung, Chris Broaddus, Bogdan Calin Mihai Matei, Ajay Divakaran
  • Patent number: 8102427
    Abstract: A method for estimating egomotion of a camera mounted on a vehicle that uses infra-red images is disclosed, comprising the steps of (a) receiving a pair of frames from a plurality of frames from the camera, the first frame being assigned to a previous frame and an anchor frame and the second frame being assigned to a current frame; (b) extracting features from the previous frame and the current frame; (c) finding correspondances between extracted features from the previous frame and the current frame; and (d) estimating the relative pose of the camera by minimizing reprojection errors from the correspondences to the anchor frame.
    Type: Grant
    Filed: September 3, 2008
    Date of Patent: January 24, 2012
    Assignee: SRI International
    Inventors: Sang-Hack Jung, Jayan Eledath
  • Publication number: 20110255741
    Abstract: A computer implemented method for detecting the presence of one or more pedestrians in the vicinity of the vehicle is disclosed. Imagery of a scene is received from at least one image capturing device. A depth map is derived from the imagery. A plurality of pedestrian candidate regions of interest (ROIs) is detected from the depth map by matching each of the plurality of ROIs with a 3D human shape model. At least a portion of the candidate ROIs is classified by employing a cascade of classifiers tuned for a plurality of depth bands and trained on a filtered representation of data within the portion of candidate ROIs to determine whether at least one pedestrian is proximal to the vehicle.
    Type: Application
    Filed: February 7, 2011
    Publication date: October 20, 2011
    Inventors: Sang-Hack Jung, Mayank Bansal, Bogdan Calin Mihai Matei, Jayan Eledath, Harpreet Singh Sawhney, Rakesh Kumar, Raia Hadsell
  • Publication number: 20100328452
    Abstract: A computer-implemented method for matching objects is disclosed. At least two images where one of the at least two images has a first target object and a second of the at least two images has a second target object are received. At least one first patch from the first target object and at least one second patch from the second target object are extracted. A distance-based part encoding between each of the at least one first patch and the at least one second patch based upon a corresponding codebook of image parts including at least one of part type and pose is constructed. A viewpoint of one of the at least one first patch is warped to a viewpoint of the at least one second patch. A parts level similarity measure based on the view-invariant distance measure for each of the at least one first patch and the at least one second patch is applied to determine whether the first target object and the second target object are the same or different objects.
    Type: Application
    Filed: April 12, 2010
    Publication date: December 30, 2010
    Inventors: Sang-Hack Jung, Ajay Divakaran, Harpreet Singh Sawhney
  • Publication number: 20100202657
    Abstract: The present invention relates to a system and method for detecting one or more targets belonging to a first class (e.g., moving and/or stationary people), from a moving platform in a 3D-rich environment. The framework described here is implemented using a number of monocular or stereo cameras distributed around the vehicle to provide 360 degrees coverage. Furthermore, the framework described here utilizes numerous filters to reduce the number of false positive identifications of the targets.
    Type: Application
    Filed: October 22, 2009
    Publication date: August 12, 2010
    Inventors: Garbis Salgian, John Benjamin Southall, Sang-Hack Jung, Vlad Branzoi, Jiangjian Xiao, Feng Han, Supun Samarasekera, Rakesh Kumar, Jayan Eledath
  • Publication number: 20090316983
    Abstract: The present invention relates to a method and system for creating a strong classifier based on motion patterns wherein the strong classifier may be used to determine an action being performed by a body in motion. When creating the strong classifier, action classification is performed by measuring similarities between features within motion patterns. Embodiments of the present invention may utilize candidate part-based action sets and training samples to train one or more weak classifiers that are then used to create a strong classifier.
    Type: Application
    Filed: June 22, 2009
    Publication date: December 24, 2009
    Inventors: Feng Han, Hui Cheng, Jiangjian Xiao, Harpreet Singh Sawhney, Sang-Hack Jung, Rakesh Kumar, Yanlin Guo
  • Publication number: 20090207257
    Abstract: A method for estimating egomotion of a camera mounted on a vehicle that uses infra-red images is disclosed, comprising the steps of (a) receiving a pair of frames from a plurality of frames from the camera, the first frame being assigned to a previous frame and an anchor frame and the second frame being assigned to a current frame; (b) extracting features from the previous frame and the current frame; (c) finding correspondances between extracted features from the previous frame and the current frame; and (d) estimating the relative pose of the camera by minimizing reprojection errors from the correspondences to the anchor frame.
    Type: Application
    Filed: September 3, 2008
    Publication date: August 20, 2009
    Inventors: Sang-Hack Jung, Jayan Eledath