Patents by Inventor Chang Joo Nam

Chang Joo Nam 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: 11557137
    Abstract: The system includes a metric map creation unit configured to create a metric map using first image data received from a 3D sensor, an image processing unit configured to recognize an object by creating and classifying a point cloud using second image data received from an RGB camera; a probability-based map production unit configured to create an object location map and a spatial semantic map in a probabilistic expression method using a processing result of the image processing unit, a question creation unit configured to extract a portion of high uncertainty about an object class from a produced map on the basis of entropy and ask a user about the portion, and a map update unit configured to receive a response from the user and update a probability distribution for spatial information according to a change in probability distribution for classification of the object.
    Type: Grant
    Filed: August 24, 2021
    Date of Patent: January 17, 2023
    Assignee: Korea Institute of Science and Technology
    Inventors: Yoon Seon Oh, Ho Yeon Hwang, Sung Kee Park, Chang Joo Nam
  • Publication number: 20220156536
    Abstract: The system includes a metric map creation unit configured to create a metric map using first image data received from a 3D sensor, an image processing unit configured to recognize an object by creating and classifying a point cloud using second image data received from an RGB camera; a probability-based map production unit configured to create an object location map and a spatial semantic map in a probabilistic expression method using a processing result of the image processing unit, a question creation unit configured to extract a portion of high uncertainty about an object class from a produced map on the basis of entropy and ask a user about the portion, and a map update unit configured to receive a response from the user and update a probability distribution for spatial information according to a change in probability distribution for classification of the object.
    Type: Application
    Filed: August 24, 2021
    Publication date: May 19, 2022
    Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Yoon Seon OH, Ho Yeon HWANG, Sung Kee PARK, Chang Joo NAM
  • Patent number: 8523254
    Abstract: A robot hand with a connection part that undergoes stretching deformation according to object shape. The robot hand includes a variable connection device that provides a contact face that enables pressing and contacting a moving target and has a connection part in contact with the moving target enables stretching deformation; a connection length controller that interfaces with a drive part to stretch and deform the connection part so that the connection part undergoes conversion between a closed-loop state wherein it is continuous with the surface of the moving target or divided into a plurality of sections to be pressed and contacted, and an open-loop state wherein it detaches from the moving target; and a shape retention device that retains the shape of the variable connection device consistently in a closed-loop state wherein the variable connection device is pressed and contacted with the moving target at a set pressure.
    Type: Grant
    Filed: July 17, 2009
    Date of Patent: September 3, 2013
    Assignee: Korea University Research and Business Foundation
    Inventors: Nak Ju Doh, Jingfu Jin, Chang Joo Nam, Young Hoon Lee, Shang Li Yuen, Chang Hyun Jun
  • Publication number: 20110254303
    Abstract: The present invention relates to a robot hand with a connection part that undergoes stretching deformation according to object shape and a method for controlling a robot hand; the key technical point pertains to a robot hand with a connection part that undergoes stretching deformation according to object shape, comprising: a variable connection device (100) that provides a contact face that enables pressing and contacting a moving target (10) and has a structure wherein a connection part (100a) in contact with said moving target (10) enables stretching deformation; a connection length controller (200) that interfaces with a drive part such as a motor (201) or pump to stretch and deform the connection part (100a) of said variable connection device so that the connection part (100a) of said variable connection device undergoes conversion between a closed-loop state wherein it is continuous with the surface of said moving target (10) or divided into a plurality of sections to be pressed and contacted, and an ope
    Type: Application
    Filed: July 17, 2009
    Publication date: October 20, 2011
    Inventors: Nak Ju Doh, Jingfu Jin, Chang Joo Nam, Young Hoon Lee, Shang Li Yuen, Chang Hyun Jun