Patents by Inventor Yun Su Choi

Yun Su Choi 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).

  • METHOD AND SYSTEM FOR DETERMINING OPTIMAL EXPOSURE TIME AND NUMBER OF EXPOSURES IN STRUCTURED LIGHT-BASED 3D CAMERA
    Publication number: 20210344892
    Abstract: Disclosed is a method for determining the optimal exposure time and the number of exposures in a structured light-based 3D camera system. The method includes capturing a reference image onto which first and second patterns are projected, calculating a slope related to brightness and an exposure time for a pixel of the reference image and categorizing a state of the slope, creating an upper loss pixel distribution chart and an accumulation pixel distribution chart by calculating the number of upper loss pixels and the number of accumulation pixels for the exposure time of the structured light-based 3D camera system, and determining the optimal exposure time and the number of exposures of the structured light-based 3D camera system using the upper loss pixel distribution chart and the accumulation pixel distribution chart.
    Type: Application
    Filed: July 1, 2021
    Publication date: November 4, 2021
    Applicant: RESEARCH & BUSINESS FOUNDATION SUNGKYUNKWAN UNIVERSITY
    Inventors: Suk-han LEE, Yun-su CHOI, In-sub SHIN
  • Method and system for determining optimal exposure time and number of exposures in structured light-based 3D camera
    Patent number: 11070788
    Abstract: Disclosed is a method for determining the optimal exposure time and the number of exposures in a structured light-based 3D camera system. The method includes capturing a reference image onto which first and second patterns are projected, calculating a slope related to brightness and an exposure time for a pixel of the reference image and categorizing a state of the slope, creating an upper loss pixel distribution chart and an accumulation pixel distribution chart by calculating the number of upper loss pixels and the number of accumulation pixels for the exposure time of the structured light-based 3D camera system, and determining the optimal exposure time and the number of exposures of the structured light-based 3D camera system using the upper loss pixel distribution chart and the accumulation pixel distribution chart.
    Type: Grant
    Filed: September 1, 2019
    Date of Patent: July 20, 2021
    Inventors: Suk-han Lee, Yun-su Choi, In-sub Shin
  • METHOD AND SYSTEM FOR DETERMINING OPTIMAL EXPOSURE TIME AND NUMBER OF EXPOSURES IN STRUCTURED LIGHT-BASED 3D CAMERA
    Publication number: 20190387215
    Abstract: Disclosed is a method for determining the optimal exposure time and the number of exposures in a structured light-based 3D camera system. The method includes capturing a reference image onto which first and second patterns are projected, calculating a slope related to brightness and an exposure time for a pixel of the reference image and categorizing a state of the slope, creating an upper loss pixel distribution chart and an accumulation pixel distribution chart by calculating the number of upper loss pixels and the number of accumulation pixels for the exposure time of the structured light-based 3D camera system, and determining the optimal exposure time and the number of exposures of the structured light-based 3D camera system using the upper loss pixel distribution chart and the accumulation pixel distribution chart.
    Type: Application
    Filed: September 1, 2019
    Publication date: December 19, 2019
    Applicant: RESEARCH & BUSINESS FOUNDATION SUNGKYUNKWAN UNIVERSITY
    Inventors: Suk-han LEE, Yun-su CHOI, In-sub SHIN
  • Method and system for determining optimal exposure time and number of exposures in structured light-based 3D camera
    Patent number: 10404968
    Abstract: Disclosed is a method for determining the optimal exposure time and the number of exposures in a structured light-based 3D camera system. The method includes capturing a reference image onto which first and second patterns are projected, calculating a slope related to brightness and an exposure time for a pixel of the reference image and categorizing a state of the slope, creating an upper loss pixel distribution chart and an accumulation pixel distribution chart by calculating the number of upper loss pixels and the number of accumulation pixels for the exposure time of the structured light-based 3D camera system, and determining the optimal exposure time and the number of exposures of the structured light-based 3D camera system using the upper loss pixel distribution chart and the accumulation pixel distribution chart.
    Type: Grant
    Filed: October 26, 2016
    Date of Patent: September 3, 2019
    Inventors: Suk-han Lee, Yun-su Choi, In-sub Shin
  • METHOD AND SYSTEM FOR DETERMINING OPTIMAL EXPOSURE TIME AND NUMBER OF EXPOSURES IN STRUCTURED LIGHT-BASED 3D CAMERA
    Publication number: 20170118456
    Abstract: Disclosed is a method for determining the optimal exposure time and the number of exposures in a structured light-based 3D camera system. The method includes capturing a reference image onto which first and second patterns are projected, calculating a slope related to brightness and an exposure time for a pixel of the reference image and categorizing a state of the slope, creating an upper loss pixel distribution chart and an accumulation pixel distribution chart by calculating the number of upper loss pixels and the number of accumulation pixels for the exposure time of the structured light-based 3D camera system, and determining the optimal exposure time and the number of exposures of the structured light-based 3D camera system using the upper loss pixel distribution chart and the accumulation pixel distribution chart.
    Type: Application
    Filed: October 26, 2016
    Publication date: April 27, 2017
    Inventors: Suk-han LEE, Yun-su CHOI, In-sub SHIN
  • Rubber composition for tire tread and tire manufactured by using the same
    Patent number: 9631071
    Abstract: Provided are a rubber composition for tire tread, which exhibits excellent cut and chip resistance and also exhibits excellent abrasion resistance and heat generation resistance performances that are in a trade-off relationship with the cut and chip resistance, and a tire produced using the rubber composition. The rubber composition for tire tread has excellent abrasion resistance and cut and chip resistance, and thus a tire produced using the rubber composition for tire tread can be suitably used in buses or trucks.
    Type: Grant
    Filed: April 21, 2015
    Date of Patent: April 25, 2017
    Assignee: HANKOOK TIRE CO., LTD.
    Inventors: SangMan Shin, Jung Tae Kim, Yun Su Choi
  • Rubber Composition for Tire Tread and Tire Manufactured by Using the Same
    Publication number: 20150299436
    Abstract: Provided are a rubber composition for tire tread, which exhibits excellent cut and chip resistance and also exhibits excellent abrasion resistance and heat generation resistance performances that are in a trade-off relationship with the cut and chip resistance, and a tire produced using the rubber composition. The rubber composition for tire tread has excellent abrasion resistance and cut and chip resistance, and thus a tire produced using the rubber composition for tire tread can be suitably used in buses or trucks.
    Type: Application
    Filed: April 21, 2015
    Publication date: October 22, 2015
    Inventors: Sangman Shin, Jung Tae Kim, Yun Su Choi