Patents by Inventor ChoonSik Cho

ChoonSik Cho 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 APPARATUS FOR MEASURING 3D SHAPE BY USING DERIVATIVE MOIRE
    Publication number: 20150324657
    Abstract: The present disclosure provides an apparatus for measuring three-dimensional shapes by using moire interference, which comprises a unit calibration unit, an integrated calibration unit and a phase calibration unit. The unit calibration unit is configured to use a phase difference between two adjacent measuring points for obtaining a unit calibration value of an absolute moire order. The integrated calibration unit is configured to calibrate the absolute moire order up to a target point by using the unit calibration values. The phase calibration unit is configured to calibrate a phase of the target point by using the absolute moire order.
    Type: Application
    Filed: June 9, 2014
    Publication date: November 12, 2015
    Inventors: ChoonSik Cho, YoonJae BAE, ByeongWan HA, JiAn PARK, JooHwan KIM