公开(公告)号：US20210201472A1

公开(公告)日：2021-07-01

申请号：US17128680

申请日：2020-12-21

Applicant: Korea Advanced Institute of Science and Technology

Inventor： Hoon SOHN ,  Soonkyu HWANG ,  Hyeonjin KIM ,  Hyung Jin LIM

IPC: G06T7/00 ,  G06T7/70 ,  G06K9/62 ,  G06T7/62 ,  H04N5/30 ,  G06T11/00 ,  G06K9/32 ,  G06T7/11 ,  G06T5/20 ,  G06T5/00

Abstract: Disclosed are a method of inspecting and evaluating a coating state of a steel structure, and a system therefor. A plurality of vision images and thermal images are acquired. While acquiring the thermal images, a desired region is heated. After the thermal images and the vision images in a dynamic state are reconstructed into a time-spatial-integrated thermal image and a time-spatial-integrated vision image in a static state, respectively, an overlay image is generated by overlaying the two images. A deterioration region of a coating is detected, and coating deterioration is classified by characteristics. A size of the coating deterioration region is quantified. A thickness of the coating is inspected by analyzing thermal energy measured from the time-spatial-integrated thermal image. A coating grade is calculated by comprehensively evaluating a coating deterioration inspection result and a coating thickness inspection result. A state evaluation report for the steel structure is automatically created.

公开(公告)号：US20200074901A1

公开(公告)日：2020-03-05

申请号：US16512990

申请日：2019-07-16

Applicant: Samsung Display Co., Ltd. ,  Korea Advanced Institute of Science and Technology

Inventor： Hoon SOHN ,  Sangwoo CHOI ,  Minsang KOO ,  Sanghyuk KWON ,  Eunchul SHIN ,  Woojin JUNG ,  Jiho PARK ,  Soonkyu HWANG

IPC: G09G3/00 ,  G01N21/956 ,  G01N21/17 ,  G01N25/72

Abstract: An apparatus for inspecting a display panel for defects includes a table which supports the display panel, a laser excitation unit that irradiates a non-display area of the display panel with a point laser beam, a thermal wave detecting unit that generates thermal wave images of irradiated portions of the non-display area, a driving unit, and a control unit. A groove corresponding to an edge of the display panel may be defined in a top surface of the table. A defect, such as a crack, may be detected by comparing a defect pattern obtained from the thermal wave images with a pre-registered defect pattern.