公开(公告)号：US12223638B2

公开(公告)日：2025-02-11

申请号：US17891714

申请日：2022-08-19

Applicant: LG Display Co., Ltd.

Inventor： Ki Hyun Kim ,  Jong Ju Hong

IPC: G06T7/00 ,  G06T5/70 ,  G06T7/13 ,  G06T7/70 ,  G06V10/24 ,  G06V10/25 ,  G06V10/50

Abstract: A display defect detection system and a detection method thereof are disclosed. A display defect detection system includes a preprocessing circuit receiving a capture image of a test pattern, displayed by a display panel, as a panel image including diagonal Mura and preprocessing the panel image to output a preprocessing image and a Mura detection circuit calculating a final feature value of the diagonal Mura by multiplying a first feature value, in which a luminance difference of the diagonal Mura is reflected, by a second feature value in which a shape ratio of the diagonal Mura is reflected, on the basis of an edge map of the preprocessing image, and detecting a display position of the diagonal Mura on the basis of the final feature value of the diagonal Mura.