Patent ID: 11935443
Assignee: LG DISPLAY CO., LTD.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 6:
7. The display defect detection system of claim 1, wherein the Mura detection circuit comprises:
a gray converter configured to convert the preprocessing image from an RGB true color-based image into a gray-scale image;
a resize circuit configured to decrease a total size of the preprocessing image on the basis of a size of the target Mura and adaptively adjust a resize ratio of the preprocessing image on the basis of a size of the target Mura;
an edge map generator configured to detecting an edge component in the resize image to generate an edge map image having feature values;
a feature smoothing circuit configured to remove noise and a feature value of a non-repetitive type among the feature values of the edge map image; and
a final feature value calculator configured to calculate, as a final feature value of the target Mura, a largest feature value among the feature values included in the feature map image.