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

Claim 7:
8. A display defect detection method, comprising:
receiving a capture image of a test pattern, displayed by a display panel, as a panel image including target Mura having a repetitive characteristic and preprocessing the panel image to output a preprocessing image;
decreasing a total size of the preprocessing image on the basis of a size of the target Mura to generate a resize image;
detecting an edge component in the resize image to generate an edge map image having feature values;
removing a feature value of a non-repetitive type among the feature values of the edge map image through a feature smoothing process that does not use a threshold to generate a feature map image; and
detecting a display position of the target Mura on the basis of a final feature value of the target Mura calculated based on the feature map image,
wherein the feature map image includes only feature values with a repetitive characteristic and does not include feature values with non-repetitive characteristics.