Patent Document ID: 9846932
Application ID: 14417094
Patent Flag: 1

Claim One:
1. A defect detection method for a display panel based on histogram of oriented gradient, said method comprising: capturing an image of a substrate of the display panel by an industrial camera; performing detection on a region of interest (ROI) on the image, where the ROI of the image is taken as a to-be-detected image; extracting a feature descriptor from a histogram of oriented gradient of the to-be-detected image; inputting the feature descriptor into a trained classifier model for proceeding with recognition and classification; outputting a detection result on a basis of a determination made by the trained classifier model, collecting positive image samples with defects and negative image samples without defects; performing feature extraction on histograms of oriented gradient of the positive image samples and the negative image samples; and training a classifier with inputted features of the histograms of oriented gradient of the positive image samples and the negative image samples to obtain the trained classifier model.