The invention discloses a
light guide plate defect detection method and
system based on a neural network, and particularly relates to the technical field of
machine vision detection, and the method comprises the following steps: aiming at the problem of image
instability of a
light guide plate in a dynamic transmission or rotation process, continuously collecting an
image sequence and extracting
time domain features; and performing interference judgment in combination with the inter-frame consistency prediction coefficient and a first threshold to realize accurate identification of the abnormal
image frame. For an abnormal
image frame, further correcting the recognition credibility of the abnormal
image frame by adopting a confidence adjustment and fusion mode, and meanwhile, introducing a
frequency domain transformation and
image enhancement strategy to compensate detail loss caused by
motion blur; according to the method, inter-frame
consistency analysis, confidence fusion regulation and control and
frequency domain fuzzy recognition and compensation mechanisms are introduced, abnormal judgment and
image quality restoration of the
light guide plate image in the dynamic scene are realized, the recognition accuracy and stability of the neural
network model on the defect type, position and confidence are improved, and the
false detection and omission ratio is effectively reduced.