IMAGE DATA PROCESSING APPARATUS AND METHOD FOR DEFECT INSPECTION, DEFECT INSPECTING APPARATUS AND METHOD USING THE IMAGE DATA PROCESSING APPARATUS AND METHOD, BOARD-LIKE BODY MANUFACTURING METHOD USING THE DEFECT INSPECTING APPARATUS AND METHOD, AND RECORDING MEDIUM

摘要

in a photographed image of a plate -like body , using the signal threshold value and extracts the defect candidate . Extracted from the plurality of defect candidates , the position of the width direction search the same defect candidates , and by repeating the search to obtain the distance between a defect in the transport direction of a candidate location , and adjacent to the conveying direction of the defect candidate location , on the interval frequency distribution is obtained . Of the distance between the incidence of interest exceed the frequency threshold, the plate -shaped body is determined as having a periodic defect in the transport direction . At this time , the frequency threshold is set to increase in the more schematically shorten the interval of interest . ;