IMAGE INSPECTION METHOD AND IMAGE INSPECTION DEVICE

摘要

PROBLEM TO BE SOLVED: To provide an image inspection method which is capable of more accurately execute quality determination based on a Mahalanobis distance calculated from a feature quantity of an image.SOLUTION: The image inspection method includes: a step of acquiring a plurality of feature quantities with respect to each of a plurality of acquired good quality images and calculating a first parameter and a second parameter for each of the plurality of good quality images; a step of calculating Mahalanobis distances per good quality image on the basis of the first and second parameters and calculating a reference Mahalanobis distance; a step of acquiring a plurality of feature quantities with respect to an acquired image to be inspected, calculating a first parameter and a second parameter for the image to be inspected, and calculating a Mahalanobis distance of the image to be inspected, on the basis of the calculated first and second parameters; and a step of determining the quality of the image to be inspected, on the basis of the Mahalanobis distance of the image to be inspected and the reference Mahalanobis distance.