The image evaluation method and apparatus check for image abnormalities. In
the method and apparatus, a Mahalanobis space is set preliminarily using a
specified characteristic quantity extracted from specified image data.
Then, Mahalanobis distance in the Mahalanobis space using image data read
from an image to be evaluated. The calculated Mahalanobis distance is
compared with a specified threshold value to check for the image
abnormalities in the image to be evaluated. The method and apparatus
provide a quantitative criterion in checking for abnormal image and enable
image evaluation to be performed in a simple and rapid manner to realize
efficient inspection.
