Image inspecting apparatus and image inspecting program

An image inspecting process for comparing first image data created as data representing a reference-image acting as an inspecting reference with second image data created as data representing an inspection-image acting as a target to automatically extract a difference between the first image data and the second image data, by allowing a computer execute a process comprising:

• a storage step for storing the reference-image and the inspection-image;
• an image processing step for establishing correspondences between at least a part of the stored reference-image as the first image data with at least a part of the stored target image as the second image data at the pixel level to perform an image matching processing of them;
• a difference detecting step for comparing the image-matched first and second image data to detect a difference between the first and second image data;
• and
• an image inspecting step for producing a plurality of image data by comparing the difference with a plurality of threshold values, each of the image data including a plurality of pixels defining a single image, by fluctuating the threshold value at each partial region, to the detected difference to thereby perform an image inspecting process.