Image processing apparatus, image processing method, and program for detecting defect from image

An image processing method comprising:

• detecting a first detected region from an input image on the basis of a first detection criterion and a second detected region from the input image on the basis of a second detection criterion, wherein the first detection criterion is based on a first threshold and the second detection criterion is based on a second threshold that is smaller in value than the first threshold;
• setting, as a target image subjected to correction, an image including the first detected region, and setting, as a reference image that is referred to in a correction process, an image including the second detected region;
• setting a unit region in the detected region in each of the target image and the reference image by segmenting the detected region in each of the target image and the reference image, the unit region serving as a unit of processing in the correction process;
• setting a to-be-corrected region in the reference image;
• and
• correcting the unit region in the target image on the basis of the to-be-corrected region set in the reference image.

A non-transitory computer readable storage medium storing a program that, when executed by one or more processors, causes a computer to:

• detect a first detected region from an input image on the basis of a first detection criterion and a second detected region from the input image on the basis of a second detection criterion, wherein the first detection criterion is based on a first threshold and the second detection criterion is based on a second threshold that is smaller in value than the first threshold;
• set, as a target image subjected to correction, an image including the first detected region, and set, as a reference image that is referred to in a correction process, an image including the second detected region;
• set a unit region in the detected region in each of the target image and the reference image by segmenting the detected region in each of the target image and the reference image, the unit region serving as a unit of processing in the correction process;
• set a to-be-corrected region in the reference image;
• and
• correct the unit region in the target image on the basis of the to-be-corrected region set in the reference image.