Image capturing apparatus having subject cut-out function

An image processing method comprising:

• capturing a subject-including image including a subject image being an image of a subject and an image of a background under a first capturing condition;
• capturing a background image including the image of the background with no image of the subject under a second capturing condition that is substantially the same with the first capturing condition;
• performing positioning of the subject-including image and the background image;
• generating differential information indicating difference between each corresponding pair of pixels in the subject-including image and in the background image as being positioned;
• and
• extracting a subject region including the subject image from the subject-including image based on the differential information.

A computer readable medium storing a software program that causes a computer to perform image processing comprising:

• capturing a subject-including image including a subject image being an image of a subject and an image of a background under a first capturing condition;
• capturing a background image including the image of the background with no image of the subject under a second capturing condition that is substantially the same with the first capturing condition;
• performing positioning of the subject-including image and the background image;
• generating differential information indicating difference between each corresponding pair of pixels in the subject-including image and in the background image as being positioned;
• and
• extracting a subject region including the subject image from the subject-including image based on the differential information.