Image processing apparatus which separates images into groups based on image pickup condition information to perform a corection on images using a same image restoration filter with respect to each group, image pickup apparatus, image processing method and storage medium

An image pickup apparatus comprising:

• an image pickup element that images an optical image of an object formed by an image pickup optical system;
• a memory that stores an optical transfer function;
• one or more processors;
• and
• a storage medium including instructions that when executed by the one or more processors, cause the one or more processors to;
• read a plurality of images imaged by the image pickup element;
• analyze header information of the plurality of images to acquire image pickup condition information of each of the plurality of images;
• generate an image restoration filter from the optical transfer function on the basis of the image pickup condition information so as to correct the plurality of images using the image restoration filter;
• and
• separate the plurality of images into a plurality of groups based on the image pickup condition information to correct images included in each group using a same image restoration filter with respect to each group.

An image processing method comprising the steps of:

• acquiring a plurality of images;
• analyze header information of the plurality of images to acquire image pickup condition information of each of the plurality of images;
• acquiring an optical transfer function on the basis of the image pickup condition information;
• generating an image restoration filter from the optical transfer function on the basis of the image pickup condition information so as to correct the plurality of images using the image restoration filter;
• and
• separating the plurality of images into a plurality of groups based on the image pickup condition information to correct images included in each group using a same image restoration filter with respect to each group.

A non-transitory computer-readable storage medium configured to store a computer program that enables a computer to execute image processing,

• wherein the image processing includes the steps of:
• acquiring a plurality of images;
• analyze header information of the plurality of images to acquire image pickup condition information of each of the plurality of images;
• acquiring an optical transfer function on the basis of the image pickup condition information;
• generating an image restoration filter from the optical transfer function on the basis of the image pickup condition information so as to correct the plurality of images using the image restoration filter;
• and
• separating the plurality of images into a plurality of groups based on the image pickup condition information to correct images included in each group using a same image restoration filter with respect to each group.