1. A method of image processing for executing an image analysis by the use of an image representing an object, wherein the improvement comprises that the image has image processing information, on image processing which the image has undergone, attached thereto, and the method comprises the steps of obtaining the image processing information attached to the image from the image, correcting the image on the basis of the image processing information so that the image approaches to an image optimal to the image analysis and executing the image analysis by the use of the corrected image.