1. A method of obtaining region-of-interest information and/or cognitive information from eye images comprising images of an eye and a part around the eye, comprising: establishing a database of eye image samples constituted by eye images, wherein the database of eye image samples is configured by creating an artificial eye image through modeling, or is configured using eye images obtained by photographing a real eye; extracting an eye code of each of the eye image samples stored in the database; establishing a characteristic eye library comprising the extracted eye codes of the respective eye image samples and region-of-interest information and/or cognitive information provided to each of the eye image samples, wherein the region-of-interest information regarding the eye image comprises a region occupied by an object forming the eye image and a boundary thereof, and/or a user's target region in the eye image and a boundary thereof, wherein the region-of-interest information regarding the eye image comprises a region occupied by an object forming the eye image and a boundary thereof, and/or a user's target region in the eye image and a boundary thereof; extracting an eye code of a new eye image, region-of-interest information and/or cognitive information of which will be extracted; matching the eye code of the new eye image to the most similar eye code by comparing the eye code of the new eye image with the eye codes stored in the characteristic eye library; and transferring the region-of-interest information and/or the cognitive information of the matched eye code to the new eye image.