1. A method for displaying an image in an electronic device, the method comprising: obtaining an original image to be displayed; determining image processing information, the image processing information including at least one of illuminance information of a current environment of the electronic device and screen brightness information of the electronic device; determining a level of image transformation for controlling an amount of transformation of the original image based on the image processing information; determining a threshold value for determining a dark region corresponding to the level of the image transformation; determining at least one imperceivable region to be represented as the dark region, at a level which is less than or equal to the threshold value in the image to be displayed; transforming the original image by blacking out the determined at least one imperceivable region in the original image; and displaying the transformed image including the blacked out imperceivable region, wherein blacking out the determined at least one imperceivable region in the image comprises shutting off power supplied to pixels of a display corresponding to the at least one imperceivable region.