1. An image displaying method, comprising: acquiring an image upon receipt of a request for displaying the image; locating in the image an image region composed of at least three continuously adjoining monochromatic sections; when a difference in color value between any two adjacent sections of the adjoining monochromatic sections in the image region is less than a threshold value, calculating one or more target color values based on color values of the monochromatic sections in the image region; replacing color values of the image region in the image with the one or more target color values to generate a target image; and displaying the target image, wherein each of the monochromatic sections comprises a plurality of adjoining pixels.