1. An image processing method, the method comprising: detecting a skin color region from an input image; taking a pixel included in the skin color region as a center pixel and determining a plurality of mask pixels located around the center pixel; calculating a difference value for each of the plurality of mask pixels, the difference value being the difference between a pixel value of a mask pixel and a pixel value of the center pixel; obtaining a first data value for each of the plurality of mask pixels based on a correction standard value, the first data value being the pixel value of a mask pixel when the difference value for the mask pixel is less than the correction standard value and the pixel value of the center pixel when the difference value for the mask pixel is the same as or greater than the correction standard value; obtaining a second data value by calculating the sum of the first data values for each of the plurality of mask pixels and dividing the sum of the first data values by the number of mask pixels; and correcting the pixel value of the center pixel according to the second data value.