1. An apparatus for removing red-eye in a two-dimensional (2D) image, comprising: a reference length calculating unit receiving coordinate information of an area comprising red-eye in an entire image, and determining center coordinates of the area and a reference length from the center coordinates; a pixel length calculating unit sequentially receiving each of pixels of the image, and calculating a pixel length being a distance between the each pixel and the center of the area; a section determining unit comparing the reference length with a pixel length, selecting a pixel, the pixel length of which is less than the reference length, and determining a section comprising the selected pixel among predetermined sections according to a distance from the center coordinates; and an image manipulating unit setting a brightness gain and color gain for each section, and applying the brightness gain and the color gain to correct a pixel value of the selected pixel.