A pixel array is provided. The pixel array includes: a plurality of color filter array (CFA) cells. Each of the plurality of CFA cells includes a plurality of CFA blocks provided along a width direction and a length direction. Each of the plurality of CFA blocks includes a first sub block and a second sub block. The first sub block includes m*n pixels having an interpolation distance of 0 during conversion into a Bayer pattern. The second sub block includes at least one pixel having the interpolation distance of 0 during conversion into the Bayer pattern among pixels outside the first sub block, where “m” and “n” are integers of at least 2. The m*n pixels of the first sub block include pixels corresponding to a first color, a second color and a third color. Respective second sub blocks of the plurality of CFA blocks form an inter-sub block in each of the plurality of CFA cells.