1. An imaging device, comprising: a monochromatic image sensor having a first array of image pixels, wherein the image pixels in the first array of image pixels are diamond-shaped image pixels; a polychromatic image sensor comprising: a second array of image pixels, wherein the image pixels in the second array of image pixels are diamond-shaped image pixels; and a color filter array formed over the second array of image pixels and comprising red and blue color filter elements, wherein the red color filter elements are arranged to form red diagonal stripes of contiguous red color filter elements that extend diagonally from a first edge of the second array to a second edge of the second array, wherein the blue color filter elements are arranged to form blue diagonal stripes of contiguous blue color filter elements that extend diagonally from the first edge of the second array to the second edge of the second array, and wherein the red diagonal stripes alternate with the blue diagonal stripes; and processing circuitry configured to combine monochromatic image data from the monochromatic image sensor with polychromatic image data from the polychromatic image sensor to form full-color images, wherein the monochromatic image sensor and the polychromatic image sensor have an associated pixel pitch, wherein the processing circuitry interpolates missing pixel data to form the full-color images, and wherein a maximum interpolation distance is √{square root over (5)} times the pixel pitch.