1. A method for synthesizing a substantially rectangular spectral representation based on a plurality of image capture device sensor outputs, the plurality of image capture device sensor outputs being a result of an input spectrum of an image adapted to be captured by an image capture device, the method comprising: providing the plurality of image capture device sensor outputs, wherein each image capture device sensor output is associated with a corresponding image capture device spectral sensitivity; determining a first wavelength and a second wavelength of the substantially rectangular spectral representation based on the plurality of image capture device sensor outputs; and computing a scale factor based on any one of the image capture device sensor outputs and its corresponding image capture device spectral sensitivity to synthesize the substantially rectangular spectral representation based on the plurality of image capture device sensor outputs, wherein: the synthesized substantially rectangular spectral representation is adapted to produce the plurality of image capture device sensor outputs if applied to the image capture device, and the first wavelength comprises a wavelength where the substantially rectangular spectral representation transitions from zero to the scale factor and the second wavelength comprises a wavelength where the substantially rectangular spectral representation transitions from the scale factor to zero.