Another use is for backward compatibility and graceful degradation : in color television, encoding color via a luminance-chrominance transform domain ( such as YUV ) means that black-and-white sets display the luminance, while ignoring the color information.
12.
K-space is a graphic matrix of an MR that represents the Fourier transform domain of an image before undergoing the Inverse Fourier transformation . The phase deviations that occur in the k-space of an MR image decide the characteristics of the ghosts that appear in the resulting image.