ABSTRACT
The reproduction of colour in digital imaging systems is a complex operation. The reproduction of the digital image from an output imaging device is essentially the physical rendering of the encoded intensities to produce a 'colour image'. Colour gamuts vary between systems and media and are strongly influenced by the viewing conditions, i.e. illumination, surround and background. The digital encoding method specifies the relationship between continuous colour space values and the corresponding encoded values. The encoding range is essentially the range of digital code values that are available and relates directly to the bit-depth characteristics. Images encoded to original-referred colour encoding have coordinates that are representative of colour coordinates of a two-dimensional hard-copy image. Colour characterization is concerned with defining the relationship between device-dependent colour coordinates and the corresponding device-independent, CIE colori- metric coordinates. Colour space transformation can be achieved using multidimensional look-up-tables that map device- dependent to device-independent colour coordinates, and vice versa.
