Improvement of accuracy of ICC profile by means of analysis of multidomain colour space

Abstract

The investigation focuses on development of colour information transformation model which takes into account different importance of different domains of colour space depending on the aim of the colour reproduction process and types of print production. The methods of creating the multidimensional colour look-up tables of colour imaging devices are proposed. Namely, the method for direct mapping device-dependent colour space to device-independent based on spline approximation of the data from original test chart taking into account the local non-uniformities in the colour space and criterion of the transformation accuracy. This method reduced the errors during reproduction memorable colours and important for scene colours. We also proposed a combined method of reverse mapping device-independent colour space to device-dependent device signals taking into account the decomposition of the space on the priority area of colour reproduction. Both these methods allow reducing error during the process of transformation of colour coordinates of images within the reproduction process.