Cross-media colour management via the Internet

In recent year, the need of high performance computer is being increased and with the development of these high performance computers and communication networks, people can send their information to others or can obtain information from others via Internet or other kinds of information networks. Among these information, image data play an important role and take great part of the information. However, due to device dependency and dissimilar environment, people can't assure whether the image they get from network has the same colour as the original one or not. The goal of this research was to develop a general methodology for colour management of pictorial images across media via the Internet. The following works had been accomplished: circle Definition of a reference colour space, CIELAB for accurate colour rendition. circle Derivation of device characterisation models for a monitor, a scanner, and a printer. circle Development of an image-dependent gamut-mapping strategy. This strategy employs image reproduction principles based on the input image data present. The strategy utilizes contrast-boosting lightness rescaling, followed by chroma-scaling procedures.