procedure for the allocation of a farbindikation to picture elements in a farbeproduktionssystem

摘要

A method of selectively assigning to a picture element to be imaged with a colour reproduction system a pertinent indication relating to the distinguishing of colour in respect of such picture element. For this purpose, on the basis of the associated parameter values related to colour saturation and intensity, a choice is first made for that picture element from a pertinent indication of a colourless behaviour, a pertinent indication of colour behaviour, and a provisional indication concerning an undefined colour behaviour. In the case of a picture element having a provisional indication, this indication is then converted to a pertinent indication on the basis of the results of an environmental analysis concerning the distribution state of parameter values related to the colour space in respect of picture elements occurring within an environment of the associated picture element. According to this method, pastel hues can be reproduced in a logical and perceptually acceptable manner despite the presence of scanner noise. IMAGE