Colour-difference evaluation using CRT colours. Part II: Parametric effects

A large set of colour discrimination data based upon cathode ray tube (CRT) colours was accumulated and described in Part I of this article. The exper iment was divided into 16 different phases according to different viewing p arameters studied: sample size (large and small), background (mid-gray whit e, black, gray, red, yellow, green, and blue), frame (black and no frame), and width (no gap, I-pixel, 2-pixel, and large gap) and colour (mid-gray an d black) of separations between pairs of samples. This part of the article investigates the changes of perceived colour differences caused by these va riables. In addition, investigations were made to find the results from whi ch phase agree best with results for surface colours. (C) 2001 John Wiley & Sons, Inc.