Colour appearance modelling between physical samples and their representation on large liquid crystal display

摘要

The use of large displays for purposes of colour communication is becoming increasingly popular and the need for high-fidelity reproduction of appearance is becoming even more demanding. In this work, the colour appearance of the ColorChecker chart was matched on a large liquid crystal display (LCD) and a comparison between the physical colours and the displayed image was made. Colour definition and colour perception spaces were used to derive appearance models that define the difference between the digital and physical stimuli. The procedure was repeated using a selection of coloured garments as stimuli. The results revealed a good agreement in the defining the appearance difference between digital and physical stimuli. In both cases the difference in lightness between the two media was found to be responsible for the variation in matching. This outcome was used to develop a colour-rendering chain for the display. The use of appearance modelling in the digital image reproduction chain enhanced the appearance of solid paint-coated surfaces and dyed-garment images.