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Jing Liang,Ming Ronnier Luo,Maria Georgoula,Nianyu Zou 한국색채학회 2017 AIC 2017 Jeju Vol.2017 No.10
MacAdam data have been well known in the colour-difference research field. It has been used for defining the tolerance for the white lights in the lighting industry. This paper describes two separate experiments carried out at Leeds university (UK) and Zhejiang university (China) respectively. Both experiments were conducted to assess colour-differences using Eizo displays using the ratio method. Each centre included 21 samples assessed against a grey and a black background, respectively. The difference between the two experiments are the sample pair used. Leeds university had all samples selected from CIE u’v’ chromaticity diagram and Zhejiang university selected from CIELAB space. These data were used to test colour difference equations and colour spaces. The result should that both present datasets disagreed with MacAdam data greatly.
Modelling Atmosphere Perceptions of Dynamic Coloured Lightings
Qiyan Zhai,Bing Li,J. B. Hutchings,Fangtian Ying,Ming Ronnier Luo 한국색채학회 2017 AIC 2017 Jeju Vol.2017 No.10
This study investigates the atmosphere perception of dynamic coloured lighting in a living room with multi-channel tuneable LED luminaires. Thirty Chinese observers evaluated 36 light conditions (2 luminance, 2 chroma, 3 hue range types, 3 speeds) using a questionnaire of 25 response scales. Four atmosphere factors, coziness, spaciousness, liveliness and warmth, were extracted and modelled based on the lighting parameters.