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- Billger, Monica, 1961, et al.
(författare)
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Colour Emotions in Sweden
- 2002
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Ingår i: International Conference on Colour Emotion Research and Application, Bangkok, Thailand, July 5–7, 2002. ; , s. 1-3
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Konferensbidrag (övrigt vetenskapligt/konstnärligt)abstract
- The Swedish part of the international project "Colour Emotion" has been carried out during the spring at the School of Architecture at Chalmers University of Technology in Gothenburg. In this paper, we will give you a summary of our preliminary results.
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| 2. |
- Billger, Monica, 1961
(författare)
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Evaluation of a colour reference box as an aid for identification of colour appearance in rooms
- 2000
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Ingår i: Color Research & Application. ; 25:3, s. 214-225
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Tidskriftsartikel (refereegranskat)abstract
- Hitherto, methods for visual assessment of colour appearance have not been developed for use in the study of rooms. We seek a practical method that allows one or two observers to characterize a room by identifying the perceived colours. Verbal descriptions are necessary, but lack precision. A magnitude estimation method may enable a more precise location in colour space. However, the need of a group of well-trained observers makes it impractical for room studies. A method involving matches between reference colour samples and the perceived room colours would be ideal. But, reference colour samples require a standard illumination; otherwise, the sample changes colour due to different room light. Hence, a method involving a colour reference box was developed. The colour reference box with its standard source of illumination provides a reference situation, where colour samples can be visually compared with the colours of the room. The study presented is an evaluation of this colour reference box. The crucial problem is that the same color sample in the box is perceived differently, as the observer adapts to various lighting conditions. The aim of the study was to investigate if these different perceptions of the samples could be described and controlled. In the study, 18 observers were asked to visually assess the hue of 15–66 samples, and mark its place in the NCS hue circle. The assessment of the samples was made in two different room lights: incandescent light and simulated daylight. The result of the study showed a clear tendency for the samples, perceived in the box, to shift colour in simulated daylight compared to incandescent light. It was concluded that the problem with the observer's adaptation to the room light can be described and controlled, although complementary studies are needed to quantify the adaptation effect with more accuracy, and to investigate differences in nuance. Thus, it seems that the colour reference box can be used to visually evaluate and describe the differences in colour appearance in different rooms. © 2000 John Wiley & Sons, Inc. Col Res Appl, 25, 214–225, 2000
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| 4. |
- Billger, Monica, 1961, et al.
(författare)
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Perception of Colour and Space in Virtual Reality: a comparison between a real room and virtual reality models
- 2004
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Ingår i: Proceedings of SPIE - The International Society for Optical Engineering. - : SPIE. - 0277-786X .- 1996-756X. ; 5292, s. 90-98
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Konferensbidrag (refereegranskat)abstract
- Virtual Reality has great potential to become a usable design tool for the planning of light and colour in buildings. The technical development has provided us with better computer graphics and faster rendering techniques. However, the reliability and usability is delimited by lack of knowledge about how humans perceive spatial colour phenomena. The setting up of parameters for material properties in light calculation software is done arbitrarily. We present a comparison between a real room and a digital model evaluated on a desktop PC and in an Immersive Projection Technology (IPT) type system. Data were collected from video recorded interviews and questionnaires. The participants assessed the appearance of light, colours and space. They also evaluated their involvement in solving this task, and their presence in each environment. Our results highlight the benefits and disadvantages of the real and virtual models. The participants had difficulties in estimating the size of both the desktop room and the room in the ITP system. The comparison of real and virtual rooms revealed unsatisfying differences in shadowing and colour appearance. We defined the magnitude of perceived colour reflections in the real room, and elaborated with some of the parameters in Lightscape/3dsmax6.
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