Visual Perception of color blending in spot lights A Teupner |
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OSR CT RI LMO, Osram GmbH, Germany
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| The objective of the project is the development of a standardized evaluation method which describes color homogeneity in light spots according to visual preferences. It is difficult to make forecasts up to which level spot lights need to have uniform character in order to match obervers' expectations. The described experiment covers several spatial color distributions integrated into spot lights. The far field homogeneity of the smoothed spots is classified by four factors: hue, chroma, pattern composition and symmetrical plane. In the experiment, the spot lights are shown successively pairwise to compare each other and state, which one appears more comfortable to the observer. Through the combination of the parameters, the majority of the effecting values is identified. First results: the asymmetric pattern, absolute number of hues and uneven pattern are more disturbing as absolute chroma, whereupon pattern symmetry has high impact. Furthermore, the level of color blending which is not perceivable compared to the reference value is detected. Subsequently, the perception is compared to mathematical color evaluation methods which show notable divergences. The results of the experiment will be the basis for new evaluation techniques based on visual preferences. |
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