Cognitive Science and Visual Processing

German Research Foundation funds project for optimized color representation

2023/08/28 by

The Laboratory of Adaptive Lighting System and Visual Processing, headed by Prof. Khanh, is working on a groundbreaking development in the field of future LED lighting systems. In a current research project of the German Research Foundation (DFG), an innovative colorimetry is being researched, which should enable an improved representation of colors under LED illumination.

The goal of the project “Multidimensional Color Preference Modeling in the Context of Subjective Lighting Quality” is to develop a new method for optimally representing the colors of objects under LED lighting systems in a way that is appropriate for preferences. Previous approaches and metrics have had the problem that they did not sufficiently take into account the individual adaptability of the human eye to different lighting conditions. As a result, the color representation of objects under different lighting conditions could not always achieve the optimal quality.

The research team aims to investigate this aspect and to study the influence of illuminance and color temperature on color preference in more detail. To this end, subjects will be asked in an experiment to view familiar colored objects under different lighting conditions and to adjust them to their preferred color representation. In addition, demographic factors such as age and gender of the participants will be analyzed to determine possible influences on individual color preference.

The data collected will serve as the basis for the development of a new color metric for the evaluation and control of future multi-channel LED systems. The researchers are using state-of-the-art analysis methods to model the ideal color location of objects and evaluate preferences in different color ranges. In addition, an extensive database of the results of international preference studies will be created in order to provide a broader basis for optimizing color representation in real-world scenarios through a meta-analysis based on these results.

The research project extends over a period of three years and includes both national and international aspects. In collaboration with Prof. Qiang Liu from the renowned Wuhan University in China, the study will also be conducted in a culturally differentiated context. Prof. Liu is contributing his expertise in the field of color science and is accompanying the trial with Chinese participants to investigate possible cultural influences on color preference.

The results of the research project have the potential to revolutionize the way colors are represented under modern LED lighting systems. Optimized color representation will allow objects to shine with their natural color intensity and presence. This will not only contribute to a more pleasing visual experience, but also have a positive impact on various fields, including architecture, interior design, art, screen display and many other applications of LED lighting systems. The researchers are confident that their findings can form the basis for new standards and guidelines in the LED lighting industry to ensure optimal color rendering and exceed user expectations.

Participation in research

Students with majors in electrical engineering, medical engineering, mechatronics, cognitive science or computer science who are interested in participating in this research are invited to contact for seminar papers, bachelor or master theses.

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