C2
Prof. Dr. Gegenfurtner

On the origin of color categories

Planned research

Project C2 combines psychophysics, modeling and neuroimaging to obtain a unified account for the origin of color categories and their relationship to object and material categories that are defined by features that link perceptual modalities. We use psychophysical experiments and modelling to test whether color categories are systematically related to object and material classes. Through an fMRI study we investigate the neuronal basis for the interaction between color perception and categorization.

Current research

Project C2 combines psychophysics, modeling and neuroimaging to obtain a unified account for the processes that shape color categories and the effect they have on perception. It is tested whether existing color categories are an adaptation to the distribution of colors caused by objects in our environment and their modulation by early sensory processes. The neuronal basis of color categories will be investigated by determining the invariance of color responses using neuroimaging. The effect of color categories on perception will be determined through the salience of particular colors for eye movements.

new project-related publications
Akbarinia, A., & Gegenfurtner, K. R. (2018). Color metamerism and the structure of illuminant space. JOSA A, 35(4), B231-B238. find paper
Ennis, R., Schiller, F., Toscani, M., & Gegenfurtner, K. R. (2018). Hyperspectral database of fruits and vegetables. JOSA A, 35(4), B256-B266. find paper DOI
Flachot, A., & Gegenfurtner, K. R. (2018). Processing of chromatic information in a deep convolutional neural network. JOSA A, 35(4), B334-B346. find paper
Flachot, A., & Gegenfurtner, K. R. (2021). Color for object recognition: Hue and chroma sensitivity in the deep features of convolutional neural networks. Vision Research, 182, 89-100. find paper
Flachot, A., Akbarinia, A., Schütt, H. H., Fleming, R. W., Wichmann, F. A., & Gegenfurtner, K. R. (2020). Deep Neural Models for color discrimination and color constancy. arXiv preprint arXiv:2012.14402. find paper
Koenderink, J., van Doorn, A., & Gegenfurtner, K. (2018a). Area Dominates Edge in Pointillistic Colour. i-Perception, 9(4), 2041669518788582. find paper DOI
Koenderink, J., van Doorn, A., & Gegenfurtner, K. (2018b). Graininess of RGB-Display Space. i-Perception, 9(5), 2041669518803971. find paper DOI
Koenderink, J., van Doorn, A., & Gegenfurtner, K. (2018c). Color weight photometry. Vision research, 151, 88-98. find paper DOI
Koenderink, J., van Doorn, A., & Gegenfurtner, K. (2019). Colour Order. i-Perception, 10(5), 2041669519872516. find paper
Koenderink, J., van Doorn, A., & Gegenfurtner, K.R. (2020). Color & Things. i-Perception, 11(6), 1-43. find paper
Koenderink, J., van Doorn, A., Witzel, C. & Gegenfurtner, K.R. (2020). Hues of color afterimages. i-Perception 11(1), 2041669520903553. find paper
Rogers, M., Witzel, C., Rhodes, P., & Franklin, A. (2020). Color constancy and color term knowledge are positively related in early childhood. Journal of Experimental Child Psychology, 196, 104825. find paper.
Schloss, K., & Witzel, C. (2020). Blues don't bring the blues: challenging conventional notions of color-emotion associations. Journal of the Optical Society of America A: Optics and Image Science, and Vision. find paper
Toscani, M., Guarnera, D., Guarnera, C., Hardeberg, J. Y., & Gegenfurtner, K. (2020). Three perceptual dimensions for specular and diffuse reflection. ACM Transactions on Applied Perception. find paper
Toscani, M., Milojevic, Z., Fleming, R. W., & Gegenfurtner, K. R. (2020). Color consistency in the appearance of bleached fabrics. Journal of Vision, 20(4), 11-11. find paper
Witzel, C. (2018). Misconceptions about colour categories. Review of Philosophy and Psychology, 1-42. doi:10.1007/s13164-018-0404-5 find paper
Witzel, C., & Gegenfurtner, K. R (2018a). Color Perception: Objects, Constancy, and Categories. Annual review of vision science, (0). doi:10.1146/annurev-vision-091517-034231 find paper
Witzel, C., & Gegenfurtner, K. R. (2018b). Are red, yellow, green, and blue perceptual categories?. Vision research. find paper DATA
Witzel, C., & Toscani, M. (2020). How to make a# theDress.JOSA A, 37(4), A202-A211. find paper DOI
Witzel, C., Maule, J., & Franklin, A. (2019). Red, yellow, green, and blue are not particularly colorful. Journal of Vision, 19(14), 27-27. find paper DOI
Witzel, C., Olkkonen, M., & Gegenfurtner, K. R. (2018). A Bayesian Model of the Memory Colour Effect. i-Perception, 9(3), 2041669518771715. find paper
former project-related publications
Bloj, M., Weiß, D., & Gegenfurtner, K. R. (2016). Bias effects of short-and long-term color memory for unique objects. JOSA A, 33(4), 492-500. find paper
Ennis, R., Toscani , M., & Gegenfurtner , K. R. (2017). Seeing lightness in the dark. Current Biology, 27(12), R586-R588. DOI find paper
Gegenfurtner, K. R. (2003). Cortical Mechanisms of Colour Vision. Nature Reviews Neuroscience, 4, 563-572.
Gegenfurtner, K. R., Bloj, M., & Toscani, M. (2015). The many colours of ‘the dress’. Current Biology, 25(13), R543-R544. find paper
Hamilton-Fletcher, G. D. I., Witzel, C., Reby, D., & Ward, J. (2017). Sound Properties Associated With Equiluminant Colours. Multisensory Research, 30(3-5), 337-362. find paper
Hansen, T. & Gegenfurtner, K.R. (2009). Independence of color and luminance edges in natural scenes. Visual Neuroscience, 26, 35-49.
Hansen, T. & Gegenfurtner, K.R. (2017). Color contributes to object contour perception in natural scenes. Journal of Vision, 17(3), 14-14. find paper
Hansen, T., Olkkonen, M., Walter, S. & Gegenfurtner, K. R. (2006). Memory modulates color appearance. Nature Neuroscience, 9(11), 1367–1368.
Hansen, T., Walter, S. & Gegenfurtner, K.R. (2007). Effects of spatial and temporal context on color categories and color constancy. Journal of Vision, 7(4):2, 1-15.
Koenderink, J., van Doorn, A. & Gegenfurtner, K.R. (2017). Color weight photometry Vision Research , in press. DOI find paper
Olkkonen, M., Hansen, T., & Gegenfurtner, K. R. (2009). Categorical color constancy for simulated surfaces. Journal of Vision, 9(12), 1-18.
Olkkonen, M., Witzel, C., Hansen, T., & Gegenfurtner, K. R. (2010). Categorical color constancy for real surfaces. Journal of Vision, 10(9).
Schiller, F., Valsecchi, M., & Gegenfurtner, K. (2017). An evaluation of different measures of color saturation. Vision Research, in press. DOI find paper
Toscani, M., Gegenfurtner, K. R., & Doerschner, K. (2017). Differences in illumination estimation in# thedress. Journal of Vision, 17(1), 22-22. DOI find paper
Witzel, C (2016). New Insights Into the Evolution of Color Terms or an Effect of Saturation? i-Perception, 7(5), 1-4. find paper
Witzel, C. (2016). An Easy Way to Show Memory Color Effects. i-Perception, 7(5), 1-11. DOI find paper
Witzel, C. & Gegenfurtner, K.R. (2011). Is there a lateralized category effect for color? Journal of Vision, 11(12):16.
Witzel, C., & Gegenfurtner, K. R. (2013). Categorical sensitivity to color differences. Journal of Vision, 13(7):1, 1–33. http://www.journalofvision.org/content/13/7/1
Witzel, C., & Gegenfurtner, K. R. (2015). Categorical facilitation with equally discriminable colors. Journal of vision, 15(8), 22-22. DOI find paper
Witzel, C., & Gegenfurtner, K. R. (2016). Categorical perception for red and brown. Journal of Experimental Psychology: Human Perception and Performance, Vol 42(4), Apr 2016, 540-570. DOI find paper
Witzel, C., O'Regan, J. K., & Hansmann-Roth, S. (2017). The dress and individual differences in the perception of surface properties. Vision Research, in press. find paper
Witzel, C., Olkkonen, M., & Gegenfurtner, K. R. (2016). Memory colours affect colour appearance. Behavioral and brain sciences, 39, 51-52. find paper