Research Topics
| Franz FaulSummaryAffiliation: University of Kiel Country: Germany Publications
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Detail Information
Publications
Statistical power analyses using G*Power 3.1: tests for correlation and regression analysesFranz Faul
Christian Albrechts Universitat, Kiel, Germany
Behav Res Methods 41:1149-60. 2009..We describe these new features and provide a brief introduction to their scope and handling...
Psychophysical model of chromatic perceptual transparency based on substractive color mixtureFranz Faul
Institut fur Psychologie, Universitat Kiel, Germany
J Opt Soc Am A Opt Image Sci Vis 19:1084-95. 2002..These results show that the color relations leading to the perception of a homogeneous transparent layer conform very closely to the predictions of the new model and deviate systematically from the predictions of the additive model...- Color appearance: The limited role of chromatic surround variance in the "gamut expansion effect"Franz Faul
Institut fur Psychologie, Universitat Kiel, Germany
J Vis 8:30.1-20. 2008..These findings, particularly the latter, argue strongly against an explanation solely in terms of contrast adaptation. We suggest that the main features of our findings can be explained in terms of color scission... - G*Power 3: a flexible statistical power analysis program for the social, behavioral, and biomedical sciencesFranz Faul
Institut fur Psychologie, Christian Albrechts Universitat Kiel, Kiel, Germany
Behav Res Methods 39:175-91. 2007..Like its predecessors, G*Power 3 is free... - Disparity, motion, and color information improve gloss constancy performanceGunnar Wendt
Institute of Psychology, Kiel, Germany
J Vis 10:7. 2010..The lightness matching data only revealed an influence of motion and color information. Our results indicate, somewhat counterintuitively, that motion information has a detrimental effect on lightness constancy... - The peculiar nature of simultaneous colour contrast in uniform surroundsVebjørn Ekroll
Institut fur Psychologie, Christian Albrechts Universitat zu Kiel, Olshausenstr 62, 24118 Kiel, Germany
Vision Res 44:1765-86. 2004..A framework that systematises the seemingly complex colour appearance changes induced by uniform surrounds is presented and its implications are discussed... - The strengths of simultaneous colour contrast and the gamut expansion effect correlate across observers: evidence for a common mechanismVebjørn Ekroll
Institut fur Psychologie, Christian Albrechts Universitat zu Kiel, Olshausenstr 62, 24098 Kiel, Germany
Vision Res 51:311-22. 2011..It is suggested that this putatively common mechanism of 'crispening' accounts completely for the gamut expansion effect, and partially for the simultaneous colour contrast effect, which seems to depend on von Kries adaptation also... - New laws of simultaneous contrast?Vebjørn Ekroll
Institut fur Psychologie, Universitat Kiel, Olshausenstraße 62, 24118 Kiel, Germany
Seeing Perceiving 25:107-41. 2012.... - A simple model describes large individual differences in simultaneous colour contrastVebjørn Ekroll
Institut fur Psychologie, Christian Albrechts Universitat zu Kiel, Olshausenstr 62, 24098 Kiel, Germany
Vision Res 49:2261-72. 2009..We also argue that simultaneous contrast, the crispening effect, Meyer's effect and the gamut expansion effect are just different names for the same basic phenomenon... - Classification of apparent motion percepts based on temporal factorsVebjørn Ekroll
Institut fur Psychologie, Christian Albrechts Universitat zu Kiel, Kiel, Germany
J Vis 8:31.1-22. 2008..It is suggested that this temporal variable may be used as a cue to resolve occlusion-related ambiguities in classical motion stimuli... - Dynamic texture spreading: probing the mechanisms of surface interpolationDaniel Wollschläger
Institut für Psychologie Christian Albrechts Universittät zu Kiel, Olshausenstrasse 62 24098 Kiel, Germany
Spat Vis 19:193-218. 2006..Most of our findings are consistent with the idea of sensory persistence, and indicate that information fragments are integrated over a time window of about 100 to 180 ms to form a complete surface representation... - Perceptual transparency in neon color spreading displaysVebjørn Ekroll
Institut fur Psychologie, Christian Albrechts Universitat, Kiel, Germany
Percept Psychophys 64:945-55. 2002..This additive model correctly predicted which combinations of colors would lead to optimal impressions of transparency. Color combinations deviating slightly from the additive model also looked transparent, but less convincingly so... - Highlight disparity contributes to the authenticity and strength of perceived glossinessGunnar Wendt
Department of Psychology, Kiel, Germany
J Vis 8:14.1-10. 2008..The presence of highlight disparity lead to an enhancement of both the authenticity and the strength of perceived glossiness. The latter finding was confirmed in an additional matching experiment... - Transparency perception: the key to understanding simultaneous color contrastVebjørn Ekroll
Institut fur Psychologie, Universitat Kiel, Kiel, Germany
J Opt Soc Am A Opt Image Sci Vis 30:342-52. 2013..Here, we show that the revised laws of simultaneous color contrast are well accounted for by an alternative theory explaining the simultaneous contrast effect in terms of mechanisms subserving the perception of transparent media... 
The natural center of chromaticity space is not always achromatic: a new look at color inductionVebjørn Ekroll
Institut fur Psychologie, Universitat Kiel, Olshausenstrasse 62, D 24118 Kiel, Germany
Proc Natl Acad Sci U S A 99:13352-6. 2002..A plausible interpretation of this apparently paradoxical finding in terms of color scission is proposed...