The research presented in this paper looks at ECA’s and the influence of the color of their clothing on user perception. To perform this research an experiment was done. In the experiment two different colored versions of the same ECA told a story after which test subjects answered questions on their perception of the ECA and the contents of the story. The initial literary research gave good re...

It is well established that about 2 percent of otherwise normal human males are confusers of red and green from birth. There is considerable interest in the question: What do red-green confusers see? From a knowledge of the normal color perceptions corresponding to deuteranopic and protanopic red and green, we may not only understand better why color-blindness tests sometimes fail, and so be in...

In the State of Tennessee, the Tennessee Department of Environment and Conservation (TDEC) is the NPDES permitting authority who sets color limits for a recreational water use color narrative under the auspices of EPA review that requires effluent discharge to be free of objectionable color, but the narrative lacks numeric guidance on how to determine an acceptable discharge color. The City of ...

The reasons for the circular sense of human color perception generated by two sorts of color opponent neurons and three cone types are not well understood. Here we use geometrical analysis to examine the hypothesis that opponency, the recursive nature of color perception, and trichromacy arise as the most efficient ways of distinguishing spectrally different points on a plane using a minimum of...

The illumination of a scene strongly affects our perception of objects in that scene, e.g., the pages of a book illuminated by candlelight will appear quite yellow relative to other types of artificial illuminants. Yet at the same time, the reader still judges the pages as white, their surface color unaffected by the interplay of paper and illuminant. It has been shown empirically that we can i...

We tested whether eye color influences perception of trustworthiness. Facial photographs of 40 female and 40 male students were rated for perceived trustworthiness. Eye color had a significant effect, the brown-eyed faces being perceived as more trustworthy than the blue-eyed ones. Geometric morphometrics, however, revealed significant correlations between eye color and face shape. Thus, face s...