This is nice! Thank you for posting it. On Thu, Mar 5, 2015 at 4:59 PM, Charles S. Harris <xch...@gmail.com> wrote:
> Colors of the dress > Alan Gilchrist > > First note that the alternative color pairs that people see, > white/gold or blue/black, have something in common. In each case > the two colors stand in the same relationship to each other. > They differ only in the way the relationship is anchored. The > basic rule used by the human eye to anchor colors is this: The > brightest part of a scene is automatically seen as white and this > serves as the standard (or anchor) to which darker surfaces are > compared. The question is, what is meant by "the brightest part" > in this photo, the brightest part of the dress, or the brightest > part of the entire photo? In the real world, with far more context > available, everyone would see the colors in the same way. But the > limited context makes the photo ambiguous. Some observers seem to > ignore the brighter (and yellower) background, treating the dress > itself as a separate framework. They see the lighter part of the > dress as white (because it is the brightest part of the dress). > Relative to that, the darker part is gold. Other observers take > the bright background as the standard of white. Relative to that > the lighter part of the dress is blue, and the darker part is > dark gray, perhaps black. > > These two ways of seeing the dress are simulated in the two images > shown here. > http://tinyurl.com/Dress-simulation > The first image simulates the experience of people who segregate > the dress from the background. The background of the dress has > been removed and replaced by black. Here the dress appears white > and gold. The second image simulates the experience of people who > do not segment the dress from the background. Here samples of the > two colors of the dress are surrounded by the background color. > In this case, when the dress colors can only be seen in relation > to the bright background color, they appear blue and black. > > --- > You are currently subscribed to tips as: devoldercar...@gmail.com. > To unsubscribe click here: > http://fsulist.frostburg.edu/u?id=177920.a45340211ac7929163a0216244443341&n=T&l=tips&o=42630 > or send a blank email to > leave-42630-177920.a45340211ac7929163a0216244443...@fsulist.frostburg.edu > -- Carol DeVolder, Ph.D. Professor of Psychology St. Ambrose University 518 West Locust Street Davenport, Iowa 52803 563-333-6482 --- You are currently subscribed to tips as: arch...@mail-archive.com. To unsubscribe click here: http://fsulist.frostburg.edu/u?id=13090.68da6e6e5325aa33287ff385b70df5d5&n=T&l=tips&o=42632 or send a blank email to leave-42632-13090.68da6e6e5325aa33287ff385b70df...@fsulist.frostburg.edu
