I have downloaded and watched this video now. It is indeed the correct one. The demonstration I had remembered as being so striking appears at about 32:00. There a lots of other fascinating and counterintuitive demonstrations as well, including Land himself getting a full color image from just red and white light (at about 17:00).
You can find it at http://xhgc18.blogspot.com/2007/07/bbc-horizon-colourful-notions.html but it is in 7 parts. You can download them for free, but it is a painfully slow process. If you pay about $6 for a 3-day "premium" account (though Paypal), it speeds up considerably. Chris Green York U. Toronto ============== Arlie Belliveau wrote: > > Could the movie you're thinking of be a BBC documentary called > "Colourful Notions" from 1985? > this is the only link I could find: > http://ftvdb.bfi.org.uk/sift/title/172610 > > Cheers, > Arlie > > 2008/8/30 Christopher D. Green <[EMAIL PROTECTED] > <mailto:[EMAIL PROTECTED]>> > > > Years ago (about 1986) I saw a great film on color perception from > the perspective of the (controversial) retinex theory of Edwin > Land. It had a truly stunning scene in which one is shown one of > Land's "Mondrian" displays, and attention is drawn to a green > square within it. Then a mask is dropped into the projector so > that all but this one square is blocked from view, and we see that > in isolation it appears pink, and that the original apparent green > color was created by the influence of the colors surrounding it. > Whatever one thinks of retinex (and most perceptionists despise > it), it is a fabulous demonstration of the maleability of color > perception in the "real" world (as opposed to in splendid > Helmholtzian laboratory isolation) and can generate a good class > discussion of how the phenomenon came to be. Unfortunately, I do > not recall the name of hte film and have never seen it again. Does > anyone else know? > > Regards, > Chris > -- > > Christopher D. Green > Department of Psychology > York University > Toronto, ON M3J 1P3 > Canada > > > > 416-736-2100 ex. 66164 > [EMAIL PROTECTED] <mailto:[EMAIL PROTECTED]> > http://www.yorku.ca/christo/ > > ================================== > > > Gerald Peterson wrote: >> Tipsters: I am planning on re-vamping my Intro psych material on color. >> I always like to challenge students to think more carefully about what is >> taken for granted in their perceptual experience. Color perception presents >> a door for some interesting discussion--namely, where is color? Many psych >> texts like to point out that color perception is the perceptual product of >> the brain's handling of reflected wavelengths and that color is not in the >> object. I don't think this view is entirely adequate, as it implies that >> the intrinsic features of the viewed object is without color or not >> importantly (and adaptively) tied to the perception. I am not aware of an >> adequately integrated and accepted theory in this area. I am not a >> Sensation and Perception specialist but enjoy getting students to think >> about these issues. I would like to point to an on-line source for >> explanation, answers to this question, or further discussion of this topic >> and would appreciate a >> ny help tipsters may provide. I also use this class discussion to >> further examine the principle of parsimony. Thanks, Gary Peterson >> >> Gerald L. (Gary) Peterson, Ph.D. >> Professor, Psychology >> Saginaw Valley State University >> University Center, MI 48710 >> 989-964-4491 >> [EMAIL PROTECTED] <mailto:[EMAIL PROTECTED]> >> >> > > --- To make changes to your subscription contact: Bill Southerly ([EMAIL PROTECTED])
