ray@basser.cs.su.OZ.AU (04/15/88)
>From John Haugeland, "The Nature and Plausibility of Cognitivism", Behavioural and Brain Sciences, Vol. 1, No. 2 (1978), pp 215-260 ... > ... if a hologram of an arbitrary scene is suitably illuminated with > the light from a reference object, bright spots will appear > indicating (virtually instantaneously) the presence and location of > any occurrences of the reference object in the scene (and dimmer > spots indicate "similar" objects). So some neurophysiological > holographic encoding might account for a number of perplexing > features of visual recall and recognition ... This stuff is part of AI folklore. There are many papers that discuss the philosophical implications for AI of this phenomenon (as does Haugeland's paper), or propose neural implementations of this sort of process. But what I want is a paper by somebody who has ACTUALLY PERFORMED THIS EXPERIMENT. Can anyone point me to such a paper? Raymond Lister Basser Department of Computer Science University of Sydney NSW 2006 AUSTRALIA ACSnet: ray@basser.cs.su.oz Internet: ray%basser.cs.su.oz.au@uunet.uu.net CSNET: ray%basser.cs.su.oz@csnet-relay UUCP: {uunet,hplabs,pyramid,mcvax,ukc,nttlab}!munnari!basser.cs.su.oz!ray JANET: munnari!basser.cs.su.oz!ray@ukc [Fourier-based template matching is trivial to set up on an optical workbench, and is not considered experimental AI. In character recognition, for instance, one can project a text letter through a font mask and choose the mask position corresponding to the greatest response in the Fourier plane. (Holograms can be used, but are not required when you have the optics generating real-time Fourier planes. Computer vision research usually substitutes digital FFT transforms for the optics. Fielded target-recognition systems are likely to use holograms or acoustic- wave devices because they are faster than digital techniques and more robust than complex lens systems.) Such template matching works great if the text characters are complete, isolated, and not distorted. Holographic systems storing dozens of different views of tanks and aircraft have been demonstrated. -- KIL]