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Article #929Re: Human Factors: Paper-Like Interface
From: Gary L. Newell
Date: Sun, 15 Jan 1989 22:10
Date: Sun, 15 Jan 1989 22:10
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1559 bytes
In article <911@scubed.UUCP>, warner@s3snorkel.ARPA (Ken Warner) writes: > >There has been quite a bit of work at IBM T.J. Watson Research in the last > >two years on Gestural Interfaces. The use of a transparent tablet over a > >flat display seems to be optimal for such a paper/pen like interface. It > > What about the problem of paralax? Good question - it is a major problem, but one which it would seem might be overcome with new hardware advances, in the not too distant future - but in the short term and in experimental work, it is a reasonable alternative to have the user indicate the angle of viewing (by touching three or more displayed points, for example) and use a linear transform for the electronic inking. Of course, this compensation goes out the window if the user moves...... I'm not too familiar with state of the art transparent tablets, but I know that there are some in use that have a distance of 0.177 of an inch between the display plane and the stylus tip - if this distance is decreased even more, it would seem a viable input method. gary newell
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Path: arc1-ca.pugleaf.net!utzoo!utgpu!attcan!uunet!lll-winken!ames!pasteur!agate!bionet!ig!arizona!gln From: gln@arizona.edu (Gary L. Newell) Newsgroups: comp.cog-eng Subject: Re: Human Factors: Paper-Like Interface Summary: parallax Message-ID: <8719@megaron.arizona.edu> Date: 15 Jan 89 22:10:49 GMT References: <316@cui.UUCP> <2690009@hpdsla.HP.COM> <8710@megaron.arizona.edu> <911@scubed.UUCP> Organization: U of Arizona CS Dept, Tucson Lines: 22