Re: Multi-Touch Screen Monitors


Subject: Re: Multi-Touch Screen Monitors
From: Ryan Supak (ryansupak@gmail.com)
Date: Wed Oct 26 2005 - 12:53:26 EDT


The Fingerworks Touchstream Keyboard (this company is now defunct also) has
decent multitouch resolution, and it attempts to estimate pressure as well.

rs

On 10/26/05, Kenneth Newby <knewby@sfu.ca> wrote:
>
> Anyone who programs much in MaxMSP or many other graphics programs are
> used to the practice of nudging with single pixel accuracy. I
> personally found the low resolution of the (now defunct?) Tactex touch
> pad to be a severe limitation to its usefulness for detailed gestural
> or higher resolution purposes.
>
> Kenneth.
>
>
> On 26-Oct-05, at 7:57 AM, Richard Wentk wrote:
>
> > At 15:41 26/10/2005, you wrote:
> >> My mouse pointer is two pixels by two pixels, my finger is 38 by 51
> >> (give or take a couple of years). It's possibly a hammer replacing a
> >> jeweler's screwdriver.
> >
> > It's not impossibly hard to add movement analysis and intrapolation to
> > get a more-or-less single pixel fix from a blobby finger.
> >
> > Also if the cursor is being used to control a slider or dial, you only
> > need enough precision to make the movement feel natural. (Which is
> > what the Lemur does. The Lemur's physical touch resolution is much
> > lower than the pixel resolution of the display.)
> >
> > In practice you hardly ever, if at all, need pixel-accurate two-axis
> > location from an on-screen cursor. Usually you can quantise it to some
> > near-enough variant that matches the controls or information on the
> > display.
> >
> > Richard
> >
> >
> >
> >
> _________________________________
> Kenneth Newby Computational Poetics
> School for Interactive Arts & Technology
> Simon Fraser University
> Integrated Media - Emily Carr Institute
> 7 7 8 . 8 5 8 . 0 3 5 9
> _________________________________
>
>
>



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