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Re: SV-3 review: super-bright

--- "Thad E. Starner"
<> wrote:
> 
> I've been arguing that head-up displays should do
> "autochromaticity" (adapting the computer
display
> foreground to provide highest contrast with
ambient
> environment) as well as  autobrightness and
> autofocus.  As far as ease of implementation  I
> suspect
> 
> autobrightness is easier than autochromaticity is
> easier than autofocus

AutoBrightness is ease and cheap tod. I assume you
mean like that that PDA does and agesting the display
brightness for the ambient light.  Just need a light
sensor and simple 'program'  

Autochromaticity isn't much harder but need more
expensive hardware.  You need to tell what color is
behind the screen.  Sensor only need to be 1 pixel
probity, though that one pixel needs to match whats
under the display.   If you try to adjust the colors
on a per pixel bases your text will look like static
as I found out in my wearable GUI testing.  If you're
just displaying Black and white text you might be able
to get away with per character coloring but then why
have a color HMD in the first place?

Autofucos is going to be the hard one to actuly do
though the EyeTap camera  appears to get around it by
useing a laser to draw the image onto the eyes and not
have a focus.   I don't know of any why to tell how
far out the eye in focused but this is a problem for
VR.  The indtrodution here
http://atwww.hhi.de/~blick/Papers/eye-gaze/eye-gaze.html
sees to do a good jog explaining it.  I just jAugment
is going to need focal blurring.  

> 
> yet I suspect that as far as importance:
> 
> autofocus more important than autobrightness more
> important than autochromaticity 
> 
> or, maybe autobrightness should be first
> 
> In actuality, I'm sure, like Rhodes says, "it
> depends on the application"
> 
> 					  Thad
> 
> -------------------------
> I'd like to see this with options for fixing the
> backlight other than
> white (in a see-through package).
> For example, in an outdoor augmented reality
> situation, with a hazy blue
> sky, I won't see white text, but I may see red
(like
> the Nomad).
> So 10 shades of red would be useful.
> But during a sunset Blue could be preferable, and
> magenta when in the
> jungle, et
> 
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=====
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/o o\"We are all crazy here. This is the wearable nut house.
(>_<)The walls are soft but the soldering irons are hot."
 `-'   -- Doug Sutherland 06 Dec 2000

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