[opendtv] Re: (No Date: Tue, 28 Sep 2004 10:30:37 -0400

  • From: Craig Birkmaier <craig@xxxxxxxxx>
  • To: opendtv@xxxxxxxxxxxxx
  • Date: Wed, 3 Nov 2004 08:29:57 -0400

At 4:24 PM -0500 11/2/04, Cliff Benham wrote:
>Everybody go read this,
>http://www.ph.unimelb.edu.au/~jpc/physics/A%20beginners%20guide%20to%20th=
>e%20human%20field%20of%20view.pdf
>'A Beginner's Guide to the Human Field of View' by John B. Costella=20
>and then read this,
>http://www.hitl.washington.edu/publications/r-95-5/
>Widening the Field-of-View Increases the Sense of Presence in Immersive =
>Virtual Environments
>by J.D. Prothero and H.G. Hoffman
>
>then come back here and argue some more.

The first link did not work, but there was enough info there to find 
the paper. It is quite interesting, but does not add much information 
to this debate, other than the suggestion that the horizontal field 
of view may only be 150-160 degrees rather than 180 degrees, which 
moves us back to something closer to the square/circle  field of view 
we have been discussing.

The second link also tells use very little that is not already 
obvious. One could extrapolate that the sensation of realism will 
continue to increase until the entire field-of view is covered. It is 
completely logical that the sensation would improve when you go from 
70-80 degrees to 150 or more. Again, there is no info here on 
vertical field of view.

Both of these papers are based in research for head mounted or other 
forms of immersive displays. This is a very different world than TV 
displays, as Brian Park would quickly tell us.

There is no illusion that an HDTV viewing experience is an immersive 
experience. When the viewing conditions are optimal, the display will 
cover no more than about 30 degrees of our field of view. What is 
different about HDTV is that the display is now large enough that 
eye-tracking is induced, which is an important first step toward the 
illusion of "being there."

Regards
Craig
 
 
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