[Blindmath] A 3d to 2d description resource?

[Michael Whapples]

Are you sure you have never encountered a picture of a tree in a 2D 
representation? The VOICE uses a 2D representation from what I know (stereo 
headphones, left and right, vertical position pitch in sound). So you tell 
us what a tree is like in 2D compared to the act of feeling it.

I guess though one difficulty is the difference in a drawing and a photo, 
the latter may differ depending on lighting conditions and so you may find 
dark patches in different places depending on where the light is coming from 
and so how the shadows form on it. Depending on the purpose of the drawing 
and the detail given some things like the shadow may be ignored or there may 
just be representations of a feature rather than an accurate reproduction 
(eg. lines representing the texture of the bark, the bark may have much 
greater detail in its texture).

Michael Whapples

-----Original Message----- 
From: Pranav Lal
Sent: Tuesday, January 31, 2012 1:35 AM
To: blindmath at nfbnet.org
Subject: [Blindmath] A 3d to 2d description resource?

Hi all,

Would it be worth creating a database that listed descriptions of 3d objects
in 2d space? Take my example of a tree. I have felt trees before and can
even see their pictures with the vOICe but how do I map that to the 2d
space? I suspect View Plus already has such a collection but there is no
reference to 3d since SVG is 2d.

Of course, if there is a general approach in mathematics of converting 3d to
2d then all we would need to do is to write about it with some examples and
see if that helps anyone.
Pranav


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