Thomas de Groot wrote:
> I have not been able to get the stereoscope working. 

Cross your eyes hard, then slowly relax until the middle pair merge. 
Then relax the focus and you'll see it in stereo.

It's probably easier to practice with a simpler picture, like a line 
drawing of a hypercube projection or so.

I'm not sure what the software is supposed to do to it?

-- 
   Darren New / San Diego, CA, USA (PST)
"You're going to be late for your meeting."
      "That's OK. I can be late."
"What's it about?"
      "Someone else's problems."

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I had good luck with this (for the first time) today.

I held a pencil up about half way between my eyes and the screen, on the 
line between the two pictures.  When I looked at the pencil I noticed a 
small slice of "overlap" picture appeared.  By moving the pencil (in my 
case towards me) I was able to enlarge this center image until it was 
full size.  Once I had it I was able to slip the pencil down and enjoy 
the image.

Which is very cool by the way.  Nice work!


Darren New wrote:
> Thomas de Groot wrote:
> 
>> I have not been able to get the stereoscope working. 
> 
> 
> Cross your eyes hard, then slowly relax until the middle pair merge. 
> Then relax the focus and you'll see it in stereo.
> 
> It's probably easier to practice with a simpler picture, like a line 
> drawing of a hypercube projection or so.
> 
> I'm not sure what the software is supposed to do to it?
>

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"Darren New" <dne### [at] sanrrcom> schreef in bericht
news:4300c2ce$1@news.povray.org...
> Thomas de Groot wrote:
> > I have not been able to get the stereoscope working.
>
> Cross your eyes hard, then slowly relax until the middle pair merge.
> Then relax the focus and you'll see it in stereo.
>

I know the technique, the point is that I have not even been able to get an
image on my screen! :-(

Thomas

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"Darren New" <dne### [at] sanrrcom> schreef in bericht
news:4300c2ce$1@news.povray.org...
> Thomas de Groot wrote:
> > I have not been able to get the stereoscope working.
>
> Cross your eyes hard, then slowly relax until the middle pair merge.
> Then relax the focus and you'll see it in stereo.
>
> It's probably easier to practice with a simpler picture, like a line
> drawing of a hypercube projection or so.
>
> I'm not sure what the software is supposed to do to it?
>

Just my stupidity!!! :-(
Just discovered that I could open the jps files with PaintShopPro! I thought
I needed the software...
Well...crossing my eyes... I was fairly good at that when I worked with
aereal photographs... Gave me headaches too...
Ok, have to try again.

Thomas

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On Tue, 16 Aug 2005 11:22:33 +0200, "Thomas de Groot"
<t.d### [at] internlnet> wrote:

>
>"Darren New" <dne### [at] sanrrcom> schreef in bericht
>news:4300c2ce$1@news.povray.org...
>> Thomas de Groot wrote:
>> > I have not been able to get the stereoscope working.
>>
>> Cross your eyes hard, then slowly relax until the middle pair merge.
>> Then relax the focus and you'll see it in stereo.
>>
>> It's probably easier to practice with a simpler picture, like a line
>> drawing of a hypercube projection or so.
>>
>> I'm not sure what the software is supposed to do to it?
>>
>
>Just my stupidity!!! :-(
>Just discovered that I could open the jps files with PaintShopPro! I thought
>I needed the software...
>Well...crossing my eyes... I was fairly good at that when I worked with
>aereal photographs... Gave me headaches too...
>Ok, have to try again.
>
>Thomas
>

I changed the extension to bmp and it "worked first time"

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Thomas de Groot wrote:
> I know the technique, the point is that I have not even been able to get an
> image on my screen! :-(

Oh! Save the file, and change the extension to .jpg. :-)  I'm assuming 
".jps" means stereo jpeg or some such.

As for getting headaches, it just takes practice. I learned with 
printed-out vector drawings of complex 3D circular functions. Stuff like 
you see on an oscilloscope, but in 3D, so you could follow it around 
with your eyes. Still have some here somewhere, if the thermal paper 
hasn't turned completely black. :-)

-- 
   Darren New / San Diego, CA, USA (PST)
"You're going to be late for your meeting."
      "That's OK. I can be late."
"What's it about?"
      "Someone else's problems."

Post a reply to this message

Darren New <dne### [at] sanrrcom> wrote:
> Thomas de Groot wrote:
> > I have not been able to get the stereoscope working.
>
> Cross your eyes hard, then slowly relax until the middle pair merge.
> Then relax the focus and you'll see it in stereo.
>
> It's probably easier to practice with a simpler picture, like a line
> drawing of a hypercube projection or so.

Yes.

> I'm not sure what the software is supposed to do to it?

The various stereoscope programs display the stereo data in a variety of
formats, by converting 'on the fly'. The basic .jps format is setup for
naked-eye cross-eyed viewing. The other main naked-eye format is wide-eyed
for parallel viewing; this format is also suitable for viewing with a
traditional-style stereoscope. For naked eye viewing, I prefer wide-eyed
for smaller images, but larger images need to be viewed cross-eyed.

The stereoscope software can also generate various anaglyphs and also
formats suitable for use with various LCD shutter glasses. Petersik's Java
applet also allows use of a mirror: one image on the screen is
mirror-imaged and a mirror is held vertically between the two images. One
eye sees the direct image on the screen, the other eye looks in the mirror.
This method makes fusing the two images very easy, but the reflected image
will not be as bright as the direct image.

The point of using .jps & .pns files is to keep the stereo viewing options
open, rather than having to force everyone to use the one viewing method,
or keeping multiple versions in different formats on your hard drive.

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"Thomas de Groot" <t.d### [at] internlnet> wrote:
> "Darren New" <dne### [at] sanrrcom> schreef in bericht
> news:4300c2ce$1@news.povray.org...
> > Thomas de Groot wrote:
> > > I have not been able to get the stereoscope working.
> >
> > Cross your eyes hard, then slowly relax until the middle pair merge.
> > Then relax the focus and you'll see it in stereo.
> >
> > It's probably easier to practice with a simpler picture, like a line
> > drawing of a hypercube projection or so.
> >
> > I'm not sure what the software is supposed to do to it?
> >
>
> Just my stupidity!!! :-(
> Just discovered that I could open the jps files with PaintShopPro! I thought
> I needed the software...

Couldn't you even see the preview image? Hmmm...

> Well...crossing my eyes... I was fairly good at that when I worked with
> aereal photographs... Gave me headaches too...

I would expect a geologist to be expert at free-fusion of stereo pairs. :)

Wide-eyed viewing tends to produce less eyestrain than cross-eyed, but most
people find it hard to converge the larger wide-eyed pairs.

> Ok, have to try again.

Good luck!

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"PM 2Ring" <nomail@nomail> schreef in bericht
news:web.4303eec1b9d4c122ad93754b0@news.povray.org...
> > Just my stupidity!!! :-(
> > Just discovered that I could open the jps files with PaintShopPro! I
thought
> > I needed the software...
>
> Couldn't you even see the preview image? Hmmm...

As I tried to say, my brain sometimes takes a vacation and leaves me blank
:-)

>
> > Well...crossing my eyes... I was fairly good at that when I worked with
> > aereal photographs... Gave me headaches too...
>
> I would expect a geologist to be expert at free-fusion of stereo pairs. :)

Absolutely! But I have not used aerial photographs for many years now, and
practice has become somewhat rusty.

Thomas

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Kepler proposed that the distance relationships between the six planets known at
that time could be understood in terms of the five Platonic solids.

Actually his model and book explains little if only that their orbits were
inside one another.
And the function is still called, SolveKepler,
original data :
 from Keith Burnett translated a few times.

My question is, what should he be known for? Something that is not this ....
sort of mechanical meditation in which he engaged, while attepmting to discover
the equations ...

If he was any kind of mathematician his model could have looked like this.
#macro SolveKepler(M,ec)
  #local E = M;
  #local d = E - ec * sin(E) - M;
  #while (abs(d) > 0.00000001)
    #local delta = d / (1.0 - ec * cos(E));
    #local E = E - delta;
    #local d = E - ec * sin(E) - M;
  #end
E
#end

#macro orbital(id)
 #if (id)
  #local M = days * radians(val(elements[id][5]));
  #local p = radians(val(elements[id][3]));
  #local M = M + radians(val(elements[id][7])) - p;
  #local e = val(elements[id][6]);
  #local E = SolveKepler(M, e);
  #local r = IDS(au2km(val(elements[id][4]))) * (1.0 - e * cos(E));
  #local vv = 2.0 * atan(sqrt((1.0 + e) / (1.0 - e)) * tan(E / 2.0));
  #local o = radians(val(elements[id][2]));
  #local i = radians(val(elements[id][1]));

  #local vv = vv + p - o;
  #local e = sin(vv);
  #local p = sin(o);
  #local o = cos(o);
  #local vv = cos(vv);
  #local M = cos(i);
  #local _v = <r * (o * vv - p * e * M), r * e * sin(i), r * (p * vv + o * e *
M)>;

  #local result = pop_matrix4(orbitmatrix,_v);
 #else #local result = <0,0,0>;#end
 result
#end
//    0      1             2             3           4          5            6
        7
//Epoch,inclination, ascending node, perihelion, axis au, daily
motion,eccentricity, longitude,
// size-earthrads, name, host-id
/*

composite -depth 8 -stereo keplerR.png keplerL.png kepler.png

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