[photo-3d] Stereo Quiz results so far

["Dr. George A. Themelis" <drt-3d@xxxxxxx>]

In reference to: 
http://home.att.net/~osps/quiz.htm

Here are the results so far.

Participant        no1  no1  no3
--------------------------------------------------------
Thom Gillam        OK    X?  OK
Rory Hinnen        OK    X   OK
Mike Kersenbrock   OK    X   OK
Dan Shelley        OK    X   OK
Ron Beck            X    X    X   Need to study more!
Holger Ziegler     OK    X?  OK
Andrew Woods       OK   OK   OK   Excellent!
Phil Caine         OK    X   OK?
Lincoln            OK    X   OK
Robert J. Vaughan  OK   OK   OK   Excellent!
Bob Aldridge       OK    X   OK
Jack Colbran       OK   OK?  OK
Abram Klooswyk      ?    ?    ?   Aggghhhrrr!
M. Plecas          OK    X?   ?
Chuck Holzner      OK   OK   OK?
Paul Young         OK    X?  OK
Carlos Fernandez   OK   OK   OK   Excellent!
Jim Morman         OK    X?  OK

OK: Correct answer given without any question in my mind
X: Wrong answer given without any question in my mind
?: Not sure if the answer is right or wrong (X? means
that most probably is wrong and OK? means most probably
is right but not expressed well IMO)

Most people got no. 1 right.  Except for Ron! (Ron,
did you try to freeview this one or not?) Abram
is just a big teaser... he did not want to answer
straight in any of the three.

No. 2 seems to be puzzling.  The most common
incorrect answer is "(vertical) misalignment". 
Vertical misaligment can be caused if one camera
or lens is higher than the other or by incorrect
mounting.  Every pair of homologous points are then
displaced by the same amount.  This is not the case
in this pair!  Why?  What is really wrong?

Most people seem to understand the problem in no. 3,
which is very encouraging because this is a difficult
situation for beginners.

I give detailed answers tomorrow.

Thank you for participating!!!

George Themelis