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What causes items crossing the top or bottom borders to be seen
as window violations is that items in violation of the window get
occluded (i.e. cut off or covered by the substance of the frame)
when they should remain visible because they are closer than the
BUT because there are no depth clues in the purely horizontal
parts of the frame we have no information about the shape of the
frame. It could be bowed inwards towards us, so that person
standing outside the window is quite naturally cut off even though
they are closer that the left and right vertical edges of the
frame. So window violations are not so disturbing at the top or
Now, if we make it absolutely clear tat the frame is flat - by
adding captions, for instance - the violation becomes all too
There have been a number of artists that have brought objects in
violation of the window in through the window and continued
the objects over the frame so the object is not occluded by
the frame. And now there is no window violation!
On 21/06/2020 13:02, Antonio F.G. via
On Sat, Jun 20, 2020 at 11:37 AM, Stereopix Net wrote:
To contribute to this discussion of the WV I have just shot two
stereo pairs with a tree branch protruding inside the window.
objects that were close to or even touching the top or
bottom edges would not cause a violation unless they also
crossed the left or right edge, in which case it would be
a left or right edge violation, not top or bottom. It
would not be possible to have a top edge or bottom edge
window violation unless the images were vertically
misaligned (out-of-register in the vertical direction such
that one eye-view image was either higher or lower than
This opposition is clearly a terminology problem
concerning what means a window violation (WV).
If you consider that the WV is the rivalry caused by a
part of the content in front that should be displayed
outside of the medium for the other eye (of course you can
view this with an other viewpoint), then there cannot be
WV on top/bottom.
It looks like it is your definition because of the
exception you gave for the tome/bottom edge wrongly
aligned that create rivalries.
In one case the branch does not interfere with any border, so
there is clearly no WV.
In the other case the same branch is cropped by the upper border,
and I invite you to consider whether is there WV or not. IMO there
is no WV technically, but... for some reason the effect is not
NO WV: https://stereopix.net/photo:9ON3DHJQNV/
WV arguable: https://stereopix.net/photo:9ON3DOLGU0/