P3D Monocular Depth Cues

[Ray Zone <r3dzone@xxxxxxxxxxxxx>]

Eric Goldstein wrote:

>Why would we exclude other depth cues, such as convergence
>and/or shading, as useful tools when we shoot stereo?

Good point, Eric.  There are actually a number of monocular depth
cues by which even people who have one eye or who are stereoblind
"see" dimension.  A few of them are:

1. Scale -- relative scale as depth cue.
2. Atmosphere -- haze, diminution of tone as depth increases.
3. Occlusion -- overlapping contours or edges
4. Foreshortening

When parallax stereopsis is combined with these monocular cues for depth
the result can be a very powerful 3-D image.

Many computer "3-D" programs use strictly monocular cues in a very
effective way.  Add (parallax) binocular stereopsis to this array
of "flat" depth cues and the stereo experience can be quite dramatic.

Regards,

Ray '3-D' Zone

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