Graphics Reference
In-Depth Information
4.7.3 Scale
We now have our images lined up; look to the top and bottom edges of your
image, but as close to the middle of the edges as possible. (The brand logo of
the display is usually placed up or down and centered. This may help you
locate the top or bottom center.) Try to i nd the same feature in both eyes.
Are they in the same position vertically? If they are not, you have a scale
misalignment. (Figures 4.22 and 4.23) . This is typically caused by a zoom
mismatch. Scale one eye or the other (or both) to match using the center of
the picture as your pivot (for i ne-tuning you can also match position at the
top of the image and adjust scale at the bottom or vice-versa).
4.7.4 Rotation
Look at the left and right edges of your image, as close to the midpoint
of the frame edge as possible. If your scene edges are offset vertically, you
have a rotation issue. This is usually caused by a camera being slightly
rotated with respect to the other. Rotate L or R (or both) to match using
the center of the picture as your pivot (for i ne-tuning you can also match
position at one side of the image and adjust rotation at the other side). See
Figures 4.24 and 4.25.
Figure 4.22 Before Scaling Fix.
 
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