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3D Gugle
User's Guide
(Sphere)
With this LAB it is possible to correct the sphericity and other distortion
errors of photographic lenses and to make distortions for general graphics,
animations and lenticular applications.
In general it can be affirmed that it is impossible to create a stereo image
from two images (left, right) which have errors in the sphericity.
A stereo image can be created only from two plain images without any sphericity.
To activate the Lab select in the menu "Image" "Transform" and then "Sphere".
The two scrolls bars "
X" and "Y" center the image in the screen. This function is required so as to always have the maximum visibility but the scroll’s values don't play any part in the calculation of the sphericity.The two scrolls bars, "
Rot X" and "Rot Y" modify the center point of the sphere calculation.The scroll bar "r" represents the radius of the sphere, the normal value is
-100.
For values smaller than -100 the sphere is convex while for the higher values it
is normal.
With the scroll bar "Zoom" it is possible to modify the dimensions of the image.
In the menu "Colours All"
you can select the single colour or all colours to which to apply the
transformation.
In the menu "Mode Sphere" you can select the type of transformation to apply.
The little buttons
are to reset the default value of the corresponding scroll.Examples
Original image
"Swirl"
"Cylinder X"
"Barrel Y"
Example of spherical deformations.
| Rot X left | Rot X Right |
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| Rot Y Up | Rot Y Down |
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| r= -200 | r = 30 |
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See also
Perspective
,
Free
to apply free deformations.
Algorithms To Layers many types of deformations with automatic generation of
the intermediate frames for animation or lenticular applications.
