| 5.12. Spherize | ||
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5. Filtry zkreslení |  |
| 5.12. Spherize | ||
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5. Filtry zkreslení | |
This filter creates a kind of bubble whose size is that of the image or selection, as if the content was wrapped around a sphere.
Obrázek 17.82. Spherize filter example, with default values
Original image
„Spherize“ filter applied
![[Poznámka]](images/note.png)
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Poznámka |
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These options are described in 2 – „Common Features“. |
Radial is the default mode. See example above.
Horizontal: as if image was mapped on a vertical cylinder.
Vertical: as if image was mapped on a horizontal cylinder.
Camera angle of view (0 - 180°)
Spherical cap angle, as a fraction of the co-angle (complement angle) of view. Result is less domed as curvature decreases (100% - 0).
Interesting for negative values, which result in a hollow instead of a bump (from 1.000 to -1.000).
These interpolation methods are described in Cubic (sometimes called „Bicubic“): The color of each pixel is computed as the average color of the eight closest pixels in the original image. This usually gives the best result, but it naturally takes more time..
Drawing a selection before applying filter allows you to create another shape, such as a sphere: select Ellipse tool with the Fixed option checked; draw a circle; apply Spherize filter with the Use the selection as input selected. Invert selection and fill it with wanted background.
