The Mosaic effect fills a
layer with solid-color rectangles, pixelating the original image.
This effect is useful for simulating low-resolution displays and
for obscuring faces. You can also animate it for a transition. At
Best quality, the edges of the rectangles are anti-aliased.
This effect works with 8-bpc and 16-bpc color.

Original (left), and with effect applied (right)
- Horizontal/Vertical Blocks
-
The number of blocks in each row and column.
- Sharp Colors
-
Gives each tile the color of the pixel in the center of the
corresponding region in the original image. Otherwise, each tile
is given the average color of the corresponding region in the original
image.