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John Cupitt 2017-11-14 16:44:15 +00:00
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The-DZI-File-Format.md

@ -4,7 +4,7 @@ When creating a DZI image, you specify a size, format, and overlap. The [convers
Note that tile overlaps are on both sides of the join, so a one pixel overlap (for example) means tiles 0_0 and 1_0 have two columns of pixels in common. Note that tile overlaps are on both sides of the join, so a one pixel overlap (for example) means tiles 0_0 and 1_0 have two columns of pixels in common.
The tile size is usually chosen so that non-edge tiles are a power of two along the side. With overlap one and tile size 254, tile 0_0 will be 255x255, but all no-edge tiles will be 256x256. The tile size is usually chosen so that non-edge tiles are a power of two along the side. With overlap one and tile size 254, tile 0_0 will be 255x255, but all non-edge tiles will be 256x256.
Tiles are written even if they contribute no new pixels to the image. With overlap one, for example, you can have a two-pixel edge tile which simply repeats pixels in the previous tile. Tiles are written even if they contribute no new pixels to the image. With overlap one, for example, you can have a two-pixel edge tile which simply repeats pixels in the previous tile.