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Updated The DZI File Format (markdown)

Ian Gilman 2017-11-13 11:47:08 -08:00
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The-DZI-File-Format.md

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For a general overview, see https://msdn.microsoft.com/en-us/library/cc645077(VS.95).aspx.
When creating a DZI image, you specify a size, format, and overlap. The conversion tool then goes through the image, breaking it into tiles. It starts with the full resolution image, and starts creating tiles from the upper left corner, with the first tile being 0_0, the next in the top row being 1_0, etc. The first tile on the next row is 0_1, etc. This becomes the highest level.
When creating a DZI image, you specify a size, format, and overlap. The [conversion tool](http://openseadragon.github.io/examples/creating-zooming-images/) then goes through the image, breaking it into tiles. It starts with the full resolution image, and starts creating tiles from the upper left corner, with the first tile being 0_0, the next in the top row being 1_0, etc. The first tile on the next row is 0_1, etc. This becomes the highest level.
The tool then scales the image down to half width and runs through and tiles it again, using the same numbering system. This becomes the next level.