To date, it looks like Randy George has done the most work to push the size limits of Deep Zoom images. From his blog post:
After a few minutes the result is a tiff image of 86400×43200 of about 11Gb. Now it is time to use the Deep Zoom Composer (actually a decomposer) to process this into a MultiScaleImage info.bin
When I attempted an import of this 11Gb tiff into Deep Zoom Composer, the Mermaid.exe choked after a few minutes. I guess we aren’t ready for geospatial scale exactly yet. Note to self: do this with -o Tiff, since mermaids may not like GTiff.
He then successfully creates a 16Kx16K image:
The largest mosaic I was able to get Deep Zoom Composer to accept was 8×8 or 16000px x 16000px which is just 4000m x 4000m on the ground. Feeding this 143Mb mosaic through Composer resulted in a pyramid consists of 5344 jpg files at 82.3Mb. However, scaling to a 5000m x 5000m set of 100 tif, the 221Mb mosaic, failed on import to Deep Zoom Composer.
It's unclear whether the dimensional limits are related to 32-bit Vista's 3GB memory or some maximum pixel dimensions. Does anybody know which?
Above is the actual DeepZoom result.
2 comments:
From a post by Morten Nielsen at http://www.sharpgis.net/category/Mix.aspx
"DeepZoom: This is an unmanaged part of SilverLight and not very customizable. The tilingscheme is hardcoded. You cannot create images larger than 4x4billion pixels. That's still enough for having a sub-millimeter precision image of the entire earth, so I think that should be sufficient!"
I like http://www.imagesurf.net for online deep zoom of photos.
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