Talk:MrSID

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[edit] Pyramid file format?

Is this just an implementation of the more generic Pyramid image file storage method where multiple resolutions of the same file are stored to speed processing time, display time, etc?

I am not an image compression technologist and know very little about the process. All I have is their tech sheet. Please look for copyright issues and expand on the encoding technique.

Mancomb 15:01, 7 October 2005 (UTC)

> Is this just an implementation of the more generic Pyramid image file

No, it is similar to JPEG 2000. The article (now?) contains a link to Wavelet compression, which explains it a little more. I'm no compression technologist, but I think the MrSID format can use decompress a subset of the data which results in a lower-quality (lower resolution) copy of the image with the benefits you describe. see also Set partitioning in hierarchical trees