Comments on: Version 0.9.6 of the IIPImage Server Released http://www.c10n.info/archives/433 All about the most recent compression techniques, algorithms, patents, products, tools and events. Sat, 13 Mar 2010 17:46:02 +0000 http://wordpress.org/?v=2.6 By: Ruven http://www.c10n.info/archives/433#comment-18397 Ruven Fri, 11 Aug 2006 17:12:54 +0000 http://www.c10n.info/archives/433#comment-18397 A tiled format allows us to extract a subsection of an image without having to decode and send the entire image. The pyramidal structure also avoids having to read full-size images if the client only requests a smaller view. Sure, a format with progressive resolution (as opposed to progressive quality like JPEG) could replace the pyramidal structure. JPEG2000 supports this kind of progressive resolution and we're looking to integrate support for this into IIPImage in the future. Dynamic recompression is not strictly required, but it's included so that the client can set it's own compression level to optimize bandwidth use. A tiled format allows us to extract a subsection of an image without having to decode and send the entire image.

The pyramidal structure also avoids having to read full-size images if the client only requests a smaller view. Sure, a format with progressive resolution (as opposed to progressive quality like JPEG) could replace the pyramidal structure. JPEG2000 supports this kind of progressive resolution and we’re looking to integrate support for this into IIPImage in the future.

Dynamic recompression is not strictly required, but it’s included so that the client can set it’s own compression level to optimize bandwidth use.

]]> By: Sim http://www.c10n.info/archives/433#comment-18335 Sim Fri, 11 Aug 2006 06:41:01 +0000 http://www.c10n.info/archives/433#comment-18335 and won't need dynamic recompression. and won’t need dynamic recompression.

]]> By: Sim http://www.c10n.info/archives/433#comment-18334 Sim Fri, 11 Aug 2006 06:39:09 +0000 http://www.c10n.info/archives/433#comment-18334 I read the website and paper, why does it use tiles and pyramidal tiffs? Will it not be easier and better if something like this is built using a progressive format? Then it won't need pyramidal images. I read the website and paper, why does it use tiles and pyramidal tiffs? Will it not be easier and better if something like this is built using a progressive format?

Then it won’t need pyramidal images.

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