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| Re: JP2 & JPEG2000 | |||
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Posted by: Jorg-Ulrich Mohnen  Date: 06-27-2010, 18:40:PM |
Hi Paul The iipimage on sourceforge is actually interesting. But it gets two things absolutely mixed up. Bless those authors. First, why tile a huge TIFF file on the server when you can compress (losslessly or lossy) a huge JPEG2000 or JP2 file as a single file. Why tile it all up. Seems like a mip-map all over again, but this time on the server and not as a mip-mapped TEX/MAP/EXR. The tiled TIFF file on the server (or called mip-mapping - Spitzer et al 1982 - nVida patent), is actually now 1.5x times the size it once was. And Second, its just an old school jpeg being served to the client. Its interesting how mis-understood these JPEG2000 and JP2 files actually are. Considering that google earth deploys these since 2004 (formerly Keyhole), and that everyone unbeknownst to them use the JPEG2000/JP2 technology d-a-i-l-y (google earth, google maps, etc). We use and actively this stuff at www.wavgen.com for over 10 years and its the s-t-u-f-f. But since the roots of JPEG2000 and JP@ are in the geospatial arena, many have adopted this for years from this industry. And many using Maya or 3D Studio or Lightwave or XSI in the geospatial arena also use JPEG2000 and JP2 in their UV Maping and texture pipelines. Not so in below the line VFX. Still searching for an apache light weight module that will serve a set of JPEG2000 or JP2 files as they are borne and stored on the server. uuugh. On Jun 27, 2010, at 2:05 PM, Paul Nendick wrote: Hello Jorg, Jorg-Ulrich Mohnen, M.Sc. MBA WavGen / Terratracer Incorporated 901 North Curson Avenue West Hollywood, CA 90046 Tel (888) 654-5615 Fax (888) 588-6743 Email jorg.mohnen@wavgen.com |
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