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- Newsgroups: comp.sys.sgi
- Path: sparky!uunet!zaphod.mps.ohio-state.edu!darwin.sura.net!sgiblab!sgigate!odin!fido!zola!tweezers!portuesi
- From: portuesi@tweezers.esd.sgi.com (Michael Portuesi)
- Subject: Re: Help: Graphics formats on SGI
- Message-ID: <pm9cin4@zola.esd.sgi.com>
- Sender: news@zola.esd.sgi.com (Net News)
- Organization: Silicon Graphics, Inc. Mountain View, CA
- References: <56046@olivea.atc.olivetti.com>
- Date: Thu, 10 Sep 92 17:23:48 GMT
- Lines: 51
-
-
- In article <56046@olivea.atc.olivetti.com>, marcoc@strobe.ATC.Olivetti.Com writes:
- > Quick help requested for a possible software design activity.
- >
- > I need to process on another hardware 256 gray or color
- > images generated by Silicon Graphics applications, converting
- > them in TIFF format before processing.
- >
- > 1) In which format the images generated from SG graphics
- > libraries are normally written?
-
- This depends on the library you use. Most images on SGI
- systems are created using the SGI libimage library, and
- are in what I like to call "classic SGI" format.
-
- The source code for this library, and several image tools
- which use it, are freely available in the 4Dgifts
- software package on your system (see /usr/people/4Dgifts).
- The programs "fromtiff" and "totiff" (also freely available,
- and I believe are included in the collection) will convert
- between TIFF and the classic SGI image format.
-
- SGI also offers a full-featured image processing toolkit
- called the ImageVision Library. ImageVision supports the
- classic SGI image file format, as well as TIFF.
-
- ImageVision is a very poweful and capable library.
- Depending on what your needs are, you might do better to
- process the images on your IRIS using ImageVision
- applications rather than use other hardware. If the
- images are being initially produced using SGI-based
- applications, you would be able to avoid file transfers
- and format conversions entirely.
-
- The next major release of the library (IL 2.0) will take
- advantage of multiprocessor systems, as well as any
- special features available in our graphics hardware to
- accelerate image processing. If you have multiple
- processors, a VGX series system, or especially
- RealityEngine, you might get far better performance using
- ImageVision than with other hardware.
-
- The ImageVision Library is not bundled with the system,
- but I believe it is available for around $500 (Of course,
- you also need a development environment, such as C, C++ or
- Fortran on your system to develop applications with it).
- Contact your sales rep or our Software Express toll-free
- number (1-800-800-7441 in the U.S.) for details.
-
- --
- Michael Portuesi Silicon Graphics, Inc. portuesi@sgi.com
-