Silicon Graphics Image
From Wikipedia, the free encyclopedia
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| Filename extension | |
|---|---|
| Internet media type | image/sgi[1] |
| Type code | '.SGI' |
| Developed by | Paul Haeberli |
| Initial release | 0.95 / 1995[2][3] |
| Latest release |
1.00
(1996) |
| Type of format | image file |
| Standard | SGI Image File Format[4] |
Silicon Graphics Image (SGI) or the RGB file format is the native raster graphics file format for Silicon Graphics workstations.[3] The format was invented by Paul Haeberli.[3] It can be run-length encoded (RLE). Among others FFmpeg and ImageMagick support this format.
Background[edit]
Common file extensions are:
.sgior.rgb- 3 colour channels
.rgba- 3 colour channels and alpha
.bwor.int- black and white
.inta- black and white and alpha
Originally developed for IRIX, XnView also accepts file extension .iris. The master files of the SVT High Definition Multi Format Test Set are SGIs.[5][6][7] Frame 200 of the ParkJoy sequence in this set (15722.sgi, 3840×2160, 47.4 MB) was used in WebP comparisons.
See also[edit]
References[edit]
- ^ .sgi MIME type not registered at IANA
- ^ Paul Haeberli (1996). "The SGI Image File Format 0.97". Silicon Graphics. Archived from the original on 2009-01-11. Retrieved 2014-03-07.
- ^ a b c James D. Murray, William vanRyper (1996-04). "Encyclopedia of Graphics File Formats, Second Edition". O'Reilly. ISBN 1-56592-161-5. Retrieved 2014-03-07. Check date values in:
|date=(help) - ^ Paul Haeberli (1996). "The SGI Image File Format 1.00". Silicon Graphics. Retrieved 2014-03-07.
- ^ Lars Haglund (2006-02). "The SVT High Definition Multi Format Test Set". SVT. Retrieved 2014-02-23. Check date values in:
|date=(help) - ^ "SVT_MultiFormat/2160p50_CgrLevels_Master_SVTdec05". Video Quality Experts Group (VQEG). 2006. Retrieved 2014-03-01.
- ^ Marta Mrak, Mislav Grgic, Murat Kunt (2010). High-Quality Visual Experience: Creation, Processing and Interactivity of High-Resolution and High-Dimensional Video Signals. Signals and Communication Technology. Springer. pp. 147–154. ISBN 978-3-642-12802-8. LCCN 2010925849.
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