Silicon Graphics Image
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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
Common file extensions are:
.sgi
or.rgb
- 3 colour channels
.rgba
- 3 colour channels and alpha
.bw
or.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
References
- ↑ .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.
- ↑ 3.0 3.1 3.2 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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