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PGM
Portable Gray Map
Portable Gray Map (PGM) is a file format for grayscale images. It is a lowest common denominator grayscale file format that most image processing programs can read and write.
Main usage
PGM is used for storing images such as X-ray images, medical images, and other scientific images.
- 8-bit grayscale
- 1-bit black and white
- 24-bit RGB color
Main features
SGI
Silicon Graphics Image
Silicon Graphics Image (SGI) is a raster graphics file format used mainly on Silicon Graphics workstations and, to a lesser extent, on other platforms.
Main usage
SGI is mainly used for scientific and technical applications, such as medical imaging, computer-aided design, and 3D rendering.
- High color depth
- High resolution
- Compression