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PPM
Portable Pixmap
Portable Pixmap (PPM) is an image file format used to store and transfer bitmap images. It is a lowest common denominator color image file format that is supported by virtually all image-manipulation programs.
Main usage
PPM is commonly used for storing and transferring images on the internet, as well as for creating and editing images in image-editing programs.
- RGB color model
- 8-bit color depth
- lossless compression
Main features
JP2
JPEG 2000
JPEG 2000 (JP2) is an image compression standard and coding system. It was created by the Joint Photographic Experts Group committee in 2000 with the intention of superseding their original discrete cosine transform-based JPEG standard (created in 1992) with a newly designed, wavelet-based method.
Main usage
JPEG 2000 is commonly used for digital image archiving and for the transmission and storage of medical images, such as X-rays and ultrasounds.
- Lossless and lossy compression
- High compression ratios
- High image quality
- Support for transparency and alpha channels
- Support for multiple resolutions