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Python Imaging Library is a free and open-source additional library for the Python programming language that adds support for opening, manipulating, and saving many different image file formats. It is available for Windows, Mac OS X and Linux. The latest version of PIL is 1.1.7, was released in September 2009 and supports Python 1.5.2–2.7. [3]
The intended purpose was to create an open source lossless compression method that was faster and easier to implement than PNG.Figures specified in the blog post announcing the format claim 20-50 times faster encoding, and 3-4 times faster decoding speed compared to PNG, with similar file sizes. [1]
Project OpenImageIO started as ImageIO - an API that was part of Gelato, the renderer software developed by nVidia.Work on ImageIO started in 2002. In the same year the specification of the API and its header files was released under BSD license.
RawTherapee is a free and open source application for processing photographs in raw image formats such as those created by many digital cameras. [5] It comprises a subset of image editing operations specifically aimed at non-destructive post-production of raw photos and is primarily focused on improving a photographer's workflow by facilitating the handling of large numbers of images.
The format supports an optional alpha channel like PNG (but unlike JPEG); and progressive coding, similar to PNG (unlike it, progressive compression doesn't increase file-size), but as FLIF's algorithm is more complex (and partly, may not have had as much tuning of the implementation yet), it has a higher computational cost; at least lower ...
The very simple viewer is installed as RAW Image Viewer, supports some lossless operations, and can save raw images as BMP, JPEG, PNG, or TIFF. [ 65 ] FastRawViewer is a dedicated raw viewer that runs on Mac and Microsoft Windows, and currently claims to support all raw formats except Foveon.
PNG was developed as an improved, non-patented replacement for Graphics Interchange Format (GIF)—unofficially, the initials PNG stood for the recursive acronym "PNG's not GIF". [ 6 ] PNG supports palette-based images (with palettes of 24-bit RGB or 32-bit RGBA colors), grayscale images (with or without an alpha channel for transparency), and ...
The ASCII ("plain") formats allow for human readability and easy transfer to other platforms; the binary ("raw") formats are easier to parse by programs and more efficient in file size. In the binary formats, PBM uses 1 bit per pixel, PGM uses 8 or 16 bits per pixel, and PPM uses 24 or 48 bits per pixel: 8/16 for red, 8/16 for green, 8/16 for blue.