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libjpeg is a free library with functions for handling the JPEG image data format. It implements a JPEG codec (encoding and decoding) alongside various utilities for ...
Continuously varied JPEG compression (between Q=100 and Q=1) for an abdominal CT scan. JPEG (/ ˈ dʒ eɪ p ɛ ɡ / JAY-peg, short for Joint Photographic Experts Group and sometimes retroactively referred to as JPEG 1) [2] [3] is a commonly used method of lossy compression for digital images, particularly for those images produced by digital photography.
OpenJPEG is an open-source library to encode and decode JPEG 2000 images. As of version 2.1 released in April 2014, it is officially conformant with the JPEG 2000 Part-1 standard. [3]
JPEG XT (ISO/IEC 18477) is an image compression standard which specifies backward-compatible extensions of the base JPEG standard (ISO/IEC 10918-1 and ITU Rec. T.81).. JPEG XT extends JPEG with support for higher integer bit depths, high dynamic range imaging and floating-point coding, lossless coding, alpha channel coding, and an extensible file format based on JFIF.
The original libjpeg is released by the Independent JPEG Group, which is now at version 9.1, and that is the title and subject of this article. Guido Vollbeding 16:20, 10 August 2014 (UTC) 1) Please don't import disputes from German Wikipedia to here. 2) libjpeg-turbo is a Fork. It's quite common on Wikipedia to discuss forks in the same ...
Typically, compressions using lossless operation mode can achieve around 2:1 compression ratio for color images. [5] This mode is quite popular in the medical imaging field, and defined as an option in DNG standard, but otherwise it is not very widely used because of complexity of doing arithmetics on 10, 12, or 14bpp values on typical embedded 32-bit processor and a little resulting gain in ...
Jpegtran is part of libjpeg. A package called littleutils contains a script called opt-jpg that automates JPEG optimization, using jpegtran as the underlying engine. JPEG files can also be losslessly optimized with JPGExtra , which removes all hidden "extras" (or metadata ) from the files without affecting the image data.
Thomas G. Lane is a computer scientist dedicated to open-source software.In a 2000 survey, he was listed as one of the top 10 contributors to an intended-to-be-representative sample of open-source software, having contributed 0.782% of the total code.