Search results
Results from the WOW.Com Content Network
JPEG 2000 (JP2) is an image compression standard and coding system. It was developed from 1997 to 2000 by a Joint Photographic Experts Group committee chaired by Touradj Ebrahimi (later the JPEG president), [1] with the intention of superseding their original JPEG standard (created in 1992), which is based on a discrete cosine transform (DCT), with a newly designed, wavelet-based method.
He is also an author of EBCOT, one of the algorithms used in JPEG 2000. [2] The software library is named after Kakadu National Park. It is used by several applications, such as for example Apple Inc. QuickTime. It is also used in Google Earth and the online implementation thereof as well as Internet Archive. [3] [4] [5]
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 ] It was subsequently adopted by ImageMagick instead of JasPer in 6.8.8-2 [ 4 ] and approved as new reference software for this standard in July 2015. [ 5 ]
Grok is a computer software library to encode and decode images in the JPEG 2000 format. It is designed for stability, high performance, and low memory usage. Grok is free and open-source software released under the GNU Affero General Public License (AGPL) version 3.
J2K-Codec is a commercial library to decode JPEG 2000 images. Version 2.0 was released on 12 April 2011. [1] J2K-Codec supports decoding of different resolution levels and selective tile decoding. [2] It also supports files, produced by ADV202/ADV212 hardware chips. [3]
Hence, it is not a direct competitor to alternative image codecs like JPEG 2000 and JPEG XL or video codecs like AV1, AVC/H.264 and HEVC/H.265. Other important features are: Exact bitrate allocation: JPEG XS allows to accurately set the targeted bitrate to perfectly match the available bandwidth (also referred to as constant bitrate or CBR).
Information technology – JPEG 2000 image coding system: Wireless Part 12: 2004: ISO/IEC 15444-12: Information technology – JPEG 2000 image coding system – Part 12: ISO base media file format Part 13: 2008: ISO/IEC 15444-13: ITU-T Rec. T.812: Information technology – JPEG 2000 image coding system: An entry-level JPEG 2000 encoder Part 14 ...
The JPEG standard used for the compression coding in JFIF files does not define which color encoding is to be used for images. JFIF defines the color model to be used: either Y for greyscale, or YCbCr derived from RGB color primaries as defined in CCIR 601 (now known as Rec. ITU-R BT.601), except with a different "full range" scaling of the Y ...