by the Joint Photographic Experts Group (JPEG) in 1992. JPEG compresses images down to much smaller file sizes, and has become the most widely used image file format. JPEG was largely responsible for the wide proliferation of digital images and digital photos, with several billion JPEG images produced every day as of 2015. Lempel–Ziv–Welch (LZW) is a lossless compression algorithm developed by Abraham Lempel, Jacob Ziv and Terry Welch in 1984. It is used in the GIF format, introduced in 1987. DEFLATE, a lossless compression algorithm developed by Phil Katz and specified in 1996, is used in the Portable Network Graphics (PNG) format. The JPEG 2000 standard was developed from 1997 to 2000 by a JPEG committee chaired by Touradj Ebrahimi (later the JPEG president). In contrast to the DCT algorithm used by the original JPEG format, JPEG 2000 instead uses discrete wavelet transform (DWT) algorithms. It uses the CDF 9/7 wavelet transform (developed by Ingrid Daubechies in 1992) for its lossy compression algorithm, and the Le Gall–Tabatabai (LGT) 5/3 wavelet transform (developed by Didier Le Gall and Ali J. Tabatabai in 1988) for its lossless compression algorithm. JPEG 2000 technology, which includes the Motion JPEG 2000 extension, was selected as the video coding standard for digital cinema in 2004. Notes and references External links Image compression lecture from MIT OpenCourseWare Image Compressor tool online Image Coding Fundamentals A study about image compression with basics, comparing different compression methods like JPEG2000, JPEG and JPEG XR / HD Photo Data Compression Basics includes comparison of PNG, JPEG and JPEG-2000 formats FAQ:What is the state of the art in lossless image compression? from comp.compression IPRG an open group related to image processing research resources Advantages And Disadvantages of Image Compressor