JPEG 2000

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JPEG 2000

A standard for compressing still images from the Joint Photographic Experts Group. Introduced in 2000, JPEG 2000 uses wavelet compression and provides greater compression ratios than the discrete cosine (DCT) method used in regular JPEG. It also takes more processing power to decode the images. JPEG 2000 supports both lossy and lossless modes, and it is noted for its "visually lossless" appearance, whereby lossy images look so good that they appear to have been compressed with a lossless method. The millions of JPEG images on the Web are regular JPEG, not JPEG 2000.

Smart Decoding
A significant feature of JPEG 2000 is that images can be decoded into different resolutions, allowing, for example, a viewer to quickly render a low-resolution image from a gigantic file that would otherwise take considerably longer. Smart decoding enables the same image file to serve multiple uses.

Motion JPEG 2000
Motion JPEG 2000 is the video version of JPEG 2000. However, unlike other movie formats, which use interframe coding to compress multiple frames, each JPEG 2000 frame is compressed independently. Motion JPEG 2000 is the standard for the d-cinema format for digital movie theaters and is commonly referred to as simply "JPEG 2000."

JPEG 2000's smart decoding is also a major advantage for digital cinema. For example, although the movie may have been mastered in 4K resolution, it can be decoded and projected at 2K without having to decode into 4K first and then downconvert into 2K afterwards. This enables the same source file to be used in different theaters. See JPEG, MPEG, wavelet compression and digital cinema.
References in periodicals archive ?
To meet the needs of different users, SuperPad supports most of the spatial data formats, like vector formats GEO, SHP, DXF and raster formats TIFF, PNG, MrSID, LAN, JPG2000, etc.
Our plans include: Assessment of compliance of JPG or JPEG2000 driver~s license photographs to the ICAO ISO/IEC 19794-5 standard; Assessment of the likelihood of identical identity by facial recognition comparison between twofold JPG or JPG2000 driver~s license photograph sets, a new photo and an older photo, with an age spread of 5 to 10 years.
Images were compressed during the capture process, in the multilayered JPG2000 format, and were saved on a compact disc.
Tanto para la compresion en JPG2000 como para la transformacion de color y despues de evaluar diversas aplicaciones y los resultados de las mismas, utilizamos Adobe[R] Photoshop[R], estableciendo unos umbrales predefinidos en base a un estudio cualitativo previo en laboratorio sobre el nivel de percepcion de los detalles y errores generados por la compresion en la imagen, siendo dicho umbral de un 80% de compresion en formato JPEG2000.
Este resultado conlleva que podamos diferenciar entre estimulos positivos, y que podriamos agrupar como aquellas imagenes a color de elevadas resoluciones o niveles de compresion bajos y que permitan observar los detalles de las mismas sin errores ostensibles; y estimulos negativos, imagenes en escala de grises, con tasas de compresion en formato JPG2000 superiores al 85-90% respecto el JPG original, asi como aquellas con detalles no visibles correctamente ya sea por la distancia o resolucion de la pantalla o por el nivel de compresion utilizado.
There are some important enhancements have been introduced in this release, such as Process of digital signing of assembly has been improved, Processing of PSD file has been improved, DXF to PDF conversion process has been improved, JPG to JPG2000 format conversion process has been improved, Processing of YCBCR format has been upgraded and Processing of JPEG & TIFF formats have been improved.
8226; Converting JPG image with 300 x 300 resolution to JPG2000 format is losing resolution Improve quality of MTEXT rendering
Assessment of the likelihood of identical identity by facial recognition comparison between twofold JPG or JPG2000 driver%s license photograph sets, a new photo and an older photo, with an age spread or five to 10 years.