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 ?
In this paper we proposed an efficient approach for compressed and encrypted domain watermarking in JPEG 2000 images using spread spectrum watermarking technique.
From it, we can observe that the DMOS expresses positive correlation for the decreasing-type distortions such as white noise and Gaussian blur, while negative correlation is responded for the increasing-type distortions such as JPEG 2000, JPEG, and fast fading.
DICOM standards previously allowed only for transfer of entire image files, where JPIP adds the capability to transport portions of JPEG 2000 images on demand, such as a low-resolution version or a region of interest within an image.
With this level of compression, JPEG 2000 is the ideal engine for mapping and transporting production and contribution-quality HD video-over-IP networks using the ubiquitous and cost-effective Gig-E network interface," said Andrew Osmond, Nevion's vice-president of engineering for Media Networks.
The images to be used are already digitised, mainly in TIFF format, but also in JPEG 2000, a newer format for representing and compressing images.
What customers are saying "Working together with Avid, we're pleased to see innovation and support for JPEG 2000 and AS-02 in Media Composer," said Chris Dee, VP of production engineering at HBO.
With JPEG 2000 compression, service providers can achieve visually and mathematically lossless compression to preserve video quality; transport streams offer the control and monitoring capabilities broadcasters are used to; and protection switching provides redundancy to ensure SLAs are adhered to.
IRVING, Texas -- NEC Corporation of America (NEC), a leading provider and integrator of advanced communication, biometrics and IT solutions, announced that NeoFace[TM], NEC's facial recognition technology, achieved the highest ranking in JPEG Compression, JPEG Compression with Inter-eye Distance Reduction, JPEG 2000 Compression and JPEG 2000 Compression with Inter-eye Distance Reduction investigations performed by the U.
The award is in recognition of Nevion's role in the standardisation and productisation of JPEG 2000 (J2K) interoperability, which is a high-quality image compression technology that is used by broadcasters for the transport of professional video over IP networks.
Mehul Kapadia, Managing Director F1 Business, Tata Communications, says, Last year we were able to showcase our broadcast capabilities by transmitting a live JPEG 2000 feed from the same Grand Prix in Singapore.
For broadcasters who require high quality and low latency but face bandwidth limitations, the VS901 series provides JPEG 2000 compression with scalable qua lity over IP networks for both SD and HD video signals.
LizardTech pioneered the MrSID([R]) technology, a powerful wavelet-based image encoder, viewer, and file format, and sits on the Technical Committee of the Open Geospatial Consortium (OGC) for the purpose of extending the capabilities of JPEG 2000 to geospatial applications, driving cross-platform interoperability and rapid Internet distribution for geospatial imagery.