This paper presents a forward error correction technique that can be applied to protect JPEG2000 streams during their transmission over wireless channels with both sparse and packet error statistics. To this aim, we adopt the tools of the JPEG2000 Wireless (JPWL) standard, by introducing a method for Unequal Error Protection (UEP) and a virtual interleaving technique of the stream. All these te...

The specifications of Motion JPEG 2000 (MJ2) and related documents in the JPEG 2000 family are analyzed, to identify and assess the multiple mechanisms available for storing metadata within a MJ2 file and the types of metadata that can be so accommodated. Adequate mechanisms seem to exist for associating metadata with the production as a whole, individual tracks, and individual frames. In those...

JPEG 2000, a new international standard for still image compression, is discussed at length. A high-level introduction to the JPEG-2000 standard is given, followed by a detailed technical description of the JPEG2000 Part-1 codec. Keywords—JPEG 2000, still image compression/coding, standards.

Images typically contain smooth regions, which are easily compressed by linear transforms, and high activity regions (edges, textures), which are harder to compress. To compress the first kind, we use a “zero” encoder that has infinite context, very low capacity, and which adapts very quickly to the content. For the second, we use an “interpolation” encoder, based on neural networks, which has ...

After the Y2K crisis many futurists feared that it might take another millennium to receive the same attention the year 2000 brought to us. Fortunately, we have seen that part of the interest in the future that the turning of century and millennium provoked seems to carry on. One of the most remarkable features of this continued appeal is regional foresight, or should I say regional planning? T...

I discuss the physics reach of a fixed-target charm experiment which can reconstruct >10 charm decays, three orders of magnitude beyond the largest extant sample. Such an experiment may run at Fermilab shortly after the Year 2000. In addition to “programmatic” charm physics such as spectroscopy, lifetimes, and tests of QCD, this “Charm2000” experiment will have significant sensitivity to new ph...

The Image Reduction and Analysis Facility is a scientific image processing package widely used throughout the astronomical community. IRAF has been developed and distributed by the National Optical Astronomy Observatory in Tucson, Arizona since the early 1980’s. Other observatories and projects have written many dozens of layered external application packages. More than ten thousand journal art...

JPEG2000 is the new standard for the compression of still images. Its objective and subjective image quality performance is superior to existing standards. In this paper the Part I of the JPEG2000 standard is presented in brief, and its implementation complexity on different computer platforms is reported.

In the terms of operational calculus the probability characteristics of direct and reverse residual renewal time of alternating renewal process, where renewal time depends on life-time, are found. 1. Definitions, Motivations and Formulation of the Problem 1.1 According to [1] let’s consider a system which fails after random life-time X1 and is fully renewed after the lapse of random time Y1. Th...