In this paper, we address the problem of scrambling regions of interest in a video sequence. We target applications such as video surveillance preserving privacy, anonymous video communications, or TV news safeguarding the anonymity of a source. We propose an efficient solution based on transform-domain scrambling. More specifically, the sign of selected transform coefficients is flipped during...

Recognizing that new image compression techniques provide only marginal improvement in pure rate-distortion performance, JPEG 2000 was designed to offer new features. One of the goals of the JPEG 2000 image compression standard is to allow random access of portions of an image at user specified resolutions. The JPEG 2000 codestream provides pointers to various portions of the compressed data, a...

Although a firm benefits from the resource endowment of the partners in its alliance portfolio, research has so far concentrated on partners. This study proposes that mutual conditions of network resources between a firm and its partners – the compatibility of underlying resources, including physical and R&D resources, strategy, status, and the complementarity of technology – have a positive re...

Prior studies have shown that the IT innovation capability, a company's ability to innovate systematically with IT, is not easily replicated (persistent), and the persistence tends to be more pronounced during periods when economy-wide IT budgets are declining (hard IT budgets), such the post-Y2K period. Building on resource based view we argue that companies that systematically innovate with I...

This publication proposes a strategy to enhance the compression performance of Motion-JPEG2000 by the reduction of interframe redundancies. This is achieved by a new frame structure allowing to remove redundancies and to reconstruct the original stream without loss. The introduced advancement is able to increase the compression e ciency and keeps other bene cial property of the traditional code...

0 7 4 0 7 4 5 9 / 0 0 / $ 1 0 . 0 0 © 2 0 0 0 I E E E ground. We agree with F.G. Harold’s concept of “optimal heterophily”1 and use the term software engineering to include information technology. Y2K presented a formidable (albeit welldefined) challenge: find the date problems and fix them (see our “Congratulations” in the accompanying sidebar). Post-Y2K presents a more formidable challenge: a...

Image transmission with JPEG2000 can be speeded up by using regions of interest (RoIs). By such a mechanism, parts of an image not belonging to RoIs can be transmitted later or encoded at a lower bit rate. This paper describes a flexible dynamic RoI-scheme which supports the definition and handling of arbitrarily-shaped RoIs in JPEG2000. The scheme supports the dynamic definition and prioritiza...

Mainstream Information Technology professionals have misunderstood the Pick environment for many years. The Pick environment has been conceived, designed and built with business solutions as its key driver. At its heyday there were over 3,000 business applications available across a very wide range of hardware platforms supporting from 1 to thousands of real time users. The tentative economic r...

With the increasing use of multimedia technologies, image compression requires higher performance as well as new features. To address this need in the speci®c area of still image encoding, a new standard is currently being developed, the JPEG2000. It is not only intended to provide rate-distortion and subjective image quality performance superior to existing standards, but also to provide funct...