Scalable encoded information, as in the JPEG 2000 standard, results in files which can be truncated at an arbitrary point and decoded. This work introduces a tractable, yet flexible model appropriate for resource management involving scalably encoded information. At its core is a function yielding a measure of “quality” of the decoded information as a function of the number of bits chosen for d...

In this work, JPEG2000 error resilience options and error concealment strategies are discussed and evaluated. Error resilience options and error concealment strategies have been employed to mimic attacks against selective / partial JPEG2000 encryption schemes. Thus the security evaluation of these selective / partial encryption schemes relies on the proper working of the JPEG2000 error concealm...

This paper presents a new method for remote and interactive browsing of long video sequences. The solution is based on interactive navigation in a scalable mega image resulting from a JPEG2000 coded keyframe-based video summary. The presented system is compliant with the new JPEG2000 part 9 “JPIP – JPEG2000 Interactivity, API and Protocol,” which lends itself to working under varying channel co...

The first step towards the design of video processors and video systems is to achieve an accurate understanding of the major video applications, including not only the fundamentals of the many video compression standards, but also the workload characteristics of those applications. Introduced in 1997, the MediaBench benchmark suite provided the first set of full application-level benchmarks for...

Summerfallow is cropland that is purposely kept out of production during a growing season to conserve soil moisture. On the Canadian Prairies, a trend to continuous cropping with a reduction in summerfallow began after the summerfallow area peaked in 1976. This study examined the impact of this land-use change on convective available potential energy (CAPE), a necessary but not sufficient condi...

Ringing artifacts arise near edges in highly compressed JPEG2000 images. This paper proposes original image ringing detection and suppression techniques. On the first stage edge detection and ringing estimation algorithms are applied to calculate the ringing map of a compressed input image. On the second stage this ringing map is utilized to adjust the smart bilateral filter for effectively pro...

This paper describes new methods for errors handling at the decoder side, when channel noise affects the transmission of the compressed stream. The proposed error detection techniques are applied to MPEG-4 standard video, but can be also used for general video and still picture standards in which Inverse Quantization clipping or resynchronization markers are present as MPEG-2, H263, H26L, JPEG ...

Combinations of inhibitors directed at the individual components of ribonucleotide reductase were studied for their effects on L1210 cell growth in culture. The combinations included pyrozoloimidazole (IMPY) plus deoxyadenosine and hydroxyurea plus deoxyadenosine. Modulators were utilized to potentiate the effects of hydroxyurea, IMPY, or deoxyadenosine. Desferal was used to modulate the activi...

INTRODUCTION One of the main strategic challenges for organizations today is to effectively manage change and stay competitive in the future. Change appears to be the only constant in contemporary business and is present in every industry and in every country (Brown & Eisenhardt, 1998). Moreover, the key area of importance, current within many organizations, is how to effectively leverage techn...