This study evaluated the compressibility of multislice CT (MSCT) datasets and its dependence on (1) slice thickness and (2) the use of three-dimensional (3D) vs. 2D JPEG2000 compression methods. Five thoracic CT datasets were obtained using a 16-detector MSCT scanner with a collimation of 0.75 mm (120 kVp, 90 mAs) and reconstructed at five slice thicknesses from 0.75 to 10.0 mm. These datasets ...

In this paper, novel selective encryption image schemes based on JPEG2000 are proposed. The first one encrypts only the code-blocks corresponding to some sensitive precincts. In order to improve the security level we introduce the permutation of codeblocks contributing in the selected precincts. The idea of combining permutation and selective encryption is used in order to minimize the amount o...

JPEG2000 is the latest ISO/IEC image compression standard. It is distinct from previous standards in that it is more than an input-output filter. JPEG2000 enables decompression of many image products from a single compressed file and offers several opportunities for compressed domain processing. This paper describes the feature set of the JPEG2000 compression standard, followed by a high level ...

Delivering of medical image content to mobile/embedded devices with low storage and processing capabilities and low resolution displays is a challenging, but important task for achieving ubiquitous computing in modern hospital environments. The common approaches in industry and technical literature employ JPEG2000 compression and image streaming. Beside image compression, JPEG2000 facilitates i...

The JPEG2000 image compression standard provides many features to support interactive access to large images. These include efficient lossless and lossy compression, resolution scalability, quality scalability, region of interest coding and spatial random access. The ISO/IEC JPEG committee is in the process of finalizing the JPEG2000 Internet Protocol (JPIP) standard for interacting with JPEG20...

In this work, a steganography technique using histogram shifting for JPEG2000 compressed images is proposed. Histogram of the wavelet coefficients of each wavelet subband is calculated and shifted to embed secret image data. This embedding is performed on the peak wavelet coefficients during wavelet decomposition process of JPEG2000 encoder using Lifting scheme. Optimal Pixel Adjustment Process...

As successor to JPEG, JPEG2000 aims to realize a very low bitrate. Although JPEG2000’s rate distortion has been improved by approximately 30% against JPEG, as on most images compressed using overlapping transforms-based algorithms, one can notice visible spurious oscillations, or ringing artifacts, around the edges of a JPEG2000-compressed image. In this paper, we propose a Partial Differential...

The recent growth in personal multimedia communication devices being used for image transmission, have poised a challenge to protect such data against loss over mobile radio channels. This paper investigates several error protection schemes for robust transmission of JPEG2000 compressed imagery over mobile radio channels affected by various amounts of fading degradation. The nature of JPEG2000 ...

We discuss the possibilities and limitations of a scalable video codec based on JPEG2000. We give a review of wavelet-based motion-compensated temporal filtering (MCTF) and discuss how JPEG2000 components can be used for coding temporal subbands and motion data. At the example of a simple implementation that uses as many ingredients from JPEG2000 as possible, we discuss some issues in coding tr...