High-resolution digital images that are used in geo-spatial and remote sensing technologies tend to be of large sizes, especially with newer satellite imageries that provide better than 5 m spatial resolution, and thereby consuming large storage space, large transmission bandwidth, and long transmission times. Therefore, method of compressing the archived images is required before storage and t...

Sensibility-aware image retrieval methods are presented and their performances are compared. Three systems are discussed in this paper: PCA/ICA-based method called RIM (Retrieval-aware IMage format), JPEG, and JPEG2000. In each case, a query is an image per se. Similar images are retrieved to this query. The RIM method is judged to be the best settlement in view of the retrieval performance and...

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...

JPEG2000, the international standard for still image compression, uses wavelet transform. The filters used by JPEG2000 for transformation are the 9/7 Daubechies filters and the 5/3 Le Gall filter. At present, to achieve image mirroring or rotation for images, we have to convert them back to spatial domain and proceed. This paper presents methods by which we can implement the same in the wavelet...

This work proposes a preprocessing method for image compression based on attribute filtering. This method is completely shape preserving and computationally cheap. Three filters were investigated, including one derived from the power filter of Evans and Young that removes even more perceptually unimportant information. The results from 22 images that were processed in various ways and compresse...

In this paper we report results from our comparative study of JPEG and JPEG2000 image coders using two image quality measures: Peak Signal to Noise Ratio (PSNR) as traditional objective picture quality measure, and Picture Quality Scale as perception based quantitative picture quality measure. Coders are evaluated in ratedistortion sense. The influences of different image contents and compressi...

This paper proposes a “privacy conscious” video communication system utilizing core technology of the JPEG2000 international standard for digital image data compression. The system works not only as a conventional video communication tool but also serves as an “awareness communication” tool. In addition, bit rate for transmitting video data and hardware complexity of the system are also reduced...

Le codage par transformée et décomposition en ondelettes (DO) est efficace pour coder les images hyperspectrales en suivant le standard JPEG2000 (partie 2). Toutefois la complexité du codeur EBCOT et de l’algorithme d’allocation optimale entre composantes ne permet pas son utilisation à bord d’un satellite aujourd’hui. Nous présentons une extension de l’algorithme SPIHT qui permet un codage pro...