A scheme for image compression that takes into account psychovisual features both in the space and frequency domains is proposed. This method involves two steps. First, a wavelet transform used in order to obtain a set of biorthogonal subclasses of images: the original image is decomposed at different scales using a pyramidal algorithm architecture. The decomposition is along the vertical and h...

In this paper, a modified version of the discrete reversible (integer-to-integer) Le Gall wavelet transform (DLGT), distinguishing itself by apparently improved space localization properties and visibly extended potential capabilities, is proposed. The key point of the proposal – ensuring full decorrelation of Le Gall wavelet coefficients across the lower scales. Based on the latter circumstanc...

in islamic mysticism by annihilation it is meant the removal of any determination, tendency of delimitation to non-delimitation and transformation of multiplicity into unity. the study of historical development of the concept of annihilation can be helpful in understanding and analyzing this fundamental doctrine of mysticism. in early mystical works extant in world of islam, hardly can one find...

The goal of this paper is to analyze the relation between the visual distinctness and the priority assigned to the information in two di2erent progressive transmission schemes: the Set Partitioning in Hierarchical Trees (SPIHT) and the Rational Embedded Wavelet Image Coding (REWIC). SPIHT assigns priority based on the mean squared-error (MSE) distortion measure. REWIC quanti;es the visual disti...

Abstract: Progressive image transmission (PIT) transmits the most significant portion of a picture, followed by its less important portions. The mechanism call be used in Web-based applications while users are browsing images. However, most PIT methods use the same pixel interpolation scheme for the entire picture, without considering the differences among image blocks. This paper analyzes the ...

An embedded image coder that provides very eeective progressive image transmission and a high degree of spatial scalability while achieving superior visual performance to SPIHT is presented. A new partitioning structure combined with scale-based wavelet weights achieves a signiicance reordering that codes more signiicant information belonging to the lower frequency bands earlier in the bitstrea...

A low entropy pyramidal image data structure suited for lossless coding and progressive transmission is proposed in this work. The new coder, called the progressively predictive pyramid (PPP) is based on the well-known Laplacian pyramid. By introducing inter-resolution predictors into the original Laplacian pyramid, we show that the entropy level in the original pyramid can be reduced significa...

This work proposes optimal image transmission over coded Orthogonal Frequency Division Multiplexing system with Low Density Parity Check Coding. The DWT based Set Partitioning in Hierarchical Trees algorithm is used for source coding of the images to be transmitted. It improves the transmission efficiency for progressive image transmission over Additive White Gaussian Noise channel. Study Work ...

Transmitting vector data over the Web is a challenging issue. Existing methods for vector delivery over the Web focus on progressive transmission techniques. Long standing problems in the formalization of dynamic generalization and the time needed for complex algorithms does not allow their implementation in real life applications. We propose a new method for data transmission over the Web base...

A view-dependent progressive mesh (VDPM) coding algorithm is proposed in this research to facilitate interactive 3D graphics streaming and browsing. The proposed algorithm splits a 3D graphics model into several partitions, progressively compresses each partition, and reorganizes topological and geometrical data to enable the transmission of visible parts with a higher priority. With the real-t...