Said and Pearlman’s Set Partitioning In Hierarchical Trees (SPIHT) algorithm [5] is a well-known and efficient zerotree coding algorithm. However SPIHT’s high memory requirement is a major drawback for hardware implementation. In this paper we present a color image coding algorithm which requires much less memory during coding. Consequently the implementation complexity and hardware cost can be...

In this paper, a new method for blind watermarking is used to achieve robustness against SPIHT compression methods as well as some other well known attacks such as Histogram Equalization, Gamma Correction, median noise, salt and pepper noise. The watermark is encoded via singular value decomposition and later embedded. Then we apply discrete wavelet transform (Haar) at one level and the waterma...

In this paper ,we present an overview of the implementation of navel compound algorithm for efficient low bit rate lossy and ROI lossless Mix Coding of massive three dimensional images. Moreover the compound algorithm can be used for multitasking Remote Sensing field operations and efficient 3-D image transmission applications such as overall image viewing at low bit rate lossy coding , nearly ...

We present an algorithm that compresses two-dimensional data arrays, which are piece-wise smooth in one direction and have oscillatory events in the other direction. Seismic and hyperspectral data have this mixed structure. The transform part of the compression process is an algorithm that combines wavelet and the local cosine transform (LCT). The quantization and the entropy coding parts in th...

BACKGROUND Recently, there has been increasing interest in the development of wireless home sleep staging systems that allow the patient to be monitored remotely while remaining in the comfort of their home. However, transmitting large amount of Polysomnography (PSG) data over the Internet is an important issue needed to be considered. In this work, we aim to reduce the amount of PSG data which...

This paper presents a listless variant of a modified three-dimensional (3D)-block coding algorithm suitable for medical image compression. A higher degree of correlation is achieved by using a 3D hybrid transform. The 3D hybrid transform is performed by a wavelet transform in the spatial dimension and a Karhunen-Loueve transform in the spectral dimension. The 3D transformed coefficients are arr...