Volumetric Data Encoding Using Daubechies Wavelet Filter

Wavelet Based Image Compression using Daubechies Filters

Digitized images have replaced analog images as photographs or x-rays in many different fields. In their raw form, digital images require a tremendous memory capacity for storage and large amount of bandwidth for transmission. In the last two decades, many researchers have been devoted to develop new techniques for image compression. More recently, wavelets have become a cutting edge technology...

AI Based Low Power High Speed Daubechies Wavelet Filter Using VLSI Architecture

A novel algebraic integer (AI) based multiencoding of Daubechies-12 2-D wavelet filters having error-free integer-based computation. Digital VLSI architectures employing parallel channels are proposed, physically realized and tested. The multi-encoded AI framework allows a multiplication-free and computationally accurate architectture. It also guarantees a noise-free computation throughput the ...

Hardware Implementation of Daubechies Wavelet Transforms Using Folded Aiq Mapping

Despeckling of medical ultrasound images using Daubechies complex wavelet transform

The paper presents a novel despeckling method, based on Daubechies complex wavelet transform, for medical ultrasound images. Daubechies complex wavelet transform is used due to its approximate shift invariance property and extra information in imaginary plane of complex wavelet domain when compared to real wavelet domain. A wavelet shrinkage factor has been derived to estimate the noise-free wa...

Wavelet Coding of Medical Volumetric Data

This paper assesses the coding performance of several state-ofthe-art 3D wavelet coders and compares them with newly proposed compression methods exploiting quad-tree and blockbased coding concepts, layered zero-coding principles and context-based arithmetic coding. The discussed wavelet-based coding algorithms produce losslessly compressed embedded data streams, supporting the desired progress...