Image Compression: A Study of the Iterated Transform Method PDF Download
Are you looking for read ebook online? Search for your book and save it on your Kindle device, PC, phones or tablets. Download Image Compression: A Study of the Iterated Transform Method PDF full book. Access full book title Image Compression: A Study of the Iterated Transform Method by . Download full books in PDF and EPUB format.
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 15
Get Book Here
Book Description
This paper presents results from an image compression scheme based on iterated transforms. Results are examined as a function of several encoding parameters including maximum allowed scale factor, number of domains, resolution of scale and offset values, minimum range size, and target fidelity. The performance of the algorithm, evaluated by means of fidelity versus the amount of compression, is compared with an adaptive discrete cosine transform image compression method over a wide range of compressions.
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 15
Get Book Here
Book Description
This paper presents results from an image compression scheme based on iterated transforms. Results are examined as a function of several encoding parameters including maximum allowed scale factor, number of domains, resolution of scale and offset values, minimum range size, and target fidelity. The performance of the algorithm, evaluated by means of fidelity versus the amount of compression, is compared with an adaptive discrete cosine transform image compression method over a wide range of compressions.
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 30
Get Book Here
Book Description
The objectives of this research were to present in a clear manner an algorithm based on iterated transforms that can be used to compress grayscale images and demonstrate the algorithm and present results for various images. The theoretical framework for iterated transform image compression has been generalized to include noncontractive transforms. The method has been used to encode the 512 x 512 8-bpp image of Lena at a compression of 15.9:1 with the decode image having a root mean square error of 6.33 (32.1 dB). Other images have been encoded at various encoding conditions with the resulting compressions ranging from 10:1 to 63:1. It was shown that the relaxation of the contractivity constraint can lead to improvement in the fidelity of decoded images.
Author: Glenna L. Boyle
Publisher:
ISBN:
Category :
Languages : en
Pages : 182
Get Book Here
Book Description
Author: Yuval Fisher
Publisher: Springer Science & Business Media
ISBN: 1461224721
Category : Mathematics
Languages : en
Pages : 347
Get Book Here
Book Description
One half of the book is authored by Yuval Fisher himself, while articles from another 12 experts in the field present material from different points of view. The focus here is solely on fractal image encoding, with the aim of providing a working code that is usable in applications, while containing the complete details of how to encode and decode images. An indispensable "how to" guide, combining the very latest results in the field. Of interest to a very wide audience, ranging from experts in image processing to high school students.
Author: James A. Storer
Publisher: Springer Science & Business Media
ISBN: 1461535964
Category : Technology & Engineering
Languages : en
Pages : 355
Get Book Here
Book Description
James A. Storer Computer Science Dept. Brandeis University Waltham, MA 02254 Data compression is the process of encoding a body of data to reduce stor age requirements. With Lossless compression, data can be decompressed to be identical to the original, whereas with lossy compression, decompressed data may be an acceptable approximation (according to some fidelity criterion) to the original. For example, with digitized video, it may only be necessary that the decompressed video look as good as the original to the human eye. The two primary functions of data compression are: Storage: The capacity of a storage device can be effectively increased with data compression software or hardware that compresses a body of data on its way to the storage device and decompress it when it is retrieved. Communications: The bandwidth of a digital communication link can be effectively increased by compressing data at the sending end and decom pressing data at the receiving end. Here it can be crucial that compression and decompression can be performed in real time.
Author: Mauro Barni
Publisher: CRC Press
ISBN: 1420018833
Category : Technology & Engineering
Languages : en
Pages : 456
Get Book Here
Book Description
Although it's true that image compression research is a mature field, continued improvements in computing power and image representation tools keep the field spry. Faster processors enable previously intractable compression algorithms and schemes, and certainly the demand for highly portable high-quality images will not abate. Document and Image Compression highlights the current state of the field along with the most probable and promising future research directions for image coding. Organized into three broad sections, the book examines the currently available techniques, future directions, and techniques for specific classes of images. It begins with an introduction to multiresolution image representation, advanced coding and modeling techniques, and the basics of perceptual image coding. This leads to discussions of the JPEG 2000 and JPEG-LS standards, lossless coding, and fractal image compression. New directions are highlighted that involve image coding and representation paradigms beyond the wavelet-based framework, the use of redundant dictionaries, the distributed source coding paradigm, and novel data-hiding techniques. The book concludes with techniques developed for classes of images where the general-purpose algorithms fail, such as for binary images and shapes, compound documents, remote sensing images, medical images, and VLSI layout image data. Contributed by international experts, Document and Image Compression gathers the latest and most important developments in image coding into a single, convenient, and authoritative source.
Author:
Publisher:
ISBN:
Category : Naval research
Languages : en
Pages : 292
Get Book Here
Book Description
Author: Stephen T. Welstead
Publisher: SPIE Press
ISBN: 9780819435033
Category : Technology & Engineering
Languages : en
Pages : 264
Get Book Here
Book Description
Interest in image compression for internet and other multimedia applications has spurred research into compression techniques that will increase storage capabilities and transmission speed. This tutorial provides a practical guide to fractal and wavelet approaches--two techniques with exciting potential. It is intended for scientists, engineers, researchers, and students. It provides both introductory information and implementation details. Three Windows-compatible software systems are included so that readers can explore the new technologies in depth. Complete C/C++ source code is provided, enabling readers to go beyond the accompanying software. The mathematical presentation is accessible to advanced undergraduate or beginning graduate students in technical fields.
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 39
Get Book Here
Book Description
A new classification technique based on archetypes can reduce encoding time and still maintain compression and fidelity. The use of different metrics has shown little differences in the final encoding quality thus implying that the use of the root mean square metric is preferred. Also presented are Digital Terrain Elevation Database (DTED) that are more accurate after using an iterated transform algorithm modified to encode the coastlines. The results compare favorably with an adaptive discrete cosine transformation (ADCT) and mean residual vector quantization algorithm. Additionally, results of two iterated transform algorithms for encoding 24-bit/pixel color images are presented. The first method transforms the red, green, blue (RGB) to the luminancechrominance representation before encoding, showing results similar to ADCT algorithms. The second method encodes RGB subimages directly using common transformations, and does not perform as consistently as the luminance- chrominance method. Digital Terrain Elevation Database (DTED), Archetypes, Image compression, Iterated transforms, Fractals.
Author: Horst Bunke
Publisher: World Scientific
ISBN: 981446998X
Category : Computers
Languages : en
Pages : 591
Get Book Here
Book Description
This book is a collection of scientific papers published during the last five years, showing a broad spectrum of actual research topics and techniques used to solve challenging problems in the areas of computer vision and image analysis. The book will appeal to researchers, technicians and graduate students.
