A Study On Accelerating The Encoding Process Of Fractal Image Compression
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A Study On Accelerating The Encoding Process Of Fractal Image Compression
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Author : Chang-Ching Yang
language : en
Publisher:
Release Date : 1994
A Study On Accelerating The Encoding Process Of Fractal Image Compression written by Chang-Ching Yang and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1994 with Coding theory categories.
Fractal Image Compression Using Pyramids
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Author : Huawu Lin
language : en
Publisher:
Release Date : 1997
Fractal Image Compression Using Pyramids written by Huawu Lin and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1997 with categories.
Fractal image compression is an attractive technique for image coding because of its distinct features and the low bit-rate requirement. In this research, several techniques are introduced to improve the compression performance. Fractal image compression is based on the self-similarity search of the image. The encoding process is computationally intensive. In this thesis, a pyramidal framework is proposed to reduce the encoding complexity. The encoding complexity is reduced by as much as two orders of magnitude. Because the domain-range matching is independent, parallel methods are proposed to further speed up the encoding process. As with any lossy compression schemes, one of the challenges is either to maximize the image quality at a fixed bit rate, or to minimize the rate required for a given quality. To fulfil this purpose, the constant contractive factor in conventional fractal image compression is extended to the case of nonlinear contractive functions, which lead to significantly better reconstructed images and faster decoding than the conventional fractal method. Furthermore, as digital images and video products are designed for human viewing, human visual system (HVS) models are exploited to faithfully reproduce perceptually important information and eliminate the information that the visual system cannot perceive. Based on the human visual system's nonlinear response to luminance and the visual masking effects, a perceptually appropriate metric is defined. The psychophysical raw data on the visual contrast threshold is first interpolated as a function of background luminance and visual angle, and is then used as an error upper bound for perceptually based fractal image compression. The perceptually based method produces visually better reconstructed images than the conventional method and the JPEG standard. To reduce the domain search complexity, the pyramidal search method is also extended for perceptually based fractal image compression. Practical fractal image compression is a block coding. At very low bit rates, fractal method encoded images may exhibit blocking artifacts. Based on the Laplacian pyramidal representation of the image, the thesis presents a general post-processing method to remove the blocking effects.
Fractal And Wavelet Image Compression Techniques
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Author : Stephen T. Welstead
language : en
Publisher: SPIE Press
Release Date : 1999
Fractal And Wavelet Image Compression Techniques written by Stephen T. Welstead and has been published by SPIE Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 1999 with Technology & Engineering categories.
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.
Speeding Up Fractal Audio Compression Using Moment Descriptors
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Author : Azhar Khanjar
language : en
Publisher: LAP Lambert Academic Publishing
Release Date : 2013
Speeding Up Fractal Audio Compression Using Moment Descriptors written by Azhar Khanjar and has been published by LAP Lambert Academic Publishing this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013 with categories.
The fractal compression technique had been growing rapidly during the past two decades. It is mainly studied on images. Many researchers had studied and improved the fractal image encoding and had gotten a lot of achievement. The greater success of this method when applied to images encouraged several researchers to explore its applicability on other types of data (such as on audio data). So, one can consider the fractal audio compression as an advanced step in the life cycle of the fractal coding. However, the earlier few researches in fractal based audio compression has left a great bruit about this method, primarily its long encoding time even for small audio files. So the core of this book is speeding up the encoding time by employing the moment descriptors concept to index the blocks of the domain and range pools
Fractal Image Compression
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Author : Yuval Fisher
language : en
Publisher: Springer Science & Business Media
Release Date : 2012-12-06
Fractal Image Compression written by Yuval Fisher and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012-12-06 with Mathematics categories.
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.
Fractal Image Encoding And Analysis
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Author : Yuval Fisher
language : en
Publisher: Boom Koninklijke Uitgevers
Release Date : 1998-09-17
Fractal Image Encoding And Analysis written by Yuval Fisher and has been published by Boom Koninklijke Uitgevers this book supported file pdf, txt, epub, kindle and other format this book has been release on 1998-09-17 with Computers categories.
Proceedings of the NATO Advanced Study Institute on Fractal Image Encoding and Analysis, held in Trondheim, Norway, July 8-17, 1995
Hybrid Fractal Image Compression Using Yiq Color Space And Dct
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Author : Zena H. Khalil
language : en
Publisher: LAP Lambert Academic Publishing
Release Date : 2015-03-19
Hybrid Fractal Image Compression Using Yiq Color Space And Dct written by Zena H. Khalil and has been published by LAP Lambert Academic Publishing this book supported file pdf, txt, epub, kindle and other format this book has been release on 2015-03-19 with categories.
Data compression is one of the important topics in computer science that is concerned in reducing the size of data. There are many techniques for data compression used for specific type(s) of data and some other used for general purpose. In this research, the RGB image has been transformed into YIQ color transform, then the I&Q band have been sampled down in order to get effective compression. To break the long encoding time of FIC, many enhanced methods are applied to traditional FIC based on using zero-mean method, in which a mean of range block is used instead of offset parameter which simplify and speed up the encoding time; Also reduce a domain pool by filtration a domain pool from those block with high entropy value, in addition to discard domain blocks which have some distance ratio from matching process. Another speeding up technique is proposed in this research based on suggesting symmetry predictor to reduce isometric trails from 8 to 1 trail. The work proves to have a good result in compression ratio and quality of reconstructed image.
Speeding Up Fractal Image Compression
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Author : Nevart A. Yousif
language : en
Publisher: LAP Lambert Academic Publishing
Release Date : 2012
Speeding Up Fractal Image Compression written by Nevart A. Yousif and has been published by LAP Lambert Academic Publishing this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012 with categories.
Fractal image compression (FIC) is one of the most recent image compression techniques. It offers a high compression ratio with extremely short decompression time. However, it suffered from long compression time. In this book, an improved PIFS scheme is introduced which uses two discrete cosine transform (DCT) descriptors to classify the zero-mean range-domain blocks and to address the isometric state of each block to reduce encoding time while while maintaining reasonable image quality. This book, therefore, provides a great success in fractal compression field of the colored images and should be useful to professionals in image processing field and data communication.
Proceedings Of The National Seminar On Applied Systems Engineering And Soft Computing
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Author :
language : en
Publisher: Allied Publishers
Release Date : 2000
Proceedings Of The National Seminar On Applied Systems Engineering And Soft Computing written by and has been published by Allied Publishers this book supported file pdf, txt, epub, kindle and other format this book has been release on 2000 with Soft computing categories.
Intelligent Fractal Based Image Analysis
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Author : Soumya Ranjan Nayak
language : en
Publisher: Elsevier
Release Date : 2024-06-14
Intelligent Fractal Based Image Analysis written by Soumya Ranjan Nayak and has been published by Elsevier this book supported file pdf, txt, epub, kindle and other format this book has been release on 2024-06-14 with Computers categories.
Fractals are infinite, complex patterns used in modeling physical and dynamic systems. Fractal theory research has increased across different fields of applications including engineering science, health science, and social science. Recent literature shows the vital role fractals play in digital image analysis, specifically in biomedical image processing. Fractal graphics is an interdisciplinary field that deals with how computers can be used to gain high-level understanding from digital images. Integrating artificial intelligence with fractal characteristics has resulted in new interdisciplinary research in the fields of pattern recognition and image processing analysis. Intelligent Fractal-Based Image Analysis: Application in Pattern Recognition and Machine Vision provides insights into the current strengths and weaknesses of different applications as well as research findings on fractal graphics in engineering and science applications. The book aims to improve the exchange of ideas and coherence between various core computing methods and highlight the relevance of related application areas for advanced as well as novice-user application. The book presents an in-depth look at core concepts, methodological aspects, and advanced feature opportunities, focusing on major real time applications in engineering science and health science. The book will appeal to researchers, data scientists, industry professionals, and graduate students in the fields of fractal graphics and its related applications. Investigates advanced fractal theories spanning neural networks, fuzzy logic, machine learning, deep learning, and hybrid intelligent systems in solving pattern recognition problems Explores the application of fractal theories to a wide range of medical image processing modalities Presents case studies that illustrate the application and integration of fractal theories into intelligent computing in the resolution of important pattern recognition and machine vision problems