Subband Compression of Images: Principles and Examples (eBook)
378 Seiten
Elsevier Science (Verlag)
978-0-08-055085-5 (ISBN)
Advances in Image Communication, which documents the rapid advancements of recent years in image communication technologies, this volume provides a comprehensive exploration of subband coding.
Originally, subband coding and transform coding were developed separately. The former, however, benefitted considerably from the earlier evolution of transform coding theory and practice. Retaining their own terminology and views, the two methods are closely related and this book indeed aims to unify the approaches. Specifically, the volume contributes effectively to the understanding of frequency domain coding techniques. Many images from coding experiments are presented, enabling the reader to consider the properties of different coders.
Chapter 1 introduces the problem of image compression in general terms. Sampling of images and other fundamental concepts, such as entropy and the rate distortion function, are briefly reviewed. The idea of viewing coding techniques as series expansions is also introduced. The second chapter presents signal decomposition and the conditions for perfect reconstruction from minimum representations. Chapter 3 deals with filter bank structures, primarily those displaying the perfect reconstruction property. Quantization techniques and the efficient exploitation of the bit resources are discussed from a theoretical perspective in Chapter 4 and this issue is further examined in Chapter 6, from a more practical point of view. Chapter 5 provides a development of gain formulas, i.e. quantitative measures of the performance of filter banks in a subband coding context, and these are then employed in a search for optimal filter banks. A number of examples of coded images using different subband coders are presented in Chapter 7, these indicating that subband coders give rise to some characteristic types of image degradations. Accordingly, Chapter 8 presents several techniques for minimizing these artifacts. The theory and practice of subband coding of video, at several target bit rates, is discussed in the last chapter.
Sixth in the book series, Advances in Image Communication, which documents the rapid advancements of recent years in image communication technologies, this volume provides a comprehensive exploration of subband coding.Originally, subband coding and transform coding were developed separately. The former, however, benefitted considerably from the earlier evolution of transform coding theory and practice. Retaining their own terminology and views, the two methods are closely related and this book indeed aims to unify the approaches. Specifically, the volume contributes effectively to the understanding of frequency domain coding techniques. Many images from coding experiments are presented, enabling the reader to consider the properties of different coders.Chapter 1 introduces the problem of image compression in general terms. Sampling of images and other fundamental concepts, such as entropy and the rate distortion function, are briefly reviewed. The idea of viewing coding techniques as series expansions is also introduced. The second chapter presents signal decomposition and the conditions for perfect reconstruction from minimum representations. Chapter 3 deals with filter bank structures, primarily those displaying the perfect reconstruction property. Quantization techniques and the efficient exploitation of the bit resources are discussed from a theoretical perspective in Chapter 4 and this issue is further examined in Chapter 6, from a more practical point of view. Chapter 5 provides a development of gain formulas, i.e. quantitative measures of the performance of filter banks in a subband coding context, and these are then employed in a search for optimal filter banks. A number of examples of coded images using different subband coders are presented in Chapter 7, these indicating that subband coders give rise to some characteristic types of image degradations. Accordingly, Chapter 8 presents several techniques for minimizing these artifacts. The theory and practice of subband coding of video, at several target bit rates, is discussed in the last chapter.
Cover 1
Contents 14
Preface 8
Chapter 1. Introduction 18
1.1 Image Digitization 20
1.2 Image Compressibility 21
1.3 Practical Approaches to the Coding Problem 28
Chapter 2. Exact Signal Decomposition 40
2.1 Series Expansion: Block Transforms 40
2.2 Series Expansion: Multirate Filter Banks 43
2.3 The PR Conditions and Biorthogonality 52
2.4 Extension of Finite Length Signals 54
2.5 A Design Method for FIR Filter Banks 59
2.6 Summary 64
Chapter 3. Filter Bank Structures 66
3.1 z-Domain Notation 68
3.2 z-Domain PR Filter Bank Conditions 69
3.3 Polyphase Filter Bank Structures 73
3.4 Two-Channel Filter Banks 80
3.5 Tree Structured Filter Banks 115
3.6 Parallel Filter Banks 116
3.7 Summary 141
Chapter 4. Bit Efficient Quantization 144
4.1 Scalar Quantization 144
4.2 Vector Quantization 152
4.3 Scalar Quantization and Mixture Distributions 156
4.4 Summary 169
Chapter 5. Gain-Optimized Subband Coders 172
5.1 Gain in Subband Coders 173
5.2 Reformulation of the Optimal Subband System 194
5.3 System Quantizer replaced by DPCM Coder 196
5.4 Lapped Orthogonal Transforms (LOTs) 199
5.5 Summary 201
Chapter 6. Classical Subband Coding 204
6.1 Subband Statistics 205
6.2 Scalar Image Subband Quantization 212
6.3 Extension to Color Images 219
6.4 Summary 220
Chapter 7. Coding Examples and Comparisons 222
7.1 Blurring Distortion 224
7.2 Ringing Noise 226
7.3 Blocking Distortion 227
7.4 Comparing Circular and Mirror Extension 227
Chapter 8. Remedies for Coding Artifacts 234
8.1 Classification of Image Defects 236
8.2 FIR Filter Banks for Robust Coding 243
8.3 Subband Coding with Adaptive Filter Banks 270
8.4 Dynamic Entropy Coding 284
8.5 Summary 287
Chapter 9. Subband Coding of Video 290
9.1 Introduction 290
9.2 Approaches to Coding of Digital Video 291
9.3 Low-to-medium Rate Coding 304
9.4 Medium-to-high Rate Coding 329
9.5 Summary 352
Appendix A. Some Digital Signal Processing Facts 354
A.1 Allpass Filters 354
A.2 Anticausal Filtering 356
A.3 Multirate Digital Signal Processing 356
Appendix B. The Heisenberg Uncertainty Relation 364
Appendix C. Filter Coefficients 368
C.1 Johnston Filters 368
C.2 Two-Channel Filter Banks based on Allpass Filters 368
C.3 Parallel Filter Banks based on Allpass Filters 370
C.4 Parallel FIR Filter Banks 370
Appendix D. Original Images 374
Bibliography 378
Index 394
Erscheint lt. Verlag | 18.7.1995 |
---|---|
Sprache | englisch |
Themenwelt | Informatik ► Grafik / Design ► Digitale Bildverarbeitung |
Technik ► Elektrotechnik / Energietechnik | |
Technik ► Nachrichtentechnik | |
ISBN-10 | 0-08-055085-1 / 0080550851 |
ISBN-13 | 978-0-08-055085-5 / 9780080550855 |
Haben Sie eine Frage zum Produkt? |
![PDF](/img/icon_pdf_big.jpg)
Größe: 14,8 MB
Kopierschutz: Adobe-DRM
Adobe-DRM ist ein Kopierschutz, der das eBook vor Mißbrauch schützen soll. Dabei wird das eBook bereits beim Download auf Ihre persönliche Adobe-ID autorisiert. Lesen können Sie das eBook dann nur auf den Geräten, welche ebenfalls auf Ihre Adobe-ID registriert sind.
Details zum Adobe-DRM
Dateiformat: PDF (Portable Document Format)
Mit einem festen Seitenlayout eignet sich die PDF besonders für Fachbücher mit Spalten, Tabellen und Abbildungen. Eine PDF kann auf fast allen Geräten angezeigt werden, ist aber für kleine Displays (Smartphone, eReader) nur eingeschränkt geeignet.
Systemvoraussetzungen:
PC/Mac: Mit einem PC oder Mac können Sie dieses eBook lesen. Sie benötigen eine
eReader: Dieses eBook kann mit (fast) allen eBook-Readern gelesen werden. Mit dem amazon-Kindle ist es aber nicht kompatibel.
Smartphone/Tablet: Egal ob Apple oder Android, dieses eBook können Sie lesen. Sie benötigen eine
Geräteliste und zusätzliche Hinweise
Buying eBooks from abroad
For tax law reasons we can sell eBooks just within Germany and Switzerland. Regrettably we cannot fulfill eBook-orders from other countries.
aus dem Bereich