1st Edition

Control of Color Imaging Systems Analysis and Design

By Lalit K. Mestha, Sohail A. Dianat Copyright 2009
    696 Pages 48 Color & 430 B/W Illustrations
    by CRC Press

    696 Pages 48 Color & 430 B/W Illustrations
    by CRC Press

    696 Pages 48 Color & 430 B/W Illustrations
    by CRC Press

    A Complete One-Stop Resource

    While digital color is now the technology of choice for printers, the knowledge required to address the quality and productivity issues of these devices is scattered across several technologies, as is its supporting literature.

    Bringing together information from diverse fields, Control of Color Imaging Systems: Analysis and Design is the first book to provide comprehensive coverage of the fundamentals and algorithms of the numerous disciplines associated with digital color printing in a single resource. The authors review the history of digital printing systems, explore its current status, and explain fundamental concepts, including: digital image formation, sampling, quantization, image coding, spot color calibration, and one- and multi-dimensional tone control of color management systems — including process physics and controls.

    A Complete Self-Tutorial With Over 150 Design Examples and 120 Exercise Problems

    Based on the authors’ three decades of hands-on technical and teaching experience, the text provides engineers and technicians with an end-to-end understanding of the color printing process, and helps them build a foundation drawn from the diverse disciplines needed to manage and control digital production printers.

    The control theory and methods presented in this book are state-of-the art for color printing systems; however, coverage of theoretical concepts and mathematics are kept to the basics, as the book is designed to teach hand’s on skills that will allow practitioners to gain an immediate understanding of quality and productivity concerns. The understanding provided will help practitioners build the technical skills needed to help pioneer the next generation of ideas, algorithms, and methods that will further expand the frontier of this rapidly evolving technology.

    Preface

    Acknowledgments

    An Overview of Digital Printing Systems

    Introduction

    Printing and Publishing System

    Digital Front End

    Digital Print Engine (Electrophotographic)

    Evolution of Controls Technology for Digital

    Printers—Color Controls View

    Prepress-Based Processing

    DFE-Based Processing

    Print Engine-Based Processing

    References

    Fundamentals of Digital Image Processing

    Introduction

    Digital Image Formation and Systems

    Optical and Modulation Transfer Functions

    Image Sampling and Quantization

    Image Transform

    Image Filtering

    Image Resizing

    Image Enhancement

    Image Restoration

    Image Halftoning

    Problems

    References

    Mathematical Foundations

    Introduction

    General Continuous-Time System Description

    Laplace Transform

    General Linear Discrete-Time Systems

    z-Transform

    Discrete-Time Fourier Transform

    Two-Dimensional z-Transform

    Two-Dimensional Discrete-Space Fourier Transform

    Eigenvalues and Eigenvectors

    Singular Value Decomposition

    Matrix Polynomials and Functions of Square Matrices

    Fundamentals of Matrix Calculus

    Problems

    References

    State-Variable Representation

    Introduction

    Concept of States

    State-Space Representation of Continuous-Time Systems

    State-Space Representation of General Continuous LTI Systems

    Solution of LTI Continuous-Time State Equations

    State-Space Representation of Discrete-Time Systems

    State-Space Representation of Discrete-Time LTI Systems

    Solution of LTI Discrete-Time State Equations

    Controllability of LTI Systems

    Observability of LTI Systems

    Problems

    References

    Closed-Loop System Analysis and Design

    Introduction

    State Feedback

    LQR Design

    State Estimators (Observers) Design

    Combined State Estimation and Control

    Problems

    References

    Interpolation of Multidimensional Functions

    Introduction

    Interpolation of Uniformly Spaced Lookup Tables

    Nonuniformly Spaced Lookup Tables

    Lookup Table Inverse

    Compression of Lookup Tables

    Smoothing Algorithm for Multidimensional Functions

    Problems

    References

    Three-Dimensional Control of Color Management Systems

    Introduction

    Image Path Architecture

    Profiling—A Complex System Problem

    Characterization of Color Systems

    GCR Selection and Inversion

    Gamut-Mapping Methods

    Evaluation of Profiles

    An Example Showing How to Build Multidimensional LUT

    Problems

    References

    One-Dimensional, Two-Dimensional, and Spot-Color Management and Control Methods

    Introduction

    Principles of Color Management

    One-Dimensional Gray-Balance Calibration

    Two-Dimensional Calibration

    One-Dimensional and Two-Dimensional Printer Calibration

    Using Printer Models

    One-Dimensional and Two-Dimensional Printer Calibration with State-Feedback Methods

    Spot-Color Control

    Problems

    References

    Internal Process Controls

    Introduction

    Process Control Models—A General Control View

    Time Hierarchical Process Control Loops

    Level 1 Electrostatic Control System

    State Space to Transfer Function Conversions

    Level 2 Developability Controller

    Steady-State Error

    Design of the Gain Matrix

    Level 3 Control Loops

    Dead Beat Response

    TC Control Loop

    Process Controls Under Limited Actuation

    Optimal Controls for Selective States

    Optimal Measurements

    Problems

    References

    Printing System Models

    Introduction

    Process Models

    Modulation Transfer Functions

    Tone Reproduction Curve

    Image Simulation with Fusing and Color Models

    Virtual Printer Color Gamut

    Virtual Printer Model Tuning to an Experimental Printer

    Problems

    References

    Appendices (A-C)

    Index

    Biography

    Mestha, Lalit K.; Dianat, Sohail A.

    "... brings together the technical fields of imaging systems and feedback control systems in a self-contained manner. ... an excellent addition to the literature on the analysis and design of color-imaging systems. It should be recommended to anyone who wants to become familiar with state-of-the-art techniques in these areas."
    -- Daniel Viassolo, Vestas Technology R&D, Power Plant Department, Houston, Texas