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Über dieses Buch

Document imaging is a new discipline in applied computer science. It is building bridges between computer graphics, the world of prepress and press, and the areas of color vision and color reproduction. The focus of this book is of special relevance to people learning how to utilize and integrate such available technology as digital printing or short run color, how to make use of CIM techniques for print products, and how to evaluate related technologies that will become relevant in the next few years. This book is the first to give a comprehensive overview of document imaging, the areas involved, and how they relate. For readers with a background in computer graphics it gives insight into all problems related to putting information in print, a field only very thinly covered in textbooks on computer graphics.

Inhaltsverzeichnis

Frontmatter

1. Preface

Abstract
This book was written while heading the department Document Imaging at the Fraunhofer Institute for Computer Graphics in Darmstadt/Germany. It developed under the pressure that introducing new personnel to the field is a rather time-consuming task. Most co-workers coming from the university had good background in one of the related areas; however, the communication across the fields always was difficult. The author expects that this task can be significantly simplified by using this book.
Jürgen Schönhut

2. Introduction

Abstract
Document Imaging as used in this book deals with the process of mapping of electronic information to an output device; this includes all technologies involved with this process. An important component of Document Imaging is Raster Image Processing, a term used mostly in prepress context meaning processing some page to the point when it can be reproduced in a conventional printing process. With the advent of Electronic Publishing (EP) Raster Image Processors (RIPs) have become a key component in the electronic processing of documents for printing and viewing, and thus in Document Imaging. Since the introduction of PostScript more than a Decade ago, and after long discussions whether it can fulfil the quality requirements of professional printing, this Page Description Language (PDL) has become one of the most important components in RIPs of today. Therefore a large portion of this work will center discussion around the conceptual framework of PDLs, PostScript in particular, and show the integrative functionality of RIPs today.
Jürgen Schönhut

3. Color Phenomena in Display and Printing

Abstract
With the advent of so many different color output devices color has become a key issue both for display and printing. Given the brilliant colors available on display monitors the request for equivalent capability in printing has become more prevalent, but probably not achievable. Matching color across devices is a requirement that is not easy to fulfil. In order to understand the issues involved we will discuss in the following sections the phenomena related to color and help understand the problems and possible solutions.
Jürgen Schönhut

4. Fully Digital Workflow for CIM for Print

Abstract
Discussion about computer integrated manufacturing (CIM) for print products requires talking about a fully digital workflow. Traditional methods like cut and paste on a light table are no longer appropriate for CIM for print. This means that the complete process chain must be digital, from the creative systems to the final bound and trimmed brochure. The following steps are involved in a digital process chain for workflow. In all these steps we also discuss the kind of formats that are used as import or as export (where applicable).
Jürgen Schönhut

5. Formats

Abstract
This chapter deals with various formats found in document applications. We are not discussing internal product formats but rather only formats that can be exchanged, be integrated, or be used as input to a document imaging process. This is merely because there are so many internal formats that will be of use only in very restricted environments. We rather see the multiplicity of interchange formats that is prevalent today. Typically there are different tools for different kinds of tasks, and these different tools tend to generate different output formats. Some of these formats are discussed in the following chapter. The ordering of formats is not to be understood as priorization or value of a format In this chapter we will discuss mainly page description languages,namely PostScript and related formats; TIFF is another format that is covered; besides these two groups, some other formats are dealt with more briefly.
Jürgen Schönhut

6. Problem Areas

Abstract
Believing advertisements, problem areas are non-existent. Real life experience shows that there are still a few problems left to be dealt with. We would like to mention here mainly two areas of concern: color, and fonts. We will discuss both of them briefly to get an idea about the nature of the problems observed.
Jürgen Schönhut

7. The Integration Problem

Abstract
In the following sections we will discuss possible solutions to the need for integrating various formats into one document, maybe even on one single page.
Jürgen Schönhut

8. Information Interchange for the Production

Abstract
Interchanging information for document production is a critical area. Mechanisms for interchange of information must fulfil certain criteria in order to be useful:
  • the mechanism must guarantee the integrity of the information
  • it must guarantee the consistency of the information;
  • it must guarantee the completeness of the interchanged information;
  • in shall ensure that the information is self-contained;
  • it must ensure that the information has no side effects;
  • it must ensure that there is no (or at least no unacceptable) loss of information.
Jürgen Schönhut

9. Outlook: From Printing to Cross Media Publishing

Abstract
Printing will not go out of business for the foreseeable future. Other media however are pressing into the market of information and communication. Today preparation of material for single media is the rule; this will change over the next few years.
Jürgen Schönhut

Backmatter

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