Title External labeling : fundamental concepts and algorithmic techniques / Michael A. Bekos, Benjamin Niedermann, Martin Nöllenburg

Published [San Rafael, California] : Morgan & Claypool Publishers, [2021]

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Description 1 online resource (xv, 114 pages) : illustrations (some color) Series Synthesis lectures on visualization, 2159-5178 ; #13 Synthesis lectures on visualization ; #13. Contents 1. Introduction -- 1.1. External labeling in applications -- 1.2. Book structure -- 1.3. How to read this book 2. A unified taxonomy -- 2.1. Terminology and concepts -- 2.2. Distinctive features -- 2.3. Optimization problem 3. Visual aspects of external labeling -- 3.1. Style -- 3.2. Placement -- 3.3. Empirical studies 4. Labeling techniques -- 4.1. Non-exact algorithms -- 4.2. Exact algorithms -- 4.3. Complexity results -- 4.4. Guidelines 5. External labelings with straight-line leaders. -- 5.1. Overview -- 5.2. Detailed discussion -- 5.3. Guidelines 6. External labelings with polyline leaders -- 6.1. Overview -- 6.2. Detailed discussion -- 6.3. Curved leaders -- 6.4. Guidelines -- 7. Conclusions and outlook Summary This book focuses on techniques for automating the procedure of creating external labelings, also known as callout labelings. In this labeling type, the features within an illustration are connected by thin leader lines (called leaders) with their labels, which are placed in the empty space surrounding the image. In general, textual labels describing graphical features in maps, technical illustrations (such as assembly instructions or cutaway illustrations), or anatomy drawings are an important aspect of visualization that convey information on the objects of the visualization and help the reader understand what is being displayed. Most labeling techniques can be classified into two main categories depending on the "distance" of the labels to their associated features. Internal labels are placed inside or in the direct neighborhood of features, while external labels, which form the topic of this book, are placed in the margins outside the illustration, where they do not occlude the illustration itself. Both approaches form well-studied topics in diverse areas of computer science with several important milestones. The goal of this book is twofold. The first is to serve as an entry point for the interested reader who wants to get familiar with the basic concepts of external labeling, as it introduces a unified and extensible taxonomy of labeling models suitable for a wide range of applications. The second is to serve as a point of reference for more experienced people in the field, as it brings forth a comprehensive overview of a wide range of approaches to produce external labelings that are efficient either in terms of different algorithmic optimization criteria or in terms of their usability in specific application domains. The book mostly concentrates on algorithmic aspects of external labeling, but it also presents various visual aspects that affect the aesthetic quality and usability of external labeling Analysis external labeling boundary contour excentric static dynamic points features leaders labels callouts taxonomy quality metrics optimization algorithmic techniques Bibliography Includes bibliographical references (pages 101-110) and index Notes Title from PDF title page (viewed on August 4, 2021) Subject Information visualization. Graphic design (Typography) -- Data processing Charts, diagrams, etc. -- Data processing Mathematical optimization. Graphic design (Typography) -- Data processing Information visualization Mathematical optimization Form Electronic book Author Niedermann, Benjamin, author Nöllenburg, Martin, author ISBN 9781636392059 1636392059

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