English

External Labeling Techniques: A Taxonomy and Survey

Computational Geometry 2019-06-25 v2

Abstract

External labeling is frequently used for annotating features in graphical displays and visualizations, such as technical illustrations, anatomical drawings, or maps, with textual information. Such a labeling connects features within an illustration by thin leader lines with their labels, which are placed in the empty space surrounding the image. Over the last twenty years, a large body of literature in diverse areas of computer science has been published that investigates many different aspects, models, and algorithms for automatically placing external labels for a given set of features. This state-of-the-art report introduces a first unified taxonomy for categorizing the different results in the literature and then presents a comprehensive survey of the state of the art, a sketch of the most relevant algorithmic techniques for external labeling algorithms, as well as a list of open research challenges in this multidisciplinary research field.

Keywords

Cite

@article{arxiv.1902.01454,
  title  = {External Labeling Techniques: A Taxonomy and Survey},
  author = {Michael A. Bekos and Benjamin Niedermann and Martin Nöllenburg},
  journal= {arXiv preprint arXiv:1902.01454},
  year   = {2019}
}
R2 v1 2026-06-23T07:31:59.022Z