This book represents the first serious attempt to bring together all major uses of information theory in the visualization literature up to now. We, the authors of this book, started this journey in the autumn of 2014 with our individual branches of knowledge about the existing works. By the end of summer 2015, when the first draft was compiled from separately written chapters, we were astonished by the coverage and diversity of the footprints of information theory in the landscape of visualization. We hope that readers of this work will share our enthusiasm and confidence about the promising role of information theory in visualization. While information theory has provided volume visualization, flow visualization, and information with a variety of techniques, it has also shown its potential to underpin the theoretical foundation of visualization. Of course, we are fully aware that this is only the beginning. We therefore hope that this book will inspire a surge of new effort in furthering advancement in this endeavour.
