"The growing complexity of indoor living environments requires a seamless indoor and outdoor navigation. This book presents the current research on space-based navigation models and the contents of spaces used for seamless navigation. It elaborates on 3D spaces reconstructed automatically and how indoor, semi-indoor, semi-outdoor, and outdoor spaces can mimic the indoor environments and originate a network based on the 3D connectivity of spaces. The case studies included help readers understand theories, approaches, and models, including data preparation, space classification and reconstruction, space selection, unified space-based navigation model derivation, path planning, and comparison of results"--