This compendium provides a hands-on description of random forests. The text starts with a consistent introduction of general methods to create, train, and fuse ensembles of decision trees. Instead of limiting the explanation to the general-purpose layout of traditional random forests, this book outlines specifications during tree creation and training, that are especially well suited to analyze structured data such as images. The theoretical foundations are explained as deeply as practical and implementation issues. The many possible variations of the underlying Random Forest model are discussed as well as their implications on the outcome in order to provide insights into the influence of these parameters and their possible side-effects. Last but not least, this unique title provides specific examples of the usage of Random Forests for analysis tasks of remote sensing imagery.