Your textbook does an excellent job of describing various change detection methods. As with feature extraction there are change detection techniques that operate at the pixel level, and others that operate at the object level. The videos below provide examples of two different approaches to change detection, one using a pixel-baed approach, and another using an object-based approach. There is no single optimal approach to change detection, with the most successful change detection project often employing a combination of techniques. As with any remote sensing project, mapping change requires that you have a comprehensive understanding of your data, and that you develop a comprehensive remote sensing workflow.