In Parts I and II of this book, we learnt the essential image processing and GIS techniques. Here we will demonstrate, step by step, with examples, how these techniques can be used effectively in remote sensing applications. Although many case studies are drawn from our own research projects on earth science and the terrestrial environment, it is important to stress the generic sense of these examples in terms of concept and methodology for wider applications. From this viewpoint, our aim is not to provide rigid recipes for fixed problems but to provide guidance on ‘how to think’ and ‘how to approach’. When first presented with a new project, beginners and students may feel a little lost, rather as in the Chinese saying the tiger wants to eat the sky but doesn’t know where to bite. We will be satisfied if this part serves as a catalyst to get you on the right track for your own remote sensing application project.
