In the field of image processing, the shape and the boundary are key descriptors to define and analyze objects. This book provides a clear, comprehensive and up-to-date introduction to objects boundary representation and description. Thus, illustrative approaches and their advantages and disadvantages are represented in this book. Moreover, the most important boundary processing and analyzing techniques beginning from filtering and geometric transformation to curvature and corner detection are discussed. This book will help the reader to understand the difference between boundary representation and boundary description. Therefore, it guides the researcher to select the best boundary representation and descriptive approaches to be applied for different applications in the field of smart computer vision systems.