In the analysis of the objects in images it is essential that we can distinguish between the objects of interest and "the rest." This latter group is also referred to as the background. The techniques that are used to find the objects of interest are usually referred to as segmentation techniques - segmenting the foreground from background. This book is a chapter of my handbook reference Digital Image Processing which was published in 2001, however, this book has a great references and recent published papers about image segmentation and edge detection using Kayyali Operator. I hope you will find this book useful for your research.