This book contains seven chapters encircles comprehensive study on unsupervised change detection from remote sensing images for research scholar .Change detection (CD) is a very important topic in remote sensing for observing the earth .Change detection can be performed by two methods namely supervised and unsupervised Classification.We hope that the book will certainly adequate and systematic knowledge to the readers .Any suggestions to the improvement of this book will be highly appreciated.

Priyanka Khandelwal is an Assistant Professor in Deptt. of Electronics & Communication,Quantum School of Technology,Uttrakhand,India.She holds B.Tech and M.tech degree in Electronics.She has authored a number of research papers in the area of image processing.